The UAZ Patriot car has high off-road cross-country ability due to all-wheel drive. Front axle UAZ Patriot is pluggable.
The transmission of torque to the axle is carried out using a transfer case.
Front axle device UAZ Patriot
The front axle of the UAZ patriot car consists of:
- Reducer;
- Housings;
- Two axle shafts;
- Semi-axle housings;
- Steering knuckles;
- Brackets for fastening springs and shock absorbers.
Reducer
The gearbox of the front axle of the car consists of the main gear and the cross-axle differential. The main gear is made in the form of two gears. The pinion gear is small and is mounted on the drive shaft. The driven gear is increased in size, which allows to reduce the torque transmitted to the wheel mechanisms. Gear teeth are angled. When operating the assembly, the teeth of the gears do not collide with each other. This reduces the noise level while driving.
An interwheel differential is installed inside the driven gear of the front axle reducer. When turning the machine, it allows the wheels of one axle to rotate at different speeds. The interwheel differential is made in the form of bevel gears mounted on two axles. The spline part of the axle shafts is included in the cross-axle differential mechanism.
Steering knuckles
A distinctive feature of the front axle is the presence steering knuckles... They are essential for driving. To transmit torque to the wheel mechanisms, regardless of their angle of rotation, the manufacturer equipped the axle shafts with a constant velocity joint.
REFERENCE: Unlike previous models of the Ulyanovsk Automobile Plant, the UAZ Patriot car has a larger angle of rotation of the wheel mechanisms. This is achieved by installing ball bearings instead of the pivot mechanism.
Frame
The scheme of the front axle of the UAZ Patriot implies the presence of an all-metal body that forms the gearbox housing. To ensure tightness, the gearbox housing is closed with a cover. It is bolted on. A gasket is installed at the junction of the cover with the gearbox housing. From the side of the wheel mechanisms, the axle shafts are pressed into the gearbox housing.
ATTENTION: In order to avoid excessive pressure in the front axle crankcase as a result of temperature rise, the lubricant manufacturer has installed a breather valve. It communicates the bridge crankcase to the atmosphere, preventing dust and dirt from entering the mechanism.
How to enable and disable the front axle on the UAZ Patriot
The front axle is switched on on the UAZ Patriot car transfer case... The manufacturer installed two types of transfer cases on the model. Older versions are equipped with a mechanically controlled RC.
The front axle is engaged on a mechanically controlled transfer case by a lever installed in the passenger compartment between the driver's and passenger seat... The lever mechanically moves the transfer case rods.
Newer versions of the vehicle are equipped with an electronically controlled transfer case.
The transfer case control unit switches on the electric motors. Electric motors move the rods to the required position.
To turn on the front axle on the UAZ Patriot, you must:
- disengage the clutch. To do this, depress the clutch pedal installed in the passenger compartment;
- After disengaging the clutch, set the lever or regulator to the required position;
- After releasing the clutch pedal, the vehicle's front axle will be engaged. Disconnect the axle drive in the reverse order.
Possible malfunctions and their causes
The design of the front axle is reliable and unpretentious to operating conditions. Most of the malfunctions that arise during the operation of the car can be eliminated by a person with minimal technical knowledge. Below are the most common malfunctions that require repair of the unit. You can also read about.
The presence of grease drips indicates a violation of the crankcase tightness. The cause of grease leakage may be a violation of the gaskets or wear of the oil seals. If a malfunction is detected, it is necessary to replace the worn gaskets or oil seals.
When installing, the gaskets must be sealed with a sealant.
Increased noise
A loud noise during the operation of the unit may indicate wear of the gears or bearings. To troubleshoot, you will need to disassemble the assembly. Failed parts must be replaced with new ones.
Deterioration of lubricant quality
Poor lubricant quality may be the cause of loud noise during unit operation. It is necessary to regularly change the lubricant in the gearbox housing. Regular use of the vehicle for off-road driving or fording can cause water to enter the crankcase. Water prevents the rotating parts of the mechanism from lubricating, which can lead to complete seizure.
In order to avoid failure of the entire unit, it is necessary to regularly check the quality of the lubricant. When using a car for overcoming a ford, the breathing valve is equipped with a rubber hose, the other end of which is brought out under the hood.
Repair and maintenance of the front axle UAZ Patriot
For normal operation of the unit, regular maintenance is required. To do this, it is necessary to visually inspect the case for grease leaks.
If it is necessary to repair the front axle of the UAZ Patriot, disassemble the assembly. You can disassemble the front axle without removing it from the car. Disassembly is carried out as follows:
- Install the car overpass, inspection pit or lift;
- Immobilize the vehicle by installing recoil devices under the wheels;
- Drain waste lubricant from the crankcase. To do this, you need to prepare a container with a wide neck;
- Jack up the front axle and install it on specialized stops;
- Dismantle the housing cover and propeller shaft;
- Where to mount the axle shafts;
- Unscrew the nut that secures the drive shaft flange;
After completing these steps, the front axle gearbox components will be available for replacement. The assembly of the assembly is carried out in the reverse order. To facilitate the repair procedure, it is necessary to use the diagram of the UAZ Patriot front axle device.
From the above, it follows that the front axle of the UAZ Patriot vehicle increases the off-road performance of the vehicle. The device of the unit makes it reliable and unpretentious to the conditions of use. For normal operation of the mechanism, it is necessary to regularly carry out maintenance.
The whole line four-wheel drive vehicles UAZ has the same transmission design. On the Patriot and Hunter models, as well as all additional models created on their basis, Spicer units are installed, which are equipped with a continuous crankcase. They are named so in honor of the engineer K. Spicer. He is the author of a large number of patents that are now owned by Dana Co.
This type of front axle first appeared on the 3160 and 3162 models, after which they began to be used for the Patriot, Hunter and pickup models based on them.
The front axle of the UAZ Patriot has combined functions. He can be both master and controlled at the same time. It is based on a hollow beam, inside which the main gear and differential pass. Through them, torque is supplied to the front hubs.
The axle shaft is made in the form of a whole part, with CV joints installed, which allow entering a large angle of rotation, while maintaining the torque.
At the moment, such hinges are also installed on other UAZ models on the old-type nodes - Timken. This allows you to combine the great reliability required by the cargo and passenger transport with good handling. Such models are called hybrid bridges.
The rear axle of the UAZ Patriot is also made in the form of a hollow beam, at the ends of which the hubs of the driving wheels are fixed with the help of special bearings. They are driven by an internally located differential. In this, the design of the rear and front axles is quite similar.
Design features.
To give the structure the greatest strength, the thickness of the substrate is increased by almost 10 millimeters. As a result, reliability has increased significantly, but the noise level has decreased. The first type was mainly used on cars with gasoline engine, the second only for diesel, produced since 2015.
When buying, it should also be borne in mind that the width of the bridges for some models is different. For example, Hunters are fitted with front assemblies with catalog number 31605-2300011. They provide a track size of 1445 millimeters, a gear ratio of 4.111. Model 3162-2400010-10 is installed on Patriots and pickups
The rear knot has catalog number 3162-2400010-10 with gear ratio 4.111.
Checking the status.
Service must begin with an external inspection of the axles and control of the oil level in the crankcase. It should be level with the drain plug hole. In addition, you should periodically check the tightness of all bolts, the absence of clearances in the gears.
When changing the oil, check for metal chips on the drain plug magnet. Its presence will indicate the development of the gears.
Clearance adjustment.
Axial clearance is the most common problem that occurs during vehicle operation. This is due to severe wear on the gear teeth, which over time can lead to a jamming of the axle.
You can check the condition by shaking the drive gear by the flange.
To fix this problem, tighten the flange nut properly. This may require a little effort as there is little punching applied to it. It should be tightened until the gap disappears.
Useful video
Adjustment of the UAZ Patriot bridge is quite debts and a time-consuming process, which includes many nuances that must be consistently performed in order to avoid problems during repairs.
Axle adjustment is needed if problems appear in the form of broken teeth, oil leakage, bearing wear, etc. This is possible not because the quality of the parts leaves much to be desired, but because of improper operation of the car, as well as if the clearance in the bearings is incorrectly set main gear pinion, lack of oil or its poor quality. The consequences of this can be as extraneous noise in the bridge, fuel consumption, deterioration in handling, increased wear of parts, and you can even catch a wedge of the bridge.
Whatever this happens, it is necessary to carry out special renovation work, such as replacement of oil seals, replacement of bearing adjustment. At the end of such work, you should check the correctness of the axle adjustment, it can be determined by the temperature of the axle after a fast ride.
Remember that a timely oil change will prolong the life of your parts!
If you have a problem with fuel consumption, this will help you
- Breakage of the teeth of the main pair.
- Breakage of the semi-axle teeth.
- Oil leaking through oil seals.
- Wear or destruction of differential bearings.
- Wear or destruction of the teeth of the main pair.
- Wear and destruction of hub bearings.
- Destruction of the adjusting washers.
Causes of malfunctions
- Incorrect operation. UAZ Patriot is rear wheel drive
car with plug-in 
front axle. If you drive with the front axle connected on hard roads, and even with turns (!), Then the transmission will not last long.
- The presence of axial play in the bearings of the main drive pinion.
- The presence of axial play in the bearings of the differential of the main drive.
- Wear of parts, usually due to lack of the required quantity and quality transmission oil.
- Wear of parts due to poor quality. Quality bearings, adjusting rings should be looked for.
- Overloading during operation due to necessity (for example, competition) or inability to drive.
- Incorrect adjustment of the main pair.
- Not timely replacement of transmission oil.
- Operation with a gear oil brand out of season.
- Overloads from interlocks.
- Long-term operation with different tire pressures.
- Beat cardan shaft(poor quality of the shaft, destruction of the crosses, destruction of the outboard bearing).
- Lack of grease in the splined joint of the propeller shaft.
- Incorrect tuning - the length and travel of the propeller shaft do not correspond to the changes made.
- Wrong tuning - wrong gear ratios transmissions.
- Lack of high-quality lubrication in the bearing hubs.
- Prolonged slipping of one wheel while fixing the other wheel.
- Incorrect and untimely adjustment of the hub bearings.
Consequences of malfunctions - Rear and front axle UAZ Patriot
- Noise in the bridge.
- Increased fuel consumption.
- Deterioration of handling.
- Increased wear of transmission and engine elements due to increased load.
- Jamming while driving is the worst thing. The main reason for the axle jam is the presence of axial clearance in the bearings of the main gear drive gear or the presence of axial clearance in the bearings of the main gear differential. The jamming of the rear axle of the UAZ Patriot really happens if the owner has completely started his car or is treating him completely disgracefully, since before the bridges become jammed, they are informed with a prolonged hum, noise and crackling that they need repairs. Bridge can jam if it gets very hot
Rear and front axle
Cause of malfunction and remedy
Constant increased noise during the operation of the front axle
1. Worn or incorrectly adjusted differential bearings.
2. Incorrect adjustment. damage or wear of gears or gearbox bearings.
3. Insufficient amount of oil in the axle housing.
1.1 Replace worn parts, adjust differential bearing.
2.2 Determine if the gearbox is faulty, repair or replace it
3.3. Restore the oil level, check if there is no oil leakage through the seals of the front axle housing
Noise during vehicle acceleration and engine braking
1.Incorrect adjustment of the meshing of the main gears.
2. Incorrect lateral clearance in the meshing of the final drive gears.
3.Increased clearance in the pinion bearings due to a loose flange nut or bearing wear. 1.1. Adjust the engagement.
2.2 Adjust the clearance.
3.3. Adjust clearance, replace bearings if necessary.
Knock at the start of the vehicle
Worn hole for the pinion axle in the differential box Replace the differential box and, if necessary, the pinion pin
Replacing the oil seal of the drive gear shaft of the front axle reducer
Replace the oil seal if oil leaks from under the gearbox flange.
Adjusting the bearings of the main drive of the front axle
Adjust the final drive bearings in the following order.
1. Select the adjusting ring 5 (see Fig. 6.4). Its thickness d1 (Fig. 6.5) is determined (with an accuracy of + -0.025 mm) based on the actual dimensions B and D (see Fig. 6.5 and 6.6) by the formula d1 = B - (111.960 + D) (mm).
Rice. 6.6. Differential bearing adjustment parameters
Rice. 6.7. Measuring the mounting height of the main drive pinion bearing:
1 - mandrel; 2 - outer bearing race; 3 - bearing
Install the ring in the crankcase 16 (see Fig. 6.4) of the main gear.
2. Install the pinion shaft into the front axle housing.
Note
Check the torque of the pinion shaft. It should be 1.0-2.0 N / cm (0.1-0.2 kgf / cm).
3. When installing the differential assembly with the driven gear, measure dimension E (Fig. 6.7), applying an axial force P equal to 4000-5000 N (400-500 kgf), and turning the gear several times so that the bearing rollers take the correct position. Measure the distance B in the crankcase (see Fig. 6.5) from the pinion axle to the thrust end of the differential bearing. According to the actual dimensions B, E and the mounting dimension of the driven gear equal to 50 mm, select (with an accuracy of + -0.025 mm) the adjusting ring according to the formula
d2 = B - (E + 50 + X) (mm), where d2 is the thickness of the adjusting ring;
X is the maximum deviation from the mounting dimension, equal to 50 mm, with a corresponding sign (plus or minus), this dimension is electrograph applied to the end face of the driven gear.
4. Install the differential assembly with the outer rings of its bearings and an adjusting ring into the front axle housing and secure it.
5. Adjust bearings 6 and 22 (see Fig. 6.4) of the front axle differential by tightening nut 23, periodically rotating the differential so that the bearing rollers take the correct position. After tightening the nut, the total turning torque of the differential drive gear (Mv. Sh.) Should be within Mw. NS. + (0.21-0.42) (Nm). Carry out the check by turning by the pinion gear.
Fig. (6.8.) Measurement of the installation dimension of the differential with bearing:
1, 5 - mandrel; 2 - differential assembly with a driven gear; 3 - bearing; 4 - outer bearing race
Note
Check and adjust the lateral clearance in the meshing of the gear wheels of the installed new final drive set after adjusting the position of the gears.
The lateral clearance is checked with an indicator, the stand of which is attached to the axle housing in a direction perpendicular to the tooth surface of the driven gear when attached to the casing of the indicator stand. Check the clearance on three to four teeth, evenly spaced around the circumference. The spread of the clearance values should not exceed 0.05 mm. The normal side clearance should be between 0.15-0.25 mm. If the side clearance is less than the specified value, then the selected adjusting ring should be replaced with a ring of a smaller thickness. It is not necessary to preload the differential bearings when checking and adjusting the lateral clearance.
6. Tighten the adjusting nut 23 until it comes into contact with the bearings and disappears in them.
7. Check the meshing of the main gears by the contact patch, for which paint the teeth of the driven gear with paint (2 teeth in three or four places evenly around the circumference). 8. While braking the drive gear shaft by the flange, rotate the driven gear in both directions until contact spots appear on the gear teeth, as shown in fig. 6.8.
Note
With correct adjustment of the gear engagement, the contact patch should be located in the places of the teeth shown in Fig. 6.8 (item 1).
In case of contact at the top of the tooth (key 2), move the drive gear to the driven gear, increasing the thickness of the adjusting ring, and to maintain the value of the side clearance, move the driven gear away from the driving gear.
In case of contact at the base of the tooth (key 3), move the drive gear away from the driven gear, reducing the thickness of the adjusting ring, and to maintain the value of the lateral clearance, move the driven gear to the drive gear.
Rice. (6.9.) The location of the contact patch on the teeth of the final drive gears:
A - forward side; B - side reverse; 1 - correct location; 2 - the contact spot is located at the apex of the tooth; 3 - the contact patch is located at the base of the tooth; 4 - the contact patch is located at the narrow end of the tooth; 5 - the contact patch is located at the wide end of the tooth
In case of contact at the narrow end of the tooth (key 4), move the driven gear away from the drive gear, reducing the thickness of the adjusting ring, while moving the drive gear to the driven gear to maintain the value of the lateral clearance.
In case of contact at the wide end of the tooth (key 5), move the driven gear to the drive gear, increasing the thickness of the adjusting ring, and to maintain the value of the side clearance, move the drive gear away from the driven gear.
9. Install the retaining plate onto the differential bearing cover.
10. After assembling the final drive, check its heating after making a test drive on the car. If the front axle housing in the area of the drive pinion bearings and differential bearings heats up over 90 ° C, then re-adjust the preload
Elimination of leakage through axle hubs
It will take: new cover bolts (optional), lubricant for fixing threaded connections, sealant, degreaser (white spirit or kerosene).
- Jack up the wheel or lift the car on a lift.
- Remove the hub cover.
- The bolts must be thoroughly cleaned in a solvent and dried.
- Clean the cap and hub in solvent and dry.
- Clean the threads in the hub with solvent and dry.
- Move the cover up to the hub and check that it is tight and not distorted.
- Apply (smear) a thin, even layer of sealant to the cover and hub.
- Align the bolt holes in the cover and hub.
- Apply lubricant to the threads of the bolts to secure the threaded connections, tighten the bolts (without washers).
- Tighten bolts evenly and tighten completely.
- The sealant should creep out evenly around the edges. After it hardens, cut off the excess.
- Do not lower the car on wheels for at least one hour until the sealant hardens.
Filler plug and drain plug
The filler plug of the gearbox tends to sour tightly over time. This is due to the fact that the thread in it is tapered.
Without waiting for this moment, you should unscrew it, clean (wipe) the plug and thread on the gearbox with a degreasing agent (white spirit or kerosene).
Lubricate the thread of the plug high-quality lubricant for fixing threaded connections without regretting the amount of lubricant.
Tighten the plug to such an extent that there is no oil leakage without overtightening.
Replacement of oil seals of the UAZ Patriot bridge
How to replace the rear axle oil seal.
Replacing the axle gearbox oil seal on the UAZ Patriot:
Correctly installed, high-quality oil seals last a very long time.
Never reinstall used, removed oil seals.
Purchase quality oil seals.
If high-quality oil seals quickly begin to leak, then the reason should not be sought in the oil seals, but in the adjustment of the bridge, the fastening and quality of the propeller shaft, crosses, and outboard bearing.
- Unscrew the propeller shaft.
- Unscrew the flange fixing nut (nut of the drive pinion shaft of the rear axle reducer).
- Remove the flange.
- Remove the oil seal from the throat of the gearbox with a flat screwdriver.
- Clean the place where the oil seal is installed with a degreasing agent (white spirit or kerosene).
- Before installation, lubricate the inside of the oil seal, the one that should come into contact with the shaft and oil, with gear oil.
- When installing, an old oil seal is sometimes used as a pressure test. It is advisable to flush such an oil seal so as not to "infect an infection."
- The process of installing the oil seal in place must be accurate, without distortion, both as a result of installation and in the process of pressing.
- After installation, the inner (working) part of the oil seal, i.e. places of friction, lubricate again with the fluid in which it will work - transmission oil.
- Install the parts upside-down. When installing the flange, while tightening the nut, turn it by the flange so that the bearing rollers are in place.
1 - bolt; 2, 33 - spring washers; 3 - driven gear; 4, 24 - semi-axes; 5 - an adjusting ring; 6, 22 - bearings; 7 - spacer sleeve; 8 - outer cage of the outer roller bearing; 9 - roller bearing; 10 - thrust ring; 11 - oil seal; 12 - reflector; 13- flange; 14 - washer; 15 - nut; 16 - bridge housing; 17 - an adjusting ring of the driving gear; 18 - outer cage of the inner roller bearing; 19 - inner roller bearing; 20 - oil deflector ring; 21 - shaft with a driving gear; 23 - differential bearing adjusting nut; 25, 39 - right and left parts of the differential housing; 26 - bolt; 27, 40 - support washers of the semi-axle gears; 28, 43 - semi-axle gears; 29, 45 - axles of differential satellites; 30, 41, 44, 46 - differential satellites; 31, 38 - differential bearing caps; 32 - retainer of the differential bearing adjusting nut; 34, 36, 37 - bolts; 35 - cover of the main gear housing; 42 - the gasket of the cover of the crankcase of the main transfer
UAZ Patriot bridge is regulated selection of adjusting rings and tightening the differential and final drive bearings.
The selection of the adjusting rings ensures the correct meshing of the final drive gears. The correct meshing of the final drive gears is checked by the contact patch.
The correct tightening of the bearings is determined by the total torque, the value of which is measured in Nm. Naturally, in practice, no one is interested in these units of measurement. The process of tightening the bearings is solely determined by the skill and experience of the craftsman. To check the correctness of the bridge setting, special measuring instruments are used.
After repair and adjustment of the UAZ Patriot bridge, it should not "hum" from the very beginning of operation. If in the first days of operation the bridge hums, then after running in the hum will not disappear. During break-in, a serviceable and correctly adjusted axle does not buzz. Without proper repair, "humming" bridges will not hum less.
To check the correct adjustment of the UAZ Patriot bridge, it is not at all necessary to be able to adjust it. Before doing anything, check the axle temperature after driving fast. If the bridge gets very hot, then you can definitely say that it, at least, needs to be regulated. If such a bridge is not repaired, sooner or later it will jam.
1. Unscrew the gimbal from the bridge. On a raised car, rotating the axle flange (the universal joint) by hand in both directions, you can feel the presence of broken teeth, assess the condition of the bearings and other problems.
2. After removing the axle cover, check the condition of the teeth on the main gear and differential by turning the axle. There should be no cracks, workings, roughness in the places of contact spots, cuts and torn off teeth. Assess the location of the contact patch. In the crankcase, you can sometimes find the remains of destroyed adjusting rings and broken elements. These problems do exist. If everything is whole, then the bridge can be adjusted. If there are problems, then ...
3. Check for lateral bearing clearances. If there are gaps, then the bridge must be adjusted until it is jammed.
4. Check the correct engagement of the final drive. To do this, paint the teeth of the main gear with paint from an aerosol can and, turning the bridge in both directions, determine the pattern of the engagement marks. The following figure shows the correct location of the contact patch on the teeth of the main gears of the UAZ Patriot axle.
The following photo shows an example of incorrect adjustment of the main pair and the presence of roughness at the contact points:
After adjusting the rear axle, there should be no axial play in the bearings of the drive pinion of the main drive and in the bearings of the differential of the main drive. Axial clearance in the axle bearings is the main cause of axle noise and jamming due to the destruction of the teeth in the main pair. There are very few craftsmen who know how to correctly adjust the main pair of the bridge. The instructions on the Internet are not very helpful, since the process is iterative, requiring not only ability, but also experience. We specialize in adjusting drive axles. People come to us from other cities on the recommendations of our clients for the bulkhead of driving bridges and checkpoints, including foreign cars. Drive axles, aluminum and UAZ tuning are our competitive advantage.
Change of oil
The UAZ Patriot transmission should be filled with the most quality oil that you can afford. Too little quality can flow through poor quality oil seals.
Very often in the rear axle over time, due to moisture entering it, the oil turns into a thick, non-flowing slurry. A simple oil change in such a bridge does not have the desired effect. If you are unsure, remove the axle and axle cover and clean the axle. Do not have any illusions - if the air vents are not removed, if you drove on water, if a lot of time has passed, etc., then there is no longer oil in the bridge. Moreover, the slurry is not in the gearbox, but closer to the hubs. Those. rear axle wheel bearings are practically not lubricated.
Breathers. Conclusion of breathers into the engine compartment
Breathers on bridges must be led out into the engine compartment so that water does not get into the bridge under any circumstances. This is usually done using brake hoses and brake pipes... It is easier to use oil resistant hoses.
At the end of the tubes under the hood, a plastic filter for fine fuel purification from the classics is installed so that dust does not get into the bridge. In this case, the end of the tube is bent down so that water does not enter the bridge even if the car goes into the water more than the location of the end of the tubes.
On cars with a compressor during extreme operation, excessive air pressure is sometimes created in the transmission - as it were, the bridges, the box and the transfer case are inflated from the inside. This completely excludes the ingress of water and dirt inside and well lubricates the oil seals in places of friction.
Sometimes the end of the tube is fitted with expansion tank with a balloon to create volume. In this case, the connection of the inner space of the bridge with the atmosphere is completely closed. When the volume of air in the bridge changes during heating and cooling, the balloon is inflated or compressed.
If you drove through a ford more than 30 cm deep, then you should immediately (on the same day) change the oil in the transmission - this is the manufacturer's instructions. Draw conclusions.
Wheel bearing adjustment
Adjust the bearings of the wheel hubs of the spicer axle in the following sequence:
- Jack up the vehicle from the side of the wheel whose bearings are to be adjusted.
- Bend back the tab of the lock washer 6, unscrew the lock nut 7 and remove the lock washer.
- Loosen the nut 4 of the bearing adjustment by 1 / 6-1 / 3 turns (1-2 sides).
- Turning the wheel by hand, check the ease of its rotation (the wheel should rotate freely without touching the brake pads on the disc or drum).
- Tighten the wheel bearing adjustment nut. Tightening torque 30 - 40 Nm (3.0 - 4.0 kg / cm). When tightening the nut, turn the wheel to correctly position the rollers on the raceways of the bearing rings and press the key knob smoothly, without jerks.
- Install the lock washer, screw on and tighten the lock nut. Tightening torque 30 - 40 Nm (3.0 - 4.0 kg / cm). Install the lock washer with the inner mustache into the groove of the trunnion. If there are even minor cracks on the tabs of the lock washer, replace the washer.
- Check the bearing alignment after tightening the lock nut. When properly adjusted, the wheel should rotate freely without binding, noticeable axial play, or wobbling.
- Bend one tab of the lock washer to the face of the nut and the other to the face of the locknut.
- Insert the axle shaft of the rear axle or put the clutch for disengaging the wheels of the front axle, clean the threaded part of the bolts from the remnants of the sealant, degrease and apply a new layer of sealant, tighten the bolts.
Finally, check the correctness of the bearing adjustment by observing the heating of the wheel hubs after the vehicle is moving.
If the hub heats up strongly (the hand does not tolerate heating), loosen the nut 1/6 of a turn (1 edge), observing the sequence and rules outlined above.
When checking the bearing adjustment for heating, do not use the service brakes, as in this case the hubs may heat up from the discs and brake drums.
A source
uaz-tuner.ru
kulibinsclub.ru
avtosteh.ru
Cars off-road are well known to the domestic consumer. The manufacturer equips them from the factory with a pair of driving axles at once: rear and front. The main difference between them is that the design of the front is controllable and can be turned on if necessary. Despite the fact that the front axle of the UAZ Patriot was developed back in the 90s, it is actively used to this day due to its technical characteristics.
Before starting to disassemble the device and the reasons for repairing the front axle, it is necessary to dwell on its advantages in operation. Let's dwell on the following points:
Video review of the UAZ Patriot front axle design:
Description of the components and design diagram
The device of the front axle on the Patriot should begin with a description of the main elements and components. Among them:
- drive shaft and drive gear;
- driven gear with a large number of teeth;
- bridge housing;
- roller bearing;
- flange;
- nut for adjusting the differential bearings.
As for the difference in the structure of the structures of each of the leading bridges, there are no particular fundamental differences here either. At the front axle of the Spicer Patriot, power and torque are transmitted through a differential and final drive. The beam is hollow, and a pair of axle shafts are placed in it, which account for rotation from the driven gear.
The main types of malfunctions and their causes
Let's look at possible malfunctions lying in wait for the driver during the operation of the UAZ Patriot, associated with the construction of the bridge. As a rule, they are associated with excessive wear or operation in difficult conditions, or natural aging of metal components and can be expressed in the following symptoms:
Repair of key types of UAZ front axle breakdowns
Many types of Patriot front axle repairs can be done independently in a garage. This will help the following simple instruction, which concerns the most frequent types of repair work. Consider the adjustment of the bearing clearance, which must be performed correctly in order for this unit to function for a long time. First, we select the diameter and thickness of the ring, which must exactly match the bearing of the drive shaft from the main gear.
During the rotation of the shaft, the moment is measured, the value of which should not exceed 1-2 Nm. In approximately the same way, the adjusting ring for the driven gear is selected. When installing differentials, the clearances should be set using adjusting nuts - this is clearly demonstrated by the scheme for repairing the front axle of an SUV. After carrying out the above manipulations, it remains to check the absence of backlash and check the contact areas of the gear teeth.
Another common case is the replacement of the drive pinion oil seal in the final drive. First, the flange is removed from the machine by unscrewing the mounting bolts, after which access to the gland itself is freed. The damaged element is removed from the seat and replaced with a new one by pressing it into its original place.
It is more difficult to dismantle the main gear - for this you must first hang out the front part vehicle... By opening the drain neck, we remove the entire volume of grease from the system. First, the left and right axle shafts are removed, and then the tie rod end. After disconnecting cardan transmission the main cover is also removed in sequence. Along the way, with the drive gear, the differential bearing caps are also removed from their places. Next, the drive gear with the shaft and bearings is dismantled.
Video advice on repairing the front axle assembly of the UAZ Patriot:
Monitoring and scheduled maintenance
Experienced SUV owners pay particular attention to regularly checking the condition of the oil seals. If it is necessary to carry out replacement work, new oil seals must be lubricated with Litol-24. The design of the front axle allows such repairs to be carried out when necessary.
The construction of the Spicer bridge, which is installed on, is structurally simple enough. Thanks to this, both maintenance and repairs can be performed independently, with the main tools in the arsenal. Long-term operation is always based on regular scheduled maintenance.
Particular attention should be paid to monitoring the lubricant level in the axle gearbox and replacing it. If you have the slightest suspicion about the appearance of extraneous noise or other symptoms, you should adhere to the repair sequences described here.
Video review of the front axle of the UAZ Patriot SUV:
Bridges UAZ Patriot their device and maintenance is a rather interesting topic among UAZ producers. Especially many are worried about front axle UAZ Patriot
, because structurally the front axle is more difficult to repair and install. Today we will tell you more about the bridges of the modern Patriot.
First, a little history of UAZ driving axles and the arrangement of these transmission elements. Initially, the bridges of UAZ SUVs were “military” and “collective farm” ones, they were quite different in their arrangement among themselves. Among lovers of off-road vehicles, it is the "military" types of bridges that are valued. But on the current UAZ Patriot, completely different bridges are installed, which have a number of features, although some parts are interchangeable with old bridges.
Modern Patriot bridges of the "Spicer" type now they come with a track increased to 1600 mm. After all, the old bridges were only 1445 mm and did not fit the rather wide Patriot. Also, the main gear housing was changed in the design, which is closed by a removable steel cover, and to access the main gear and differential, it is no longer necessary to remove and disassemble the axle, you can simply remove the cover.
The device of the front and rear axles "Spicer" are similar, and we will talk about the features below. So, the bridge case
consists of a one-piece cast crankcase of the main gear, casings (stockings) of axle shafts pressed into it and a stamped cover. The absence of a connector in the transverse plane of the bridge gives the structure high rigidity (continuous type of bridge). Placing the main gear and differential in a single crankcase ensures durability and high precision of the gearing of the teeth of the main pair.
A schematic of the Patriot front axle is shown in the first picture at the very top of the article. The main feature of the bridge can be considered the presence of constant velocity joints. After all, the front wheels, in addition to rotation, should also turn. Initially, Weiss type CV joints were used, but they were abandoned. Due to the design features, the steering angle did not exceed 27 degrees, which affected the vehicle's maneuverability. Therefore, new CV joints of the "Bearfield" type are now being installed, which provide a 32-degree turn and more durable, due to a more uniform load on the elements of the pivot joint.
Only "SHRUS-4" is used as a lubricant for the UAZ Patriot SHRUS, the previously widely used LITOL-24 grease is no longer suitable for these purposes.
The Patriot rear axle can be seen in the schematic below.
Usually rear axle"Spicer" does not cause problems for SUV owners. The main thing is to constantly monitor the oil level in the axle housing. Since the bulkhead of the axle or the replacement of the final drive with a differential is a lottery. It is quite easy to run into raw metal and then drive with a constantly humming transmission.
The main tips for using Patriot bridges are quite simple - you should not drive with the front axle connected on a dry, good road, this leads to increased consumption fuel and wear of handouts. You should not allow one of the wheels to slip for a long time, if you are stuck, this can lead to accelerated wear of the axle. But when driving with an ambient temperature of minus 30, it is better to connect the front axle.
Recall the serial UAZ Patriot does not have a cross-axle differential lock... That is, if the front right wheel is stuck in the mud, and the front left wheel is hanging in the air, then only the one that is free will rotate. So it is with the rear wheels. In order not to get into a stupid situation, real off-road lovers re-install the interwheel lock on their own. Today there are several types of locks for every taste and wallet.
