In detail: do-it-yourself repair of the rear axle of the UAZ patriot from a real master for the site my.housecope.com.
The main gear is removed for repair or replacement.
You will need: key "10", socket head "19", "27".
1. Place the stops under the front wheels of the car.
2. Remove the plug from the rear axle housing and drain the oil.
The UAZ Patriot car is equipped with all-wheel drive, which makes it possible to call it an SUV. Torque is transmitted from the engine to all four wheels via the rear and front axles. UAZ Patriot, like the UAZ-3160, is equipped with single-stage drive axles. In this article we will take a closer look at the bridge, which is called the "Spicer". The designs of the front and rear axles are similar in design.
The rear axle structure is presented in the form of a rigid steel hollow tube. The ends of this tube are fitted with wheel hub bearings. The main pair and differential (reducer) are located inside the drive wheels. In this case, there is a transfer of torque from the transfer case, through the cardan to the gearbox, through the axle shafts to the hub and to the wheels, respectively. Thus, the movement of the UAZ-3160 and UAZ-3163 vehicles is carried out. In this material, we will pay attention to topics such as the rear axle device, its malfunctions and repair paths.
Structurally, the rear axle of the UAZ Patriot SUV looks like this:
The Spicer Bridge consists of the following main parts:
- differential;
- two axle shafts;
- the main pair.
The internal structure of the rear axle, or rather, its gearbox, has the following form, shown in the diagram below.
All these parts are located in the bridge structure. The crankcase cover 35, together with the gasket 42, ensure the tightness of the internal structure of this design. The inside of the device is filled with a lubricant - oil. The rotation of the gears and the friction of the bearings require careful handling, which is ensured by the lubricant. The owner of an SUV can only control the oil level in the axle, which can decrease through deterioration of the tightness. The device of the UAZ-3163 gearbox is not particularly difficult and allows you to repair the product at home.
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If the gearbox fails, the vehicle cannot be operated and an appropriate repair is required. Driving with the front axle connected is allowed only when overcoming any obstacles, and driving on an asphalt road requires disabling it using the installed hub clutches.
The lack of a cross-axle differential leads to an increase in the wear of the rear-wheel drive device, therefore, in frequent cases, the owners of the UAZ-3160 and 3163 resort to self-modernization of the car.
There are the following types of malfunctions of the rear axle "Spicer" on the UAZ Patriot SUV and methods of their elimination.
- Detection of oil leaks that fill the device, as a result of which minor repairs are required to replace the oil seals or gaskets.
- The gearbox makes excessive noise and knocking, which leads to the need for repairs. In this case, extraneous noise can be emitted due to bearing wear or in the absence of oil in the axle tank. Lubrication helps eliminate this type of problem.
- Noise and knocking when cornering is caused by wear on the teeth of the satellites or side gears, which requires adjusting the gap or replacing defective parts.
In fact, the rear axle gearbox has many more malfunctions, which are often detected only after opening the crankcase cover. In frequent cases, the crankcase cover is deformed by hitting an obstacle when driving off-road. In this case, the integrity of the cover is violated, which leads to the penetration of various foreign substances into the device, or rather, into the gearbox, such as dust and water. In this case, these negative third-party substances cause many malfunctions: from the appearance of an oil leak to the jamming of the gears of the gearbox. Many owners, when operating a car in harsh off-road conditions, resort to replacing the standard crankcase cover with a special reinforced one. The reinforced cover is made of cast iron and bronze alloys. In this case, the strength of the axle housing cover increases tenfold. The reinforced crankcase cover covering the gearbox is as follows.
The cost of such a device is about 5 thousand rubles, which not every regular driver can afford. To replace the cover, it is necessary to drain the oil and replace the standard part with a reinforced one, not forgetting to replace the gasket.
Often, a knock in the bridge structure is the main factor in the appearance of a breakdown, and indicates that the product needs to be repaired. If there is a knock on the bridge, then it is prohibited to operate the car until the cause of the noise is eliminated or a qualified maintenance is carried out. If the knock cannot be determined on your own, then it is better to entrust it to an experienced specialist who can fix the breakdown in a matter of minutes or hours.
In frequent cases, a knock indicates the following causes of malfunctions in the rear axle of the UAZ Patriot car:
- Increased clearance between the final drive gears.
- Loose rear suspension bolts.
- Increased clearance between pinion gear and flange.
- A knock may also indicate that there is a malfunction of the propeller shaft, in particular, there is a backlash in the crosspiece.
If the UAZ Patriot SUV is operated over rough terrain, then the knock that appears on the bridge after the next arrival should not cause severe frustration, since this is a normal phenomenon that requires an experienced craftsman to intervene in the gearbox design.
Removal and installation of the rear axle "Spicer" is carried out in the event of wear or damage to the integrity of the structure. But, as practice shows, the rear axle on the UAZ-3160 and 3163 lasts quite a long time, which is not to say about the gearbox, although periodic maintenance of the axle gearbox also allows you to extend the service life of the product. Lubrication of rotating parts is especially important. Untimely replacement of grease or its absence leads to not very pleasant consequences that require repair work with a significant investment of capital. Therefore, in order to avoid such unpredictable troubles, you should periodically check for the presence of lubrication and prevent the entire structure of the unit.
At this stage, we can summarize and conclude that, like any car with rear-wheel drive, the UAZ Patriot SUV needs timely care and elimination of breakdowns, and only in this case it will be possible to prevent a serious malfunction on the road.
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- Arrangement and repair of the rear axle UAZ
- Rear axle device UAZ
- Rear axle adjustment
- Possible causes of malfunctions and their elimination
- Increased driving noise
- Knock when pressing the throttle pedal
- Oil drips
- How to remove the rear axle UAZ
- Assembly and disassembly of the rear axle for UAZ
Rear axle is a machine mechanism that connects the wheels of the rear axle and serves as its support. The axle is attached to the frame of the machine or to its body by means of a suspension.
The UAZ rear axle device includes many elements. The main parts of the structure: differential, axle shafts, gearbox.
Differential according to the device, it can be with a single main gear and with an additional wheel drive. Wheel adjusters transmit torque to the hubs, they are located at the ends of the shaft. The wheel bearings are supported by the governor housing.
Gearboxes designed to provide ground clearance, look like meshed gears. main gear consists of a tapered tooth, a bearing assembly, a gear and a drive with four satellites... The satellites provide smooth gear shifting.
Crankcase - container for lubricant, has two holes. Lubrication is needed for the wheel adjuster. Rear converter support includes cover, dirt guard, axle housings. The driven rear gearbox is located on the shaft. The reducer is fixed in the grooves of the shaft, its ends are equipped with couplings.
Rear-wheel drive parts are adjusted in the event of breakage and replacement. In this case, it is especially important rear axle reducer, its inspection and adjustment.
When adjusting, the following actions are performed: check the end play of the differential between the gearbox and the rings (required size 3.5 - 4 mm), after the differential is covered with a gasket, a reservoir cover. The bearings roll into the correct position.
The bearings of the gear wheel of the rear gear are inspected: the parts of the guide are fixed to the driven gear, the tail ends are rubbed, the roller assemblies and gaskets between the rings are checked. The fastening of the main gear is checked.
A set of gaskets should be placed between the bearing assembly valve, wheel and support. The gap (set thickness) should not exceed 1.3. The bearing assembly with the collar is bolted. A differential is installed in the oil pan, then the oil seals. Inspect the cardan flange and oil outlets. Replace all worn parts with new ones.
There can be several reasons for hearing noise when driving or when turning the car. Carefully inspect the rear axle of the UAZ, all the details of the device.
The teeth of the final drive gears are worn out. In this case, it is not recommended to adjust the position of the parts: the gear may jam. Defective parts must be replaced.The problem is in the gear or differential pinion bearings. In both cases, the details change.
Loose drive pinion mounting with differential. Tighten the fastening bolts.
Drive gear bearings are loose... Tighten the nut until it stops.
Poor meshing of the final drive gears... If there is no wear on the teeth, adjust to the contact mark.
Lack of oil in the crankcase. Top up the required amount.
In case of creaking and noise when cornering or when slipping, inspect all parts of the differential, replace the unusable with new ones. Strong knocking when you press the pedal, control throttle valve, indicates wear of the main gear or differential parts, they need to be replaced.
If the splines of the axle shafts are unusable - replace the axle shafts.
There are several reasons for oil leakage.
Parts of the propeller shaft are worn: seal or flange... Details change.
Excess oil in the crankcase. Check the lubricant level, drain the excess.
If the safety valve is dirty - it needs to be cleaned.
Deformed gasket and poor attachment of the crankcase cover... The gasket must be replaced, the mount must be tightened.
The work on removing the UAZ rear axle for repair is carried out on a lift, preferably together. The sequence of actions is as follows:
- Loosen the rear wheels, place a support under the frame under the rear axle so that the rear of the machine hangs.
- Drain the oil and remove the universal joint, then the shock absorbers.
- Place a jack under the beam.
- Remove the spring together with its parts.
- Further dismantling of the wheels. Roll the cart under the bridge and roll it out from under the car.
After inspection and repair, the unit is assembled. The ladder attachment is tightened after the wheels are installed.
To assemble the rear axle, you must carefully follow the following sequence of steps:
- Install a set of shims between the front bearing cover of the main gear and the crankcase.
- Install the cover and collar assembly and tighten with the bolts.
- Put the flange and washer, tighten the nut until its holes coincide with the slots of the gear shank, then you need to cotter it.
- Install the differential with all its parts in the axle housing, a gasket is needed between the housing and the cover. The cover must be in such a position that the spring cushions are in the upper position relative to the axle.
- Tighten the fasteners.
- Turn the pinion gear to see if it is sticking in the already assembled axle.
Adjustments and inspections must be carried out regularly, without leading to repairs. Check seals, oil level, valve cleanliness, all parts are secure.
Eliminate gear backlashes in time. The good condition of your car is your safety.
We remove the rear axle for replacement or repair.
For work, you will need keys for 17, 19, socket heads, a jack, penetrating liquid WD-40.
We prepare the car for the job. We install the car on a lift or on a viewing ditch.
We loosen the tightening of the rear wheel nuts.
Disconnect the brake hose from the pipe tee located on the rear axle.
Disconnect the rear propeller shaft flange from the rear axle flange and move the propeller shaft to the side.
Unscrew the wheel speed sensor mounting bolt, and move the sensor to the side.
Keeping the bolts from turning, unscrew the lower mounting nuts of both rear shock absorbers and remove the bolts.
Unscrew on both sides four nuts of the ladders securing the rear axle to the spring and remove the ladders.
Raise the rear of the vehicle and roll out the rear axle from under it.
Unscrew the wheel nuts and remove the wheels.
Install the rear axle in the reverse order of removal.
After installation, bleed the air from the rear brake circuit.
- Conclusion of breathers into the engine compartment.
- Replacement of pivots with bronze or bearings.
- Increased castor angle.
- Replacement of oil seals.
- Replacement of wheel bearings, their lubrication and adjustment.
- Replacing the oil with a better one.
- Installation of interlocks with pneumatic drive, electric drive, mechanical drive, self-locking.
- Installation of a reinforced gear cover.
- Welding of joints by welding.
- Precise adjustment of the main pair and quality differential bearings.
- Replacement of the bridge with a wider gear axle with high ground clearance (military bridge).
- Replacing the main pair with a different gear ratio.
- Change of oil.
- Replacing the grease of the wheel bearings.
You will need: 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 cap and hub.
- Align the bolt holes in the cover and hub.
- Apply lubricant to the threads of the bolts to secure the threaded connections and 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.
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 plug thread with a high-quality grease to fix the threaded connections without regretting the amount of grease.
Tighten the plug to such an extent that there is no oil leakage without overtightening.
UAZ Patriot bridge is regulated selection of adjusting rings and tightening the differential and final drive bearings.
The selection of 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.
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 axle bearings is the main cause of axle noise and seizure 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.
The UAZ Patriot transmission should be filled with the highest 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 have been driving 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.
We recommend that absolutely everyone do this revision, especially since the costs for it are relatively small.
Breathers on bridges must be brought 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 pipes 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 lubricates the oil seals well in places of friction.
Sometimes an expansion tank with a balloon is installed at the end of the tube 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.
Immediately after purchasing the UAZ Patriot, we recommend replacing the grease in the wheel bearings by making the correct adjustment. For used, if necessary, replace the bearings.
- 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.
- 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 wedging is the presence of an axial clearance in the bearings of the main gear drive gear or the presence of an 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. The bridge can jam if it gets very hot.
- One should not assume that the bridge should hum or work poorly just because it is. then there are many misconceptions.
- Correctly adjusted serviceable bridge can and should work ideally and for a long time if used correctly.
- If, over time, sounds appeared in the rear axle, this means that a problem has arisen that will not disappear over time.
- On new bridges (cars), the first 2500 km are run-in. The manufacturer claims that the rumble of bridges is allowed at this time.
- If a new or rebuilt bridge whistles, then the main pair must be correctly adjusted.
New in UAZ Patriot 2018 (UAZ Patriot 2018) model year. Restyling UAZ Patriot 2018 (UAZ Patriot 2018):
- New radiator grille and external lighting technology.
- Glazed glass.
- Fastening the bumpers to the body, not to the frame.
- New side steps with volumetric recesses that do not get damaged when driving off-road.
- New spare wheel container.
- Rear anti-roll bar.
- Maintenance-free cardan shafts with extended service life.
- Multimedia system with 7-inch touchscreen display, reversing camera and Navitel navigation system.
- New instrument cluster with outside temperature sensor and trip computer.
- Driver's seat with a wider range of adjustments.
- The backrests of the front seats can be folded out flush with the back row cushion, creating a berth.
- The rear sofa has been moved back 8 cm.
