Mercedes Sprinter is the most famous commercial vehicle in the world. On its basis, most of the various models of cargo and cargo-passenger vehicles, vans, as well as on-board platforms have been developed. However, all the modifications presented are united by one significant drawback - the leaf spring suspension, which does not always cope with the maximum loads of the car when a heavy load is applied to the rear axle. To solve the problem and keep the vehicle working properly, we recommend installing a rear air suspension on a Mercedes-Benz Sprinter. Our company presents you with a wide selection of pneumatic elements for the Mercedes-Benz Sprinter suspension directly from the manufacturer, which allows you to set the lowest possible price for the entire range of products.
The main purpose of the systems presented in the catalog is to increase the ability of the car to work with the maximum permissible load, reduce the vibrations of the car on uneven roads, and also make the movement comfortable and safe for the driver, passengers or cargo. In addition, with the help of the pneumatic system, you can slightly increase the ground clearance, which is very convenient off-road.
What give air bags installed in the springs for a Mercedes?
Eliminate suspension breakdown, vehicle roll, increase comfort and energy intensity, the suspension becomes assembled and quiet. With air springs in the springs, you can adjust the ground clearance and suspension stiffness, the car will not sag when fully loaded. The effect is especially noticeable if you use them on a bad road (gravel, pits, bumps, potholes, dirt roads, asphalt waves, railway crossings, etc.). Also, if the wheel rubs against the arches, then you can get rid of it by using air springs in the springs.
BlackStone air bellows are suitable for vehicles where the shock absorber is separate from the spring. The ✔ sign means that the shock absorber is installed separately from the spring and installation is possible, with the ✘ sign - cars with a MacPherson strut are marked, or where it is structurally impossible to install air bags. Sign ✐ - there is an installation manual / photo. To go to the instructions, you must click on the icon itself. The catalog does not give one hundred percent guarantee that the pneumatic element will fit your car, since there are structural differences in the model's configurations or their modifications.
C230 ✔ BlackStone ME air bellows
C280 ✔
C350 ✔
C55 ✔
CL500 ✘
CL55 ✘
CL600 ✘
CL65 ✘
CLK350 ✔
CLK500 ✔
CLK55 ✔
CLS500 ✔
CLS55 ✔
E320 CDI ✔ BlackStone ME air bellows
E350 ✔
E500 ✔
E55 ✔
G500 ✔
G55 ✔
GLK (204) ✔ Inner diameter - 72 mm, Height - 220 mm. Fit
ML350 ✘
ML500 ✘
R350 ✘
R500 ✘
S350 ✘
S430 ✘
S500 ✘
S55 ✘
S600 ✘
S65 ✘
SL500 ✘
SL55 ✘
SL600 ✘
SL65 ✘
SLK280 ✔
SLK350 ✔
SLK55 ✔
How to determine if a BlackStone air spring will fit if there is no information in the catalog?
It is necessary to measure the inner diameter and height of the spring in the normal state without a jack and without a load (measurements are easier to carry out in a pit):
| 1. Make sure the vehicle is on level ground with the springs under the weight of the body. | |
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2. Measure the INNER diameter of the spring. If the spring is tapered or barrel-shaped, measurements must be taken at the points of maximum and minimum diameter. |
| 3. Measure the height of the INNER space of the spring vertically without taking into account the standard buffers (bumpers) of the compression stroke - they must be dismantled. | 
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4. Check the interior for bolts, sharp objects, and bumps. If there are any, they must either be eliminated or covered with bumpers. |
| 5. If there are holes in the lower arm and / or support on the side of the body with a diameter of more than 20 mm, they must also be closed with bumpers "W" and / or "F". | 
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6. Select the most suitable pneumatic element according to the dimensions on the plate below. The free height space can always be filled with bumpers "W" and / or "F". The pneumatic element will fill the excess space in diameter when pressure is applied. |
Sizes of pneumatic bellows:
| Pneumatic elements: |
The size: |
Vendor code: |
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Height: 147 mm. (+ pump valve = 178 mm.) Diameter: 76 mm. |
295.147.76S | |
| Height: 202 mm, diameter: 88 mm. | 295.202.88M | |
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Height: 202 mm., Diameter: 88 mm. |
295.202.90MHD | |
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Height: 202 mm. (+ pump valve = 233 mm.), diameter: 88 mm. |
Have you decided to make an air suspension on a Mercedes Sprinter with your own hands? Then you should contact us, as we manufacture finished products designed for do-it-yourself installation. Of course, you can make your own air suspension on a Mercedes Sprinter by purchasing all the components separately. But for this you need to understand all the technical nuances. First of all, we are talking about a suitable diameter, height of pillows, compressor power, and so on. A simpler option would be to buy a ready-made kit, the installation of which is carried out according to the instructions. By contacting us, you can install the air suspension on a Mercedes Sprinter with your own hands using a standard set of tools.
Today, the list of air suspension cars is huge. It is used by trucks, SUVs and semi-trailers, and more recently, expensive business class cars. The list of factories that install pneuma on their machines includes Audi, Ford, Volkswagen, Citroen, Mercedes, SsangYong, Jeep, Land and Range Rover, and Maybach, Lexus, Cadillac and Rolls-Royce.
But these are factory models. Local Kulibins, appreciating the convenience of pneuma, often install it on their regular cars. In this case, the machine only wins in productivity.
What car can be fitted with air suspension
It is worth saying that the air suspension is not a separate type of suspension, but rather a subspecies. The air can be installed on an existing suspension. Therefore, there is a practice of independent modernization of the machine and the installation of an air suspension on it.
Based on the design of the air suspension, we can conclude that it can be installed on any car. As mentioned above, the essence of installing a pneumatic valve is to replace the built-in elastic elements with pneumatic bellows. Hence the conclusion: each car can be upgraded with air suspension. The only question is the price.
For motorists, there are air suspension kits that contain all the necessary components for installation. You need to choose them in accordance with the characteristics of the car and the goals of the driver. Let's say right away that the cost of such sets is high. Therefore, you can only save on installation. What is needed in order to independently install the air suspension will be discussed below.
What is needed in order to install the air suspension yourself
The Internet is filled with photo and video reports from users about installing air suspension with their own hands. Here we have collected a set of tips from pneuma installers.
First, you need to buy a ready-made air suspension kit or assemble the elements yourself. Their list includes:
Air bags, which are needed for shock absorption and will replace standard devices;
A compressor serving as an air blower in the air bags;
Receiver. It adjusts the clearance height without the involvement of the compressor;
Monitoring sensors that regulate the position of the body relative to the road and the pressure in the entire system;
Air suspension control unit, which controls the sensors and controls the entire system;
Pressure gauge to monitor the pressure in the system. Ideally, it should not exceed 8 atm.
Mounts that are best ordered from a turner. The point is that it is better to customize the installation to fit the factory mountings, rather than modify them. This will allow you to effortlessly replace the suspension with a standard suspension in the future.
Secondly, you need to follow the sequence of actions during installation. Usually, installation instructions are written on the kits, but the principle is, in general, one. First you need to put the car on jacks and remove the wheels with springs. Then act as appropriate, according to the type of system being installed. However, the installation consists of roughly similar steps:
First you need to remove the racks;
Prepare the mounts for installing the suspension;
Install air bags in the prepared mountings;
Install the racks with pillows in their places;
Air suspension and installation cost
Air suspension is not cheap. The price of a small set, which includes only cylinders, hoses and nozzles, ranges from 3000 to 4500 UAH. The suspension control system from the passenger compartment costs from 6400 to 66400 UAH. Compressors for pumping air also have a big difference in price: from 509 to 18800 UAH. Components, insulators, thermal shields and manometers will cost up to UAH 2,200. A complete factory set with all elements costs from UAH 18800 to UAH 121800. Installation of the system by masters will cost the driver an additional amount in the region of 450-900 UAH.
You can reduce the cost of installing air suspension if you buy used parts or spend a long time analyzing the market and sellers. You can also install the system yourself, without the help of specialists.
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The model range of the Mercedes family is divided into classes that unite cars with similar technical and operational indicators, functionality and comfort. They are labeled with the letters of the Latin alphabet A, C, E, M, S. Representatives of the S-class are premium cars with advanced equipment and luxury design.
About marking, abbreviation and differences from the predecessor
Mercedes is launching a premium SUV on the world market, which will be labeled as GLS, which stands for Geländewagen "SUV" (GL) and S as belonging to the class.
At the rear, the novelty differs from its predecessor only by the presence of an additional letter in the abbreviation on the trunk and almost imperceptible changes in the design of the lanterns and reflectors, as well as redesigned exhaust pipes. Let's try to figure out the qualitative changes that have introduced the all-terrain vehicle to the S-class models.
No fundamental changes were found on the front of the Mercedes-Benz GLS either. So, the air intake became more massed due to the increase in nozzles, two large stripes with an emblem on the radiator grille appeared, and the headlights were brought to corporate standards. In general, there is a positive impression and a sense of novelty, despite minor changes in the body design.
Interior
The changes in the interior of the cabin are also not impressive in scale, and most of them have already been applied in the GLE and GLE Coupe modifications. The steering wheel is statically fixed on the panel, traditionally controlled remotely using buttons, a rotary controller or a touchpad. The sensor is the most striking innovation in the interior of this model.
The interior feels luxurious and expensive compared to the previous model, but this is achieved thanks to the materials of finishing, their selection and combination. It is worth noting the presence of seven seats in the GLS: front multi-circuit seats and two rear rows with a wide passage to the gallery, which is formed when the second row seat is folded.
About technical characteristics
On a mountain road, swept by snow and covered with ice in places, the SUV confidently goes 90 km / h. Although one has to do justice to the precise operation of the electronics. Without her help, the "five hundredth" would have been lying somewhere in the gorge.
On dry roads, the GLS 500 delivers such boundless power, absolute cornering stability and lightning-fast acceleration when overtaking, that doubts have crept into the GLS 350d's balance. But this is a purely subjective opinion and for most life circumstances a diesel engine will be quite enough.
About the engine
Under the hood of the "five hundred" is a turbocharged eight-cylinder V-shaped engine with a volume of 4.7 liters and a capacity of 455 liters. with. This petrol unit generates 700 Nm of torque and can accelerate from 0 to 100 km / h in 5.3 seconds.
Considering that the changes were carried out, to put it mildly, partial, and the results were impressive, then the Mercedes-Benz engineers coped with the task. And although the GLS falls short of the S-class car in the traditional sense, it can be safely considered as such among large SUVs.
It shouldn't be surprising if it is chosen as the benchmark after benchmarking against its closest rivals. And it will certainly be with the GLS, designed from start to finish as an S-Class.
Technical features
Mercedes GLS in comparison with the previous model has lost about a centner in weight. This was achieved by means of pneumatic attachment levers, hood and front fenders, which are made of aluminum. A new lightweight windshield was also installed, the front amplifier was replaced with a similar magnesium-based alloy, and plastic was used to make the front engine mount.
The six-cylinder diesel unit has a new fuel management system that regulates the amount of mixture per cylinder individually and an exhaust gas recovery system. This allows you to save diesel fuel and reduce environmental pollution.
The nine-band 9G-Tronic transmission was first installed on the E-Class in 2013. It has six direct gears, and the other three are overdrive. The gear ratio is 9.3: 1, and the previous 7G-Tronic automatic transmission was 6.02: 1, with five direct gears and two overdrive gears. The economic effect of the modernization was the reduction in fuel consumption. It was about 7% on average.
Additionally, the GLS can be fitted with headlights with LED illumination and high beam adaptation. The functionality provides for the ability to dynamically change the shape and diffusion of the light beam, as well as the ability to rotate to increase the illumination area behind the obstacle.
The system detects the number of oncoming traffic and either turns off the main beam, or limits its propagation by mechanical shutters. The sensors are highly sensitive, so adaptation takes place even in the event of a sudden appearance of the car due to the turn.
How it all began
Many connoisseurs and experts believed that the new Mercedes GL would be the successor to the popular Gelendvagen all-terrain vehicle, created in the best traditions of military technology. But the 2006 show in Detroit showed that the developers had created a completely new model, which marked the beginning of a new line of large cars of the Mercedes brand.
The design of the novelty caused an ambiguous impression, since the elongated body seemed narrower and the owners often installed expanders on the arches, provided in the optional configuration.
The extended bed of the Mercedes ML formed the basis of the GL version, increasing the geometric dimensions. Thus, the wheelbase increased to 3075 mm (plus 160 mm), and the body length as a whole reached 5088 mm (plus 308 mm). The crossover was equipped with independent air suspension and a wide range of power units.
Six and eight-cylinder diesel engines were produced in the GL 320 CDI and GL 420 CDI models with a volume of 3 and 4 liters, respectively, as well as gasoline eight-cylinder engines with a volume of 4.7 and 5.5 liters in the GL 450 and GL 500 models. All modifications were equipped with a seven-band automatic transmission 7G -Tronic.
Three years later, the first modernization of the "Ji-elki" took place, affecting mainly the appearance, headlights and interior design. The engines and chassis were not changed.
A full-scale modernization was carried out in 2012. The updated Mercedes GL lightened by 100 kg, but at the same time it added in size and roominess. The engines have been enhanced with power while also making them more economical. In diesel units, a urea injection system was used in the exhaust manifold, which showed high efficiency in neutralizing nitrogen oxides in the exhaust gas.
Serial production of this model has been taking place in Tuscalus (USA) for many years, and the American market is the main consumer of the GL series. Among European countries, British motorists can be considered fans of Mercedes GL.
What to do when the car starts to roll over?
Here are some simple and very effective ways to check the rack without contacting a specialized service.
Let's start in order and go through all the shock absorber models for cars
Mercedes-Benz.
W220 Front shock absorbers.
The first sign that a repair kit is required is cracks in the fill on the top of the air suspension strut, where the air supply valve is located.
If your car began to spontaneously lower on one of the front wheels, then to identify the malfunction, it is enough to start the car (for the compressor to start working).
When the compressor starts up and pumps up the racks to a normal level, you need to open the hood and spray soapy water into the recess (cup with filling), where the air supply tube is supplied.
If the soap solution shows air bubbles, you need to eliminate the defect by installing an upper repair kit.
This method is relevant when the car crashes in a few hours or over a whole night.
Airmatic shock absorbers: W220, W211, W219, W221
In some cases, when the car leans on one of the struts in a short period of time, say an hour or two (or on the move).
In such a situation, it is likely that the air spring in the strut has a rupture.
It is quite easy to verify this.
If the car's compressor is still capable of pumping such a rack, then to identify it, you need to do the following procedure:
1) Start the car. For the compressor to inflate the rack to the standard position.
2) Switch off the car. To make it easier to hear and not interfere with the sound of a running engine.
3) Substitute a jack and hang out the wheel with the shock absorber that relieves pressure. It is enough to lift the wheel to simply lift off the ground.
4) Listen carefully. When the rolling air spring (installed on all models of Mercedes shock absorbers) begins to straighten and reaches the point of rupture, due to the suspension of the wheel, a hissing sound will be heard (as with a breakdown of a wheel).
It will be clearly audible if you look into the wheel arch.
This diagnostic method is relevant for the following shock absorber models (front and rear):
W220, W211, W219, W221.
If, after the described actions, the sound of air coming out of the air spring is not heard, then you should look for a malfunction in other weak points of the Airmatic system.
Possible options:
1) Faulty valve rack.
2) Malfunction of the height level sensors. In front for each wheel, behind one for the entire axle.
3) In rare cases, the system may not be tight.
Connections in places where air pipes are screwed into the struts and into the valve rail. They are loosely tightened, or have a defect in the O-ring or thread. As a result, there is an air leak.
The Airmatic air suspension has appeared in widespread use on the Mercedes W220 as standard. As an option, it was equipped with an active hydraulic suspension ABC (code 487) on the S500 models, and the S600 came only with Active Body Control. All other models received from the factory the Airmatic air suspension, which provided both static and dynamic support with the help of four air struts. Each strut is a pneumatic cylinder and shock absorber assembled into one unit. Airmatic struts are supplied with air from an air compressor located behind the front bumper of the vehicle, near the front wheel. On the opposite side is a central reservoir that maintains pressure through the pneumatic line and valve block. The valve block is connected to a computer that monitors the pressure in the system, the weight of the vehicle, the required vehicle height, its current position (angle) and then sets the ground clearance accordingly.
Benefits of Airmatic air suspension
- High level of driving safety and driving comfort
- Adaptation of suspension stiffness to road conditions and driving style
- The center of gravity of the vehicle is lowered as the ground clearance is automatically reduced at speeds above 70 km / h
- By reducing the clearance - the aerodynamic drag of the car and fuel consumption are reduced
- Individual adaptation: increasing the vehicle's clearance on bad roads and, if necessary, moving over obstacles; two possible levels of air suspension stiffness for comfortable or sporty driving styles in cars manufactured before 08.1999; three possible levels of air suspension stiffness for comfortable, sporty and extreme driving styles on cars manufactured after 09.1999
System operation
The Airmatic's air suspension is not as advanced as the ABC, but it is responsive to changing road conditions and requires quite a lot of data to ensure proper system performance and passenger comfort.
Normal operation (engine running): when the vehicle is stationary, the level is adjusted if there is a difference between the front / rear axle heights of more than +/- 10 mm. The measurement is taken when the door or tailgate is opened.
While driving, the level is readjusted if there is a difference in axle ground clearance of more than +/- 20mm. For the rest of the driving time, the level is adjusted to +/- 10 mm every 15 minutes.
Depending on the situation, the pressure in the system is maintained by both the compressor and the pressure vessel (receiver). The compressed air from the reservoir is used only when necessary to avoid pumping air into the reservoir too often. This happens, for example, if the vehicle height falls below a critical level when the vehicle is loaded, or if the driver has switched the system to the "increased ground clearance" position. The pressure from the receiver is also used when the vehicle is stationary to minimize noise. In a standard driving situation, the air in the pneumatic struts is supplied directly from the compressor.
The decrease in vehicle clearance is recognized by the control module from the body level sensors when the vehicle is loaded. When the solenoid valves are triggered, air is supplied to the struts on the front or rear axle until your Mercedes-Benz reaches a predetermined height. In addition, the pressure relief valve opens to reduce the pressure in the strut when unloading the vehicle (unless the locking system is activated).
"Wake-up" function (Everything happens within 1 minute)
A parked car wakes up even before the engine starts. The AIRmatic control module with ADS receives signals from a door contact sensor, or a sensor on the boot lid, indicating that the driver may soon start the engine and drive the vehicle. The current vehicle level is immediately checked and corrected if necessary. Vehicle clearance on the front axle is considered critical if complete eversion of the wheels cannot be guaranteed. In this case, a message is displayed on the multifunction display in the instrument cluster to warn the driver: “Stop car too low”.
If the control module is "woken up" (for example, by opening one of the doors), then there is a period of free time before the driver starts the engine, during which the clearance of your Mercedes is adjusted. This reduces the waiting time required for level correction and prepares the vehicle for driving more quickly. The pressure in the common reservoir is used to lift the vehicle at a standstill. The compressor is used only if the receiver is empty, and the following conditions are met: if the vehicle's ground clearance is reduced by more than 30 mm, it rises to the normal level with air from the receiver (if the residual pressure in it is> 11 bar). When the vehicle's clearance falls< -65 мм и при остаточном давлении ресивера 12,4 bar, а далее – воздухом из ресивера.
If the vehicle level rises more than 10 mm during unloading, it is lowered to the normal level by reducing the pressure in the air struts.
When the ignition is on, everything is the same, but without a time limit. When the ignition is turned off, the system monitors the pressure in the receiver so that it is enough for the "wake up" mode - approximately the same was in the old W126, which pumped vacuum into the central locking manifold - when leaving the car, you heard a humming pump, which helpfully took care of vacuum until your next visit.
The operation of the Airmatic air suspension with the ADS control module can be roughly divided into the main stages:
- Receiving data from sensors for subsequent processing
- Logical data processing issuing "orders" to the system
- Safety chain
Retrieving data
The following input signals are processed by the logic component and used for calculations or to provide additional information:
- Calculation of the vertical acceleration of the body
- Receiving signals from body acceleration sensors
- Vehicle speed calculation
- Reading vehicle speed data
- Comparison of data with speed status signal
- Calculation of the longitudinal and lateral acceleration of the body
- Receiving data from wheel rotation sensor
- Receiving a signal from the steering angle sensor
- Compressor efficiency calculation
- Outdoor temperature and pressure control
- Tank pressure indicator
- Vehicle speed indicators
- Vehicle level sensor readings
- Calculation of the signal for the control valve
- Receiving a signal about the level of the rear axle
- Calculation of the required pressure in the main tank
- Receiving Body Level Signal Front Left, Front Right
- receiving signal about the level of the rear axle
- Receiving data from pressure sensors
- Vehicle level calculation
- Receiving data from level sensors
- Information signals (control)
- Data from the brake light switch
- Comfort and Sport switch signal
- Signal from the clearance regulator
- Signal from contacts in doors, trunk, remote control
Logical data processing
The incoming signals are processed in the logic component and converted to output signals.
- Signals from body acceleration sensors ( B24 / 3, B24 / 8, B24 / 9)
- Vertical body acceleration is calculated using signals from body acceleration sensors.
Front wheel speed indicators, left and right:
- Uses wheel speed readings and data from the ESP control module
- Vehicle speed
- Longitudinal acceleration
- Vehicle condition. The difference between a moving vehicle and a stationary vehicle is read.
Steering angle sensor signal ( N49):
- The vehicle's lateral acceleration is calculated using the signal from the steering angle sensor and the wheel speed signal.
Signal from level sensors ( B22 / 8, B22 / 9, B22 / 3):
- Both front axle level sensors give 2 signals. The sensors detect and transmit the distance between the center of the wheel and the vehicle body on the left and right sides of the vehicle.
- The rear axle sensors also provide 2 signals. The sensor determines and transmits the distance between the center of the wheel and the body (with the difference that the average value of the left and right wheels is calculated here).
Brake light sensor ( S9 / 1):
- When the driver presses the brake pedal, the signal is received by the coherent component and the stiffness of all struts switches to "hard", which reduces the "peck" of the car's nose when braking.
Switch to "Comfort" and "Sport" mode switch ( N72/1s3):
- Switching between Comfort and Sport air suspension mode informs the system of the driver's choice between one comfort setting and 2 sporty hardness settings. Comfort mode provides damping within a comfortable range for as long as driving style and road conditions will allow. Sport 1 mode makes the suspension slightly stiffer. Sport 2 immediately sets the shock absorbers to their maximum stiffness. The settings set by the driver are saved until they are changed by the driver (even when the ignition is turned off).
Clearance adjustment signal from switch ( N72/1s2):
- The control module uses signals from the level control switch to determine the driver's preference for vehicle level:
- Normal level
- increased ground clearance
ADS II
- The control module uses the vertical, longitudinal and lateral body acceleration and travel speed to determine the optimum level of air struts stiffness. 4 different levels of stiffness can be set for each wheel, controlled by valves located on the struts. For example, the stiffness is automatically set to sport 1 at a speed of> 160 km / h.
- Control and adjustment of clearance
- The control module uses parameters from the switch for the vehicle height selected by the driver and the vehicle speed to control the appropriate level through the control valves and sets the correct vehicle level according to the vehicle load.
- The AIRmatic air suspension is equipped with a pressure reservoir to make the level change time as short as possible (for example, to level the vehicle after loading). The compressed air from the reservoir is used only when necessary to avoid pumping air into the reservoir too often. This happens, for example, if the vehicle height falls below a critical level when the vehicle is loaded, or if the driver has switched the system to the "increased ground clearance" position. The reservoir pressure is also used when the vehicle is stationary to minimize noise. In a standard driving situation, the air in the pneumatic struts is supplied directly from the compressor.
Compressor control
The compressor is controlled via a relay. Since the compressor is not designed for continuous operation, the duration and the cooling phase are controlled to avoid overloading the compressor.
Safety chain
In Airmatic air suspension with ADS, the control module monitors all important system components after switching on and during operation. The safety circuit monitors the health of the signals from the sensors, the health of the control module, and the electrical components of the system. If a malfunction is detected, the system is disabled and a message is displayed on the multifunction display in the instrument panel to alert the driver. The valve block is no longer monitored and the air struts are switched to "hard" mode (hard level for driving safety). In addition, a malfunction code is written in the control module. The clearance control is partially disabled depending on the type of malfunction - the system always strives to maintain the selected vehicle level. In addition, a safety circuit continuously monitors the battery voltage. If the voltage drops below 10.5 V or exceeds 17.5 V, the system is shut down until the voltage returns to the specified range.
Pressure supply components
42
- Airmatic central receiver
A9 / 1- Pneumatic compressor AIRmatic
Y36 / 6- block of valves for control of clearance
In normal operation, the AIRmatic air suspension operates at a pressure of 6 to 10 bar, depending on the load. An electric compressor is used to supply pressure. In addition, the Airmatic air suspension system has a receiver (42) that stores compressed air at a pressure of between 13 and 16 bar. The pressure in the system is maintained from the compressor when the car is moving, or from the receiver when the car is at a standstill, or a simple compressor.
Clearance control
In the AIRmatic air suspension, the ground clearance of the front and rear axles is maintained thanks to the air suspension system. AIRmatic keeps the body constant with the engine running, regardless of load. To do this, air from the air compressor is supplied to the air struts through the valve block to adjust the vehicle level. The vehicle's ground clearance on the front axle is recorded, as on the rear (with the difference that on the front axle both the right and left values are taken into account, and only the average value on the rear axle) by two level sensors, the data is sent to the AIRmatic control module. The height of each of the air struts is controlled by a valve block and a relief valve on the compressor.
Air suspension components AIRmatic
Location of electrical / electronic components
A9 / 1- air suspension compressor AIRmatic
A1p13- Multifunctional display
AT 7
B22 / 3- rear axle level sensor
B22 / 8- left front wheel height sensor
B22 / 9- right front wheel height sensor
B24 / 3- left front body acceleration sensor
B24 / 4- right front body acceleration sensor
B24 / 6- Right rear body acceleration sensor
K40 / 7- right front fuse and relay module
k0- AIRmatic air suspension compressor relay
N49- steering wheel angle sensor
N51- AIRmatic control module with ADS
N72 / 1s2- clearance switch
N72 / 1s3- comfort / sport mode switch
S9 / 1- brake light limit switch
X11 / 4- computer output
Y36 / 6- valve block
Y51
Y52
Y53
Y54
Air suspension AIRmatic, arrangement of pneumatic components
40
- front air suspension strut
41
- rear air suspension strut
42
- Main manifold of air suspension AIRmatic
A9 / 1- AIRmatic compressor
Y36 / 6- AIRmatic air suspension valve block
Y51- valve of the front left air strut
Y52- valve of the front right air strut
Y53- valve of the rear left air suspension strut
Y54- valve of the rear right air strut
Air suspension compressor AIRmatic (A9 / 1)
An electric compressor generates the pressure required to lift the vehicle. A pressure relief valve built into the compressor is used to reduce the vehicle's ground clearance.
M1- compressor motor (electric motor)
a- air filter
b- overpressure valve
with- moisture separator (dehumidifier)
g- high pressure line
h- mounting plate (bracket)
A9 / 1- AIRmatic compressor
AT 7- air suspension pressure sensor AIRmatic
Y36 / 6- air suspension valve block
The main part of the compressor unit is the compressor itself and the electric motor. There is also a dehumidifier, filter, safety valves and a valve block. The valve block is secured by the same mounting plate just above the compressor and powered by a high pressure pneumatic line.
A dehumidifier, as you know, removes moisture from it. The safety valve is installed in the compressor unit (U1) and is required to vent air when the vehicle is lowered. The thinned air is led back to the atmosphere through the dehumidifier. This also cleans the filter. The dehumidifier is maintenance-free. The condensate is vented back to atmosphere when the pressure is released.
Air filter
Interestingly, it is quite difficult to obtain information on the operation and routine maintenance of the air filter. In general, it is recommended to change the filter from time to time to prevent damage to the AIRmatic air suspension compressor. But how much it is - who knows. I would suggest the same as the cabin filter. The filter can get clogged with debris and salt from the winter after our caring road workers who can block the filter. For W220, its number is A2203200069, or WK32 / 6 or WK32 / 7 MANN. It costs 10 Euros in the original, and it will be replaced in 15-20 minutes. Photo of a new and used filter.
Compressor replacement using the example of W220
- Disconnect the battery.
- Remove the wheel arch liner (front right).
- Disconnect the high pressure pipes ( 1 ) and compressor ( A9 / 1)
- Disconnect the overpressure valve connector ( A9 / 1y1).
- Disconnect the motor connector from the compressor ( 3 ).
- Pull out the air intake hose with air filter ( 2 ) from the side member.
- Unscrew the nuts securing the compressor ( A9 / 1).
- Disconnect the compressor relay ( K40/7kO) only when installing a new compressor. For other work, do not disconnect the relay in order to avoid damaging it!
- Install in reverse order.
AIRmatic air suspension components overview
Air suspension valve block AIRmatic ( Y36 / 6)
The air suspension valve block (part number A2203200258) located above the compressor is located in the right front fender. The valve block controls the vehicle's ground clearance by measuring how much air is needed for each of the struts. It has a solenoid valve for each wheel ( y1, y2, y3 and y4) to raise or lower the vehicle. Air suspension AIRmatic with central manifold ( y5) connects to the valve block. System pressure sensor ( AT 7) is located at the end of the block.
6 polyamide connections lead from the valve block to the following components:
1 - left front air suspension strut
2 - right front air strut
3 - left rear air suspension strut
4 - right rear air suspension strut
5 - central receiver
R - air compressor
Functioning
40
- front air struts
41
- rear air struts
k- residual pressure check valve
42
- main receiver of air suspension
A9 / 1- AIRmatic compressor
m1- compressor motor
y1- pressure relief valve
AT 7- air suspension pressure sensor AIRmatic
Y36 / 6- valve block
y1- valve of the left front pillar
U2- valve of the right front pillar
U3- valve of the left rear pillar
y4- valve of the right rear pillar
y5- pneumatic valve of the central receiver
a- air filter
b- safety valve
with- moisture separator
For safety reasons, only one valve can be operated at a time. If the axle has sunk too low, pressure is applied between the left and right valves alternately.
Lifting the car
Valve y1, y2, y3 and y4- respectively, front left, front right, rear left and rear right, compressed air from the central receiver or air compressor with an electric motor through the valve block ( Y36 / 6) is directed to pneumatic struts. As soon as the required vehicle level is reached at the front wheel, the corresponding valve ( y1 or y2) closes, the other valve remains open until the vehicle level is also corrected on the other wheel. On the rear axle, both valves ( y3 and y4) close when the vehicle reaches a predetermined level, the average between right and left (remember, it was already written earlier that the height is read from each of the front sensors, and the average value is taken from the rear ones).
Lowering the car
The valves of all pneumatic struts open ( y1, y2, y3 and y4) open, like the valve block ( Y36 / 6). Together with them, the pressure relief valve ( y1) in the air suspension compressor airmatic ( A9 / 1) and compressed air exits through this valve. The valves on the air struts remain open until the vehicle reaches the required ground clearance.
Check for leaks
On the right side of the vehicle, remove the wheel arch liner to gain open access to the compressor and valve block.
Using a leak detection spray (or at worst something like a soapy solution), apply it to the 1, 2, 3, 4, 5, P connection lines on the valve block and wait 10-15 minutes after spraying. This will help detect minor leaks. Severe leaks are immediately apparent.
At times, the valve block fails when the valves no longer hold pressure, or cannot close at all due to burrs. Theoretically, some service stations undertake to repair it, but how long such a repair will "last" is like a lottery.
Air suspension pressure sensor AIRmatic (B7)
Located in the front right side of the valve block. Measures system pressure and is used by the control module to recheck incoming data.
Functioning
a- electronic module (hybrid)
b- incoming pressure
c- line
d- metal body
e- glass core
f- glass seal
g- nominal pressure
h- pressure sensor
i- silicone oil
k- metal protective diaphragm
The sensing element compares the input pressure ( b), which must be measured with a reference pressure ( g) in the sensor. Pressure ( b) is transmitted to the pressure sensor ( h) by means of a metal protection diaphragm ( k) and silicone oil ( i). Electronics unit ( a), receives pressure data in the form of an analog voltage on the ECU, is located inside a metal case ( D).
Rack height sensor (B22 / 3, B22 / 8, B22 / 9)
В22 / 3 - rear axle height sensor
В22 / 8 - left front rack height sensor
B22 / 9 - right front rack height sensor
These sensors determine the vehicle height at the front and rear axles and transmit the values to the AIRmatic control module with ADS.
Sensor design: 2 Hall sensors in one housing.
Determines the level of the vehicle using the thrust from the left and right front axle upper wishbones. A sensor on the rear axle monitors the movement of the torsion bar and determines the average vehicle level. A sensor failure is detected by the control module by comparing the signals from each of the sensors.
Center air receiver AIRmatic (42)
In essence, it is a metal cylinder that stores compressed air so that you can use it without straining the compressor unnecessarily. It is located on the left side, behind the bumper. (see photo)
Comfort / sport switch (N72 / 1s3)
This switch controls the Adaptive Damping System (ADS).
The indicator switch is located at the top of the center console.
ADS automatically selects the optimal damping for a given driving situation. Sport or Comfort mode tells her your preferences at the moment.
The suspension setting is set according to:
- Your driving style
- Road surface conditions
- Your choice of suspension style, "sport" or "comfort," which you selected with the damping switch.
You can choose the following suspension styles:
"Comfort" - both indicator lamps ( 1
) are turned off.
"Sport 1" - one indicator is on ( 1
) on the control key.
"Sport 2" - both indicators are on ( 1
) on the control key.
The selected suspension style is retained in memory even after you switch off the vehicle.
Auto Level Control Switch (N72 / 1s2)
This switch controls the vehicle's ride height.
The following vehicle height adjustment levels can be selected when the vehicle is stationary:
“Normal” - for driving on normal roads. Indicator light ( 1
) switched off.
Raised - for riding on uneven roads or when using snow chains. Indicator light ( 1
) is lit.
Select the "Raised" setting only when current driving conditions require it. Otherwise, fuel consumption may increase and vehicle handling may also be impaired.
The vehicle's ground clearance increases or decreases according to the selected level value and vehicle speed (these clearance adjustments are so small that you may not notice any changes):
- With increasing speed, the ground clearance decreases by about 20 mm.
- As the speed decreases, the ground clearance rises again to the selected vehicle level.
The selected vehicle ride height is retained in memory even if the engine was turned off and restarted. However, a raised vehicle will lower the ground clearance to a normal level if the speed exceeds 120 km / h, or if you drive in the speed range between 80 km / h and 120 km / h for more than 5 minutes.
Air suspension control module AIRmatic with ADS (N51)
Airmatic control module assignment: Carry out all ADS and airmatic control functions. The control unit itself is located in the left fuse box.
Incoming data. The AIRmatic air suspension control module receives CAN inputs from the following components:
- ESP control module
- Engine control module
- Transmission control module
- Dashboard
- Steering angle sensor
- Comfort / Sport switch
- Clearance switch
- 3 body acceleration sensors
- Two front axle height sensors
- Rear axle height sensor
- Air suspension pressure sensor
Output functions. In Airmatic air suspension, the input signals are processed by the control module, which, based on these data, generates output signals for the following components:
- Valve block
- Central receiver
- Four ADS valves
- Multifunction display
- Indicators on the level / mode switches
- Air compressor
Air suspension compressor relay and fuse
Located in the right fuse box.
Air suspension struts (40, 41)
The air suspension strut AIRmatic takes over all the functions of suspension, ride height control, ride height adjustment and travel stiffness.
40 - suspension struts of the front axle. 41 - shock-absorbing struts of the rear axle.
Air suspension strut design: Air cushion is integrated into the single-tube gas-filled shock absorber. The ADS valve is attached to the air strut.
41
- Pneumatic rear axle strut
40
- front
a- damping core wall
b- cylindrical tube
c- piston rod gasket
d- piston rod guide
e- piston rod
f- working piston
g- spring rebound buffer
h- air membrane
i- hang up buffer
k- residual pressure valve
l- air chamber
m- separating piston
n- protective boot
o- high pressure gas chamber
Functioning: the weight of the car is distributed between 4 air struts, which maintain ground clearance thanks to the compressed air in the air chamber ( l), which are sealed underneath with a rubber membrane ( h). Under dynamic loads during movement, the membranes, being coupled with the air chambers, are rolled out and rolled parallel to the core axis, thereby providing the required stroke of the rack. This entire area is isolated from the outside world with a rubber boot ( n) to protect against dirt.
The vehicle's ground clearance rises / falls by increasing / decreasing the air pressure in the air chamber ( l), which leads to lengthening / shortening of the rack ( 40 ). A pneumatic valve ( k), which blocks air in the rack at the command of the control unit, or when the level of residual pressure in the rack falls below 4-5 bar.
Replacing racks
Original:
Front struts (without 4matic):
- A2203205113 (replaced by A2203202438)
- A2203202438
Front pillar (cars with 4matic all-wheel drive system):
- Left: A2203202138
- Right: A2203202238
- A2203205013
- A2203207913 (for option code Z04)
- A2203207813 (for variant code Z07) (replaced later by A2203202338)
- A2203202338 (for option code Z07)
BILSTEIN
Since BILSTEIN is the manufacturer of W220 stands, you can buy original stands directly from BILSTEIN for much cheaper.
Front left (car with 4matic all-wheel drive system): 44-051518
Front right (car with 4matic all-wheel drive system): 44-051525
Front struts (not 4matic): 44-042295
Rear: 44-042301
Arnott
Here is a controversial issue. Arnott sells both new and remanufactured racks. Previously, they were only in the United States, but now there are in Europe, respectively, they have become closer to us. But before you google where to buy Arnott racks, consider the following:
- Arnott claims that they use special seals made exclusively for them by Continental and they are simply eternal (well, at least they say they last longer than the original). In fact, Arnott provides a limited lifetime warranty for his products.
- Arnott rebuilt struts are cheaper than new ones (and you can also hand over your old ones, having earned decent money, BUT ... Arnott just install a new air cushion and membrane - piston seals, a gas-filled shock absorber (below) no one touches. That is, yes, the pneumatics works Does the rack itself work and how long will it last?
- There is also a "proprietary" version from Arnott - but .. Their racks do not support ADS (Active Dumping System). You connect them to the system, but they contain the command ... to fool the computer. Thus, they simply give the control unit false information that ADS is working, although this is not at all true. Also, the Sport 1 / Sport 2 modes will no longer be available to you.
Damping valve ( Y51, Y52, Y53, Y54)
Its task is to adapt the stiffness of the shock absorbers to the driving style and road conditions. The stiffness of the shock absorbers is regulated in the damping valves ( Y51, Y52, Y53, Y54). Each wheel has one damper valve that is installed between the upper and lower bearings of the monotube air shock absorbers. Each such valve (one might say a block) contains two solenoid valves ( Y1, U2), which allows the unit to switch to one of 4 possible shock absorber settings in accordance with what command the valve unit receives from the AIRmatic air suspension control module with ADS. The extremely short response time (milliseconds) means that the optimum damping force parameter is available almost immediately if sudden changes in the vehicle's running stiffness are required - for example, during an obstacle avoidance maneuver.
Design
Y51- front left damper valve
Y1- solenoid valve 1
U2- solenoid valve 2
p- piston valve block
The damper valve (Y51, Y52, Y53, Y54) consists of a body and two piston valves that are located above the solenoids and together form a solenoid valve (Y1, Y2). the system contains oil to absorb pressure drops and sudden loads.
Functioning
The illustration shows the front axle strut
40
- Front axle air suspension strut
Y51- Damping valve
y1- solenoid valve 1
y2- solenoid valve 2
a- bypass valve, high inlet pressure
b- bypass valve, low discharge pressure
with- bypass valve, high release pressure
d- bypass valve, low inlet pressure
f- control piston
m- separating piston
O- high pressure chamber
r- bottom valve
The ADS air suspension control module is used to obtain four different system settings:
Setting 1 For a comfortable ride with low sprung vibrations and low longitudinal and lateral acceleration. In this case, both solenoids remain open, which allows the oil to flow freely, thus absorbing the pressure drops in the air struts.
Setting 2 The system goes into a more severe mode. If the car is lowered for some reason, the solenoid valve y2 opens, and the solenoid valve y1 closes.
Setting 3 Reverse action from setting 2
Setting 4 When switching to sport mode, or registering by the system of sharp and strong longitudinal and lateral accelerations, to increase the safety of the car movement, both solenoid valves y1 and y2 are closed. All oil in the system is passed only under high pressure. This setting can also be activated in the event of a suspension malfunction and its further transition to emergency mode, about which you will be notified by a corresponding message on the multifunction display.
Air suspension malfunctions AIRmatic
Let's start with the display. Are you sitting (or driving) in the car, suddenly you hear a melodic bell and on the display ( A1p13) the message lights up: “ AIRMATIC VISIT WORKSHOP!»This message with a white background means there is an electrical problem in the system.
It is in the event of an electrical failure in the AIRmatic suspension with ADS that you will see on the display “ AIRMATIC VISIT WORKSHOP!“, Which means that the culprit of this message has been identified and recorded in memory. Even if you restart the engine (and the system itself) and the message disappears, and the suspension works normally, I advise you to go to the station and consider the errors STAR in order to eliminate them.
It is important to remember that in the event of a malfunction, the suspension goes into emergency mode - the valves close, the suspension becomes as stiff as possible, changing the level of rigidity, as well as changing the clearance is no longer available either manually or automatically)
Hit number 2 - " AIRMATIC STOP, CAR TOO LOW!"Yes, and red too. This warning appears if the vehicle's ground clearance on the front axle is more than 50 mm (60 mm US), or more than 60 mm (70 mm US) on the rear axle below the normal level. The message will disappear if the level rises to 48 mm or 58 mm (58 mm or 68 mm in the US), respectively, below the normal level. But it is better to identify the reason right away, especially if it is not just squandering due to a very long downtime. How to get to the service station - see below.
If in the process of driving you suddenly saw the red inscription "AIRMATIC STOP, CAR TOO LOW!", Stop immediately (try not to twist the wheels too much) and inspect the car. If the level really fell below the permissible level, you need to go to the service station and look for a problem.
Do not drive with such a problem - it will entail:
- The compressor will work without turning off and will simply burn out (you can turn off the compressor by removing the relay or fuse).
- If the stance is low, then the tire will rub the wheel arch liner.
- There is a risk of damaging other struts on the same axle.
There is a workaround for the A-pillars that you can use to get to the nearest workshop without the need for a tow truck:
Step 1: get wood blocks and cable ties
Step 2: jack up the vehicle
Step 3: Insert a piece of wood and secure it with cable ties
Step 4: lower the car
The ride will be harsh, but not much harder than in the “Sport” mode - the main thing is that you will reach the service station, and even the fenders with fenders will be in place.
With the message "AIRMATIC VISIT WORKSHOP!" white on the dashboard, which means that the malfunction is electrical in nature, you cannot do without DAS - you need error codes.
If an error is shown for 1 valve, for example, code C1324-001 - Fault in component Y53y1 (Left rear solenoid valve 1) in assembly Y53 (left rear axle damping valve unit), then the solenoid valve is most likely to blame, and if there are several errors immediately - there is a high probability of poor contact, or similar options.
"AIRMATIC STOP, CAR TOO LOW!" - red on the dashboard. Possible reasons
Compressor is dead- to test this hypothesis, start the car and see if it works (you should hear the compressor in the area of the front right fender). If it doesn't work, check the fuse and relay. A faulty relay can cause the compressor to run non-stop and it will simply burn out.
Leaking rack- with a strong leak, a characteristic hissing sound will be heard, with a weak one - it can be determined visually. It is very likely that the wheel on the other side (or the wheel on the other axle on the same side) will also be significantly lower, but usually to a slightly lesser extent. Please note that the same symptoms can also be observed in the event of a malfunction of the line or valve block, since the rack itself has a residual pressure valve that will shut off the air outlet from the rack only if the pressure drops below 4-5 bar, which cannot be visually distinguished from completely empty rack.
The line is not tight... It is possible that the line to the posts has cracks or microcracks. In the case of A-pillars, lines from the valve block to the struts can be spray tested (see above). However, it is so easy to get close to the pneumatic tubes going through the interior of the car to the rear axle. The simplest solution is to run an alternative line bypassing the "native" line. It still does not work - ok, we look further; works - we disassemble the salon and change the line. Or change the tubes from the struts in the valve block!
The valve block is leaking... It is possible that the valve block is not working properly and some of the valves does not close, then the pressure will be released back into the compressor and leave the system. Then the tube from the compressor to the valve block (the side that enters the compressor is lowered into a container with water, and we look at the bubbles)
The central receiver has lost its tightness... If the test shows that the receiver can no longer hold pressure, check the line to it for leaks before replacing it.
Level sensor defective... There are two ride height sensors for each of the front wheels and one for the rear axle. If the level sensor reports an incorrect height, the system will think that the vehicle already has the required ground clearance and will not raise the vehicle. The information reported by the sensors can be viewed using the DAS. If the car rises, but then falls again, the height sensors are most likely not the cause.
German manufacturers strive to constantly modernize the design of their cars, and therefore it is quite rare to repair the air suspension of a Mercedes W220. However, you should have an idea of both the design of the suspension itself and the stages of repair when it will actually be needed.
1 Design features of the Mercedes W220
Air suspension not only simplifies machine control, but also provides additional safety. There is a possibility to quickly change the clearance. The control box allows the maximum use of the lifting capacity, which helps to solve the stiffness problem. Mercedes has a suspension that allows you to choose the best operating mode. For example, for off-road and country roads, the softest is "comfort". In the city, the standard mode is suitable, and for a good highway - "sport". Also on the W220 it will not be difficult to drive onto the curb for parking, get out of a deep rut.
Instead of traditional springs and torsion bars, air suspensions are supplied with air cylinders. The compressor, in turn, will supply the required amount of air based on the mode. This allows a maximum ground clearance of 307 mm to be achieved, which means that depths of up to 600 mm can be overcome.
The air bellows in the car are designed for both the front and rear axles. They are controlled by the pneumatic system, which includes a compressor, a receiver (compressed air reservoir) and a control unit. The size of the valves, the diameter of the air line, the volume of the receiver and air bellows are selected specifically for the W220 so that the compressor works at full capacity.
Typically, a Mercedes can drive at least 100 thousand kilometers before air suspension problems arise and repairs are required. But here you should take into account the quality of the roads on which you have to drive. Therefore, it does not hurt to do a diagnostic examination every 50 thousand kilometers.
2 The main problems of air suspension
To avoid premature repair, it is necessary to pay attention to typical problems that may arise:
- The rear axle begins to drop, especially when the engine is turned off;
- When starting, the reverse process occurs, while at the very beginning the rear axle rises, and then the front;
- High speed leads to the fact that the front axle is lowered, and when braking it rises sharply;
- The ground clearance of the W220 also constantly floats and is difficult to adjust, moreover, there is a slight skew.
Air suspension problems often begin with air leaks. This is due to the operation of the valves and connecting elements, the compressor ceases to function normally due to wear of the rings. Plus, anti-icing agents that are sprinkled on roads in winter get on the air bellows and this leads to premature corrosion.
3 Replacing the air strut in the W220
Periodically, a situation arises when the replacement of pneumatic struts is required. As you know, Mercedes has various air suspension modifications. For example, for the W220 Airmatic, you have to change the C-pillar more often and here it is important to observe the phasing. However, these repairs can be done in-house. This will require the following:
The upper part of this air suspension element is sealed with adhesive. Over time, it cracks, and the air lock begins to let air through. The body is constantly lowered, and therefore it is necessary to make repairs with the replacement of the rack.
4 Elimination of possible malfunctions in the Mercedes W220
There are some other problems that affect the control unit to a lesser extent. More often, repairs concern air bellows and plugs, since corrosive substances, dirt and moisture constantly get into them. The receiver body may even crack, or the connecting tube of the system may fray (it, like the cylinder, must be replaced). It is necessary to check the condition of the valves, as sometimes the coils burn out. Even a slight misalignment will require calibration, and special equipment will be required here. But the compressor, on the contrary, fails much less often.
Mercedes requires periodic computer diagnostic examination. Therefore, serious repairs or in the event of a small problem for a Mercedes, unlike competing cars, is not always necessary. In addition, the W220 air suspension has good air struts, which are automatically adjusted by the control unit. Everything will depend on the road surface and conditions, while nothing will prevent you from switching to manual control (for this you just need to press the switch located on the dashboard).
The car has four damping modes. They are designed to monitor the condition of the coating and provide smooth running and control. For example, at a speed of 140 km / h, the ground clearance will automatically decrease to 15 cm, and at 70 km / h the level will be restored.
Diagnostics and prevention will prevent many problems from occurring, and timely replacement of faulty elements of this system will allow you to drive on any route absolutely calmly. Minor repairs can be performed on your own, but if you are faced with more serious problems, then it is better to trust the professionals - the Mercedes W220 deserves it.
X Do you still think that car diagnostics is difficult?
If you are reading these lines, then you have an interest in doing something yourself in the car and really save because you already know that:
- STO lomat big money for simple computer diagnostics
- To find out the error, you need to go to the specialists
- Simple wrenches work in the services, but you can't find a good specialist
And of course you are tired of throwing money down the drain, and there is no question of driving around the service station all the time, then you need a simple ROADGID S6 Pro AUTOSCANNER that connects to any car and through an ordinary smartphone you will always find a problem, extinguish CHECK and it's good save !!!
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Hello everyone!
On w221, the air suspension is installed as standard on all models, without exception. The system consists of a compressor, a valve block and 4 pneumatic struts in which there is also a part filled with oil. Most often, it is the mechanical part that is filled with this very oil that dies and the sound of the shock absorber appears.
I noticed that the car has been rising somehow slowly for a long time. And, in about 1.5 days, it drops if the car is stationary.
Many, by the way, think that kakraul (!) Is so bad. But the dealer told me right away that all the Mercedes are lowered. Some are slower and some are faster. At the same time, if, after starting the engine, the suspension returns (rises) to its normal position, then, they say, "This is normal. Absolutely normal."))
And then, one fine day, she did not rise. Well, okay, I thought, and parked the car and drove a Porsche. But, damn it, it began to get colder and tired of stumbling about a Mercedes (gyyy), I decided that the time had come!
The price of a new compressor for Avito is on average 28 thousand. It changes quite easily. They will be replaced at any service in 30 minutes. Well, or you can change it yourself in the same time if you have the desire and the tool. And many will say fuuu ... myself .... But! Do not forget that when w221 lays down on the belly, you cannot move on it and you need a tow truck! And this same tow truck can not always come to the place where the suspension died. I know a case when people changed the compressor right in the courtyard of a residential building because the tow truck could not squeeze through 5 dozen cars parked on the curbs. Therefore, all w221 owners will find it useful to check out this video.
I have a Mercedes diagnostic computer SD-Connect, which immediately told me that the compressor was not working, and the diagnostic test showed that it did not create any pressure.
By the way, the same Avito is full of ads from services that offer to change your deceased compressor for a restored one from 12-16 thousand rubles. And so, a person from the very first service where I called (to evacuate cars to them) named Valery (God bless him) told me: - Check the fuse. (!)
If you open the hood, the fuse and relay box is located on the right side of the windshield. It has 4 screws. We shoot and (sorry I didn't take a photo) in the case of my S350, the desired fuse is located on the edge of the akurat closest to the radiator grill in the middle. The 40A fuse is orange and very large. Located between two fuses of the same size, but different in color.
The dealer costs 218 rubles.
And yes, pneuma came to life !!
But the fuses just don't burn. Moreover, such amperage. It means that something wrong in the motor itself begins to happen. This can happen if the motor was very hard .... And what could be hard on it? And then (and 99% of the owners do not even know about it) I remembered the existence of the air suspension compressor filter. The filter is clogged, the motor is spinning, there is little air flow, it works longer than usual, strains, pushes, heats up, starts to consume more current than it should be and the fuse breaks. Is this option realistic? More than!
I must say right away that there is also a relay in the same box. It sticks in 90% of cases, which leads to constant and non-stop compressor operation. And then there will be either bang (and you will hear it and it’s good if you are wearing a diaper) with the replacement of the valve block or the same fuse to begin with.
The dealer's filter cost 882 rubles.
Looks like that
In the nearest service, it was changed for me within 15 minutes while I went for coffee. The price of the issue is 1000 rubles. It is located in the same place as the compressor. It is more convenient to remove the front lower bumper protection on the lift, and on the ground - the front right wheel and wheel arch liner.
After the replacement, the car began to rise noticeably faster, and the compressor intervals became shorter.
I was not lazy and took the old filter home and, having cut it with an engraver, looked inside.
Dealer Parts:
It took me 15 minutes to write this report, while I am sure that it will save tens of thousands of rubles for more than one owner who will certainly read it. Don't forget to share useful and interesting articles. Do good!))
Thank you for the inconvenience!))
Rear axle auxiliary air suspension kit for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35, four-wheel drive, 4x4, is installed in addition to the standard leaf spring suspension of the car and allows to reduce the load on the springs, increase the comfort of the car and improve the cargo performance of the car. Installation of air suspension will allow Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 to carry more cargo without losing controllability, relieve springs sagging and breakdowns, reduce body swing and roll. Air suspension for Mercedes Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is an excellent solution for extending the service life of the standard leaf spring suspension.
Installation of the auxiliary air suspension does not require any special skills and takes an average of 4 hours. Install the auxiliary air suspension kit for Mercedes Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is possible: in our workshop, in any car service, as well as with your own hands.
Features of air springs for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35:
- Reduced wear of springs and shock absorbers (standard springs on your car will last longer, because the air suspension will reduce the load on them, as well as on other suspension elements)
- Elimination of noise and vibration of the suspension and impacts of the bump stop during overload (air suspension completely excludes the situation when a commercial vehicle lies on the bumpers)
- The ability to install the air suspension on tired springs (after installing the air suspension, the springs requiring replacement will last a long time)
- Correct position of the body under any load (always horizontal position of the body of a commercial vehicle, regardless of the load, and this is the correct operation of the head light and a decrease in braking distance)
- Reducing the roll and rocking of the car (the air suspension does not allow the car to roll on the overloaded side, and is always in a horizontal position)
- Increase in comfort for the driver and passengers (a significant increase in comfort when driving cars on bad and uneven roads, both for the driver and for passengers (on passenger minibuses)
- Increase in profit from transportation (air suspension - air spring is the ability to transport 1.5 times more cargo per 1 trip + savings on replacement of springs and traffic police fines for overload
- The ability to control the overhang of the vehicle during loading and unloading (adjustment of the rear clearance to level the floor of the booth of a commercial vehicle with the level of the floor of the ramp for convenient loading)
- High service life of the air suspension (the air suspension does not require any additional maintenance, and effectively works for 5-6 years under any operating conditions, be it frost, dirt, salt and reagents. Working pressure is up to 8 atmospheres)
- Increase in comfort and softness possible
- The "Goat" effect is removed
Additional air suspension control options:
- It is possible to install a control system with adjustment from the passenger compartment
- The system can be installed on 1 circuit (total cushion pressure)
- Two circuits (different pressure in the pillows, reduces swing and allows independent alignment of the port and starboard sides)
- The ability to additionally install a receiver for compressed air in order to increase the speed of operation (pumping) of the air suspension, as well as add the ability to connect pneumatic devices, for example, pumping wheels or a pneumatic signal
Delivery set of air suspension for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35
Air suspension kit specially designed for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 and includes two pneumatic elements, brackets for attachment to the frame and axle, fasteners, accessories for pumping from an external compressor, instructions for DIY installation.
The kit includes:
- American Pneumatic elements (air springs) of the bellows type, which are optimally matched to the dimensions for the given vehicle. They do not require any maintenance due to a reliable rubber cord construction and serves more than 400 thousand in vehicle mileage in any road conditions
- fasteners of our own factory production from 6mm Russian steel, specially designed for this vehicle. These brackets are reliable, easy to install and will last a long time. The brackets are powder coated, which protects them from rust for the entire service life
- a set of Russian bolts, washers and nuts for assembling the kit
- air fittings and a pneumatic line from Camozzi, the kit includes 7 meters of air hose, which allows you to bring the pump nipple to any part of the car
- nipple for lowering and pumping with any external AirLift compressor
- installation instructions
- all equipment has been tested in various conditions, which gives us confidence in the reliability and durability of this air suspension kit. The kit comes fully disassembled with step-by-step installation instructions. Unlike competitors, we do not hide what the kits are made of and give the client the opportunity to familiarize themselves with all the fasteners during installation to make sure that they are reliable and easy to install.
Installation of the pneumatic kit:
Air suspension kit for Mercedes Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is installed in addition to the standard springs and does not change the standard suspension elements. Therefore, this kit does not require any changes to the vehicle title. Air spring for Mercedes-Benz Sprinter 309; 311; 313; 315; 319; 324; 209, Volkswagen Crafter 35 is placed between the frame and the springs on the special mounting plates included in the kit. The upper mounting plate is placed on the frame in the standard holes. The bottom mounting plate is placed on the bridge.
The principle of operation of the air suspension:
When the pneumatic bellows are filled with compressed air, the load is redistributed from the springs to the pneumatic elements. Further, when the car is moving over irregularities, the air in the pneumatic air bags is compressed even more, which will compensate for vibrations and buildup. Suspension behavior can be altered depending on the pressure in the air bags.
Recommendations for installing system components and maintenance periods:
- When installing the equipment, you must make sure that the parts of the suspension, brake system and other elements of the car will not damage the pneumatic elements and supply lines.
- After assembly, check the system for air leaks (using soapy water)
- Retest for leaks 100 km after installation
Attention! The minimum operating pressure in the cushions is 1 bar! Periodic cleaning of pneumatic elements significantly reduces the likelihood of their failure from adhering abrasives (sand, stones, dirt). The error in measurements of the air bag is not more than 5%. If the pressure is exceeded more than 8 bar, the parameters of the diameter and height will not change (cushion without load). In the course of long-term operation, the parameters of the outer diameter of the pillow may increase by 10%.
The technical parameters of the product, as well as illustrations, are for informational purposes only. The manufacturer of the product reserves the right to deviate from the declared parameters without prior notice.
Air Leak Kit Diagnostics (Diagnostic Areas and Leak Corrective Actions):
With the correct assembly of the air suspension kit, the permissible pressure drop from the air bellows is 1 bar for 72 hours (GOST provision)
If the system pressure drops by large values or for shorter periods, it is worthwhile to diagnose leaks of threaded connections, the connection of the air tube on the pressure gauge (if any), as well as the tightness of the air bags themselves.
Leak diagnostic tool - soapy water. If a leak is found, eliminate it by tightening the threaded connection with minimal effort or disassemble and assemble the assembly using a sealing material (FUM tape, thread, thread sealant).
"Mercedes Vito" is a very popular minivan in Russia. This car is in demand primarily due to its powerful and reliable engines, as well as a comfortable suspension. By default, Vito is fitted with coil springs at the front and rear. As an option, the manufacturer could complete the minivan with an air suspension. But there are very few such modifications in Russia. Most of them already have suspension problems. But what if you want to get a minivan on pneuma, which originally came with clamps? There is only one way out. This is a Mercedes Vito. It is possible to do this with your own hands. What does the air suspension do, how does it work, and what kind of feedback does it get? Read about all this and not only in our today's article.
Characteristic
So what is pneuma? This is a type of suspension that implies the presence of air cylinders.
They are elastic elements in the chassis and allow you to change the ground clearance depending on the volume of filled air. Cylinders are installed instead of springs, and in our case - coil springs.
Why is she so popular?
First of all, such a suspension is popular due to its energy intensity. There are many opinions about this, but no matter how many levers in the chassis are used, air cylinders absorb impacts softer than springs (and there is no need to talk about springs). What are the other advantages of such a system? If it is a cargo "Vito", the installation of such a suspension will increase the carrying capacity of the machine. So, when fully loaded, the car will not sag like before.
Design
The main component of any pneuma is air cylinders. Their other name is pneumatic springs. It is these details that play the role of elastic elements in the suspension. The cylinders take on the entire shock load. In addition, the car body itself is held on them. These air springs consist of dense multi-layer rubber and are able to withstand enormous pressure. There is a metal spacer on the top and bottom of the pillow, thanks to which the part is attached to the body and the suspension arms. This is a kind of platform for placing air springs. The cylinders themselves are cylindrical in shape, but they can change their height. Due to this, the vehicle's clearance is adjusted.
Compressor. As noted in the reviews, it may not be included in the Vito air suspension kit. As a budget analogue, the installation of pump nipples is proposed. What does a compressor give? This element pumps up the cylinders. The unit is connected to the standard vehicle electrical system. Also, the compressor has its own "cut-off". When a certain pressure in the receivers is reached (usually ten atmospheres), it automatically turns off.
What are receivers? These are hollow metal containers that contain compressed air. As noted in the reviews, a five-liter receiver is enough for a Mercedes Vito. It is not too big and it is enough for several cycles of raising and lowering the body. The receiver and the air suspension compressor of the Mercedes Vito can be connected together. Manufacturers often supply ready-made compressors with a receiver. It is very convenient. If you are installing air suspension on a Mercedes Vito with your own hands, you do not need to think about where and how to arrange these elements. It is enough to fix everything in the cabin (for example, under one of the seats).
The air suspension also includes a variety of hoses, fittings, and solenoid valves. The latter allow air to move through the system at the right time. And all this is connected to one control panel. Usually it is fixed near the driver's seat.
What do the owners say?
As noted in the reviews, the Vito air suspension kit should be purchased for several reasons. The first is a smooth ride. With this system, you can make the suspension travel even smoother without changing the rubber profile. The second reason is good handling. No matter how much luggage you carry, the car will be perfectly handled when cornering. The suspension can be made hard and soft - just adjust the pressure in the circuit. The third reason is the ability to adjust the clearance. For some, it helps to overcome snow drifts more easily, while others put on such a suspension to attract attention. On fully deflated pillows and beautiful disks, such a car looks very attractive.
At any time, the machine can be "dropped" on the ground and returned to the transport position. The process of lifting the air springs does not take more than ten seconds. But this applies only to those systems where there is a compressor and a receiver, - they say in the reviews. The air suspension kit for Vito with a nipple and without a receiver forces the owner to carry a booster pump with him. Otherwise, there is no way to change the configuration of the chassis. As they say in the reviews, it is better to take the air suspension kit for Vito with a compressor. Having overpaid for it once, you will not suffer with pumping the system through the nipple, especially in winter.
Varieties
The air suspension is divided into several more types. So, there are:
- Single-circuit system. This is the simplest and cheapest suspension scheme. In this case, the two pillows are controlled from a single valve. A single-circuit system is installed only on the rear axle. This is the most popular option among Vito owners. The car will not "goat" on the road when empty, while it is well controlled with a full load.
- Double-circuit. Such a system is installed on both axles of the vehicle. What is the peculiarity of such a scheme? Here it is somewhat different. On "Vito" cylinders are placed for each wheel separately. But they are independently controlled in pairs. The driver can raise or lower only two front or two rear airbags separately. The cost of such a system is about 2 times higher than that of the previous one.
- Four-circuit. This is the most complicated and expensive air suspension system on Vito. Its device assumes the presence of a complex control panel with a whole set of solenoid valves. Air supply is carried out directly from the receiver or compressor. But if in the previous case two pillows were inflated at once, then here it is possible to control each air spring individually. The cost of a four-circuit system is 50 percent higher than the previous one. But as noted in the reviews, the air suspension on the Vito of such a plan will be superfluous. For comfortable control, a two-circuit system is sufficient.
Price
The price of the most budgetary air suspension for Vito is 34 thousand rubles. This is a single-circuit system with nipple pumping, without a receiver and compressor. The kit includes:
- Plastic tubes.
- Fitting.
- Nipple adapters.
- Fittings.
- Air cylinders in the amount of two pieces.
- Rear axle mounting kit.
Additionally, it is proposed to install a compressor with solenoid valves and a receiver. This option costs about 25 thousand rubles. But as noted in the reviews, such a set of air suspension for Vito Mercedes will be the most optimal.
As for the two-circuit system, it will be more expensive by 30 thousand rubles, excluding the receiver and compressor. Well, the price of a four-circuit suspension reaches a hundred thousand or more, depending on the brand of cylinders and other components.
Specifications
Below we will consider what air suspension characteristics on Vito have:
- The diameter of the air springs is 11 centimeters.
- The working pressure range is from three to eight atmospheres.
- The minimum allowable pressure is one atmosphere. If you operate the system with deflated cushions, they will quickly become unusable, even if the air springs are made of hard and strong rubber.
- The permissible lifting force is one and a half tons per one pneumatic element at a pressure of 10 atmospheres.
Suspension kits usually come with a one-year manufacturer's warranty.
How is the air suspension installed on Vito? Process description
This procedure can be done both independently and with the help of the hands of specialists. The main difference between the air suspension installation on the Mercedes Benz Vito is that the pillows are the main elastic element, and not an auxiliary one, as on the Sprinter and other commercial vehicles. Here the air spring is installed in place of the factory coil springs. And so that the part fits snugly in the cup, special metal spacers are provided. The reader can see how the finished air suspension on the Mercedes Vito looks in the photo below.
Thus, the cylinders are mounted between the arm and the body side member. It is not worthwhile to additionally strengthen the structure. Everything is installed at the factory. So the first step is to put the Mercedes-Benz Vito on a lift or jack it up on a level surface. It is advisable to unscrew the lower shock absorber mount. This is necessary in order to remove the old spring. If it somehow does not give in, a special spring puller should be used. At the next stage, you can start installing the air suspension on the Mercedes Vito. At the top and bottom, the metal spacer is secured with a heavy-duty bolt. It is necessary to strictly align the pillow so that there are no distortions. This is the only way the suspension will work properly on Mercedes-Benz Vito.
Then you can start laying the air lines. Please note that for safety reasons, they must not intersect with the brake pipes. The lines can be fastened with plastic ties. After that, the outputs should be connected to the solenoid valves and the compressor. You also need to lay the wiring to the control panel, which will be located in the passenger compartment.
How is the air suspension installed on a Mercedes-Benz Vito next?
Then you need to connect the compressor to the vehicle's network. After that, you can start the system. The compressor will pump air into the receiver, after which the cylinders will also be filled with oxygen. Depending on whether the solenoid valve is open or closed, we lower or raise the suspension.
Installation without receiver and compressor
When choosing a budget system, you need to decide on the location of the swap nipples. They can be installed anywhere, such as under the passenger seat or at the bottom of the glove compartment. These nipples have the same shape as on a regular wheel. And pumping will be done through a 12-volt pump powered by a cigarette lighter. The installation algorithm is identical. First, the old springs are removed, then the cylinders are mounted and bolted on both sides. Don't forget about the shock absorber.
We must fix it back, otherwise the buildup will be colossal. After that, the air line is laid to the passenger compartment. Using adapters and a T-shaped fitting, we connect both lines to a common terminal. So we will have a single nipple that simultaneously and evenly pumps up two pillows. This completes the installation of the air suspension. You can start operating.
Before lowering the car from a lift or jack, you need to check the tightness of the system. To do this, the cylinders should be pumped up to ten atmospheres and a soapy solution should be prepared. Using a brush, apply it to important joints. If bubbles are present, tighten the fittings even more. And so on until such breakdowns are completely absent in the system.
Service
In order for a new suspension to last as long as possible, it needs periodic maintenance. On the eve of winter, it is recommended to wash off the dirt from the cylinders and treat the rubber with silicone grease. So the material will not be so hard at sub-zero temperatures and will not collapse from friction with itself.
It is the dirt that causes the etching of the pillows. It works like an abrasive, producing small damages, cracks and tears. Over time, they grow into holes through which air seeps out under pressure.
Conclusion
So, we found out what air suspension is and what are the advantages of installing it on a Mercedes Vito. As you can see, this is a very useful purchase. But you need to choose the right system. Do not overpay by buying a four-circuit system for one hundred thousand. But you do not need to economize too much, otherwise one day you will simply get tired of pumping up the cylinders through the nipple. The best option is a single-circuit system with a complete set, which includes cylinders, valves, a receiver and a compressor.
It is very important for every car enthusiast not only to keep his car safe and sound, but also to improve it every day. There are more than enough amateurs in our country! For this, people buy their own garages, a huge number of different tools and spend a lot of time. And this is correct, because, as you know, it is better to do everything yourself well than to trust a stranger and get something dubious.
There are several ways to improve a car:
Replacing the suspension of a passenger car with pneumatic
There is one more small point that will help you improve a passenger car - improve or completely change the suspension to pneumatic. This will help to completely change the comfort and handling of the car. But what if there is no money for this, and there is only an opportunity to collect it yourself? How to correctly install the air suspension of a passenger car with your own hands? The answer is to figure it out and make it by hand.
First, it is necessary to acquire all the constituent elements of this system. Compressor, pneumatic bags, connecting pipes, control units, pressure gauges, valves and air injection cylinders are required. All this can be bought inexpensively in mechanical and electrical stores; it will not be difficult to find this if the model of your car is widely known and widespread in Russia. If buying everything separately is not an option, then you can buy a full set of equipment, but you will have to spend about 30 thousand rubles.
Now, briefly about how to replace such a thing as air suspension. First of all, it is necessary to disassemble the front suspension, but leave the original housing of the support legs. Next, we bore the body to the required size of the pneumatic cylinder. We replace the suspension struts with air bags. This part of the work is the most difficult and accurate, because it requires care and caution. After the above procedures, we lay the tubes connected to the cylinders and the receiver from the back side. It is convenient to install the receiver in the trunk, place and strengthen the pressure gauges there.
Car air suspension pressure
The pressure must be distributed correctly. Due to the congestion of the front part, we set 8 atmospheres for the front wheels, and 6. For the rear wheels, we will have to make the structure heavier, but add a compressor. The last step is the simplest - you just need to add the electrics: wiring, fuses, switches. Their arrangement should be harmonious and unique for each vehicle.
A car air suspension is a suspension by which you can adjust the height of the body relative to the road, change the ground clearance for off-road travel.
What is air suspension?
Air suspension is used for trucks and various trailers. This suspension is also used in business class cars. It can be the basis for existing similar pendants.
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The main purpose of this device is ensuring higher road safety and comfort when moving. Some business cars are equipped with pneumatic elements at the heart of the adaptive suspension.
Air suspensions can be classified into three main types. it single-circuit suspensions, double-circuit and four-circuit... The air suspension is often included in a ready-made vehicle package, and can also be installed independently. If you install the suspension yourself, you have the option of manually adjusting the body height. What is the difference between all three types:
1. Single-circuit suspension is designed for one axis machine (back or front). Single-circuit suspension is often installed on trucks, where the emphasis is on adjusting the rear axle of the vehicle, depending on the load on the body.
2. Double-circuit air suspension can be installed on two axles and one. This allows two axes to be controlled. But if the dual-circuit suspension is put on only one axle, then it is possible to independently adjust each wheel.
3. Four-circuit air suspension is a complex system. In this mode all four wheels can be adjusted, the back-up system is carried out. Such a pneumatic system is controlled using. Support pressure regulation is carried out with the assistance of special sensors.
The basis of the air suspension structure consists of a control unit, special sensors, a compressor for air supply, a receiver, pneumatic elements for each wheel and a control unit. When the suspension is working automatically, body height is adjustable depending on speed, tilt etc. The operation of automatic and manual adjustment is slightly different. But in general, the principle and purpose have the same meaning.
What cars does it come from the factory on?
It is interesting to know that one of the first cars equipped with air suspension was Citroen DS in 1955... And imagine, in the very first days, this car model received a huge number of applications, a third of which were made literally within the first hour.
Serial production of the Citroen DS was the first to include air suspension. Today, also, the production of cars of this brand with such a complete set continues, as well as such cars as Toyota, Mercedes, etc. The air suspension is better to use together with the standard suspension. It will, as it were, take on part of the load, working as an auxiliary element.
To be able to adjust the height of the body relative to the road lane, you can install an air suspension and use it in conjunction with the standard suspension. Cars that are designed to carry various loads, with large bodies and medium-sized trailers, available with built-in pneumatic system... For example, such as Mercedes, Renault Master, etc. Also various models of dump trucks, large-sized trucks for transportation of large loads. In these types of vehicles, a pneumatic system is a must. It facilitates the movement of the car and makes the ride easier and more comfortable.
What machines can you install yourself?
How to make an air suspension yourself and on which car models can you install it? In practice, manufacturing is not particularly difficult. Contrary to popular belief that such an installation is unreliable, this process is quite effective and realistically feasible.
You can design and install yourself air suspension for VAZ car... There are some important points to keep in mind. The most difficult moment in the manufacture of a suspension for a VAZ is the replacement of shock absorbers with pneumatic cushions. It is better to use the original rack body for support. It is necessary to take into account the features of a specific VAZ model and the type of pneumatic cylinders used.
To design an air suspension for a VAZ car, you will need a set of certain parts and mechanisms. No worries. There are no difficulties in this process.
What is needed for this:
1. Compressor.
2. A set of 4 pneumatic cushions. When selecting pillows, specific models can be used specifically for VAZ, and there can also be others that are suitable from other car models.
3. Receiver for air injection. It should be cylindrical for a VAZ sedan. For hatchbacks, the receiver is shaped like a spare wheel.
4. You will need 4 pcs. solenoid valves.
5. Connecting tubes.
6. Two pressure gauges.
Directly during the manufacturing process, you may need to buy other related parts, wires, fasteners, etc. Approximate the cost of all elements in total will be from 800 to 1200 dollars... It depends on the individual parameters of the design and the car model.
Advantages and disadvantages
Like any device, air suspension also has advantages and disadvantages. One of the advantages of having a pneumatic system is the absence of noise and the smoothness of the vehicle. A big plus is automatic clearance adjustment and the stiffness of the struts during movement. These qualities are inherent in factory installation systems. Regarding the four-circuit pneumatic system - manual setting, with such a model with automatic control it is not used at all. Because it is a very complex and costly process to do it yourself.
The disadvantage is low probability of successful repair... For example, pneumatic struts, failing, already not repairable... All you need is replacement parts.
The cost of the kit and the installation itself
If we talk about the cost of the pneumatic system, then it is different. Depends on the type (single-circuit, double-circuit, four-circuit). And also the price depends on the manufacturer and supplier. In the price range in Ukraine the cost of pneumatic elements and kits can be from 4,000 to 25,000 UAH. Depends again on the type of model.
The installation cost depends on the needs. On average, it can be from UAH 2,500 to 10,000. It depends on your goals and individual wishes. Before proceeding with the installation, you need to clearly and in detail explain to the master all the nuances. Because each revision is an additional cost. It is not always necessary to buy completely all the parts to assemble a kit. For this, it is advisable to get the advice of a specialist in this area. After that already summarize the entire cost of installation and related items workflow.
The possibilities for tuning your car are almost endless. Starting with external and ending with cardinal technical changes. One of the biggest changes can be the air suspension, which will make people pay attention to your car. This device has many advantages:
- the car becomes more dynamic;
- increased stability;
- air suspension relieves the load on the suspension, thereby increasing its resource;
- the car will become more comfortable.
The main disadvantage is the price. Installing air suspension in a tuning studio will cost a pretty penny. It is this factor that discourages most motorists from adding this tuning element. But if you have the desire and opportunity, then the air suspension with your own hands is not as difficult as it might seem.
Where to start, of course, with the collection of the necessary components. The air suspension is a rather rare tuning element, so it is difficult to find an assembled one.
Components
Air suspension cushions are what will have to spend the most money, in fact, the cushion replaces the spring and shock absorber, as for the choice, it all depends on your car. At the moment, there is a wide selection on the market, you can definitely choose the right part for yourself.
Installation
The installation process on modern vehicles is very similar.
It all starts with removing the native rack. For this
- Unscrew the nut on the steering end and pull it out of the rack.
- Unscrew the nuts securing the strut to the steering knuckle and securing the upper support.
- Remove the brake hose.
In the future, from the old rack, you will need a travel stop for the upper support and a support with a bearing. Further events can develop in two ways
The finished air suspension is installed in the reverse order. Fasten the upper strut support to the steering knuckle, put the steering tip and brake hose in place. Next, you deal with the hoses (it all depends on the device of the car, in principle there is nothing complicated) and install the valves. Install the electronics (toggle switches, start buttons and wires) and connect everything.
Functional check
The ideal test should be done indoors. Fill the system with air (8 atm is enough), close the garage and listen carefully so as not to miss possible air leaks. If the first step is successful, check all connections with soapy water. This is followed by a final check for raising and lowering the vehicle. That's all, the air suspension is installed by hand. This is how, following the instructions, you can personalize your car, please yourself and surprise those around you.
There will be no bagel versus sleeve comparisons in this topic. High quality Pindos air bags will not be mentioned.
Only availability, simplicity, cheapness.
So, we will talk about Scania cockpit pillows.
Ready-made cockpit pillows are definitely great and wonderful. Modified with a file - installed. What could be easier.
But what if the pillow cannot be installed in this form, if you need other characteristics, less travel?
One of the most common problems when installing air suspension on a VAZ PP is the location of the lower bracket of the rear cushion. If you put it on a spring cup, then the plastic part of the bracket will be higher than the rack body, and if the suspension breaks down, there will be a blow to this same plastic bracket. In addition, he will not let the car sink below.
Well, we saw off the cup, grind out the retaining ring and weld it 5-7 cm below the spring cup. The problem with the protruding bracket is solved, but another problem appears.
The spring cup is at the level of the rubber profile, and lowering the lower point of the cushion below, we set the bracket just opposite the wheel - accordingly, there is a chance to wipe the cushion, especially when installing wheels of greater width and diameter.
The solution to the problem has several options: installing bagels, moving the mount back up, installing spacers on the wheels, shortening the pillow with the installation of other braces.
Another equally common problem is the mismatch between the inner diameter of the cushion and the diameter of the A-pillar housing. The same problem can be attributed to the inability to put on the pillow through the outer nut or ledge on the rack.
This problem is also solved in different ways.
Someone sharpens plastic:
Someone grinds special cases:
Well, one more option:
All of these options require only a full-length sleeve to be fitted.
But what if you really want a short walker or you need to reduce the length of the sleeve?
This issue cannot be resolved without solving the problem of sleeve sealing.
In the factory version, the sleeve is crimped with a special ring. The ring has certain strength characteristics and resistance to corrosion, in addition, a special machine is needed to crimp this ring (like those that crimp RVD). All this makes the crimping method practically impracticable at home.
But there is one relatively simple way to shorten the Scania pillows.
Quote: " The process of shortening the same Scaniev pillow is as follows. The elastic is cut with a knife along the edge of the metal ring. The metal ring slips out with little effort without an elastic band. We shorten the elastic of the pillow to the required length. We put the same metal ring on the pillow and press it into place like an oil seal using a machine or a press and soap solution. On Scaniev pillows, it is better to shorten the pillows from above, since they have a metal upper support.
In this way, the pillows in this photo are shortened. Although the rings are differently machined for the convenience of folding the pillow. You can sharpen new rings, but the dimensions must be taken from the originals."
Knowing the general principle, you can order the necessary components for the turner:
It is not very convenient to look for a press every time to assemble a disassembly. Therefore, it is possible to seal with bolted cones:
There is one more way. This method is based on the principle of connecting the union nut for plastic pipes CAMMOZI.
