Where is the front axle located and how is it arranged on the UAZ Patriot?

This article describes in great detail the UAZ Patriot front axle of the Spicer type. The structure and diagram of the front axle of the UAZ Patriot car is presented. Here are the design drawings of the axle shaft, shank, CV joint, hub and differential of the UAZ Patriot front axle. Detailed diagrams for disassembling and assembling the front axle components of the UAZ Patriot SUV are posted.

Various front drive axle designs have been and are being installed on the legendary UAZ Patriot SUV. From the very beginning of production, the Patriot was equipped with a front axle with spring suspension. In its development, the front axle of the UAZ Patriot has undergone several modifications. This SUV unit was increased in length and the design of its steering knuckle was changed several times. This article presents a front axle with a closed steering knuckle and a kingpin adjusting pin.

View of the front axle of the UAZ Patriot model Spicer

Eaton differential with electric locking on UAZ

On the UAZ Patriot 2022 model year, the Plant has provided the possibility of installing an Eaton rear cross-axle lock. This is an ELocker electrically locking differential. Exactly the same differentials are already installed on GAZelle and Sobol (since 2012).

The differential with electric locking EATON is activated forcibly by using the button located under the washer to turn on the transfer case.

It is recommended to activate the locking when the vehicle speed is no higher than 5 km/h. When one of the drive wheels slips, the differential allows you to lock the axle 100%. The differential can be turned off manually or automatically. The EATON electrically locking cross-axle differential is automatically disabled at a speed of 30 km/h; this function is programmed in the engine control unit.

Front axle structure of the UAZ Patriot

Knuckle front axle UAZ Patriot

Shank and differential of the front axle UAZ Patriot

Diagram of the front axle hub of the UAZ Patriot

Frequent malfunctions

The design of the front drive axle is highly reliable; possible malfunctions arise due to natural wear of rubbing parts or violation of operating conditions. Gearbox failures are associated with loss of crankcase sealing or damage to gears. The car owner can independently find the cause of the breakdown and carry out repairs in a garage.

High noise level

An increased noise level indicates a decrease in oil level and mechanical wear of the rolling bearings or gears of the main pair and differential. If adding lubricant does not reduce the operating noise, then it is necessary to disassemble the unit and replace worn elements.

After reassembly and restoration of the oil level, the functionality of the Patriot front axle is checked.

Noise during operation of the bridge occurs due to incorrect adjustment of the main gear gears. To restore normal operating conditions, the position of the parts is adjusted (using steel spacers), but if the teeth are damaged or worn, it is impossible to ensure the required contact patch. In this case, a complete replacement of gears is carried out; installing gears from different sets is strictly prohibited.

Oil leakage

Oil leakage from the Spicer UAZ Patriot axle occurs through the gasket between the cover and the gearbox housing, as well as through the sealing gland. The cause of the defect is wear of parts or damage to elements during installation or maintenance of the vehicle. To restore normal operating conditions, it is necessary to replace damaged parts; it is permissible to apply a sealant to the surface of the gasket. After repairs, it is necessary to restore the transmission oil level in the front axle gear housing.

Grease drying out

During operation of the machine, degradation of the lubricant located in the axle housing occurs. At high temperatures, the oil evaporates, and when overcoming water barriers, water enters the cavity. To check the lubricant level, use a control hole closed with a screw plug. If the owner regularly overcomes water obstacles, it is recommended to install extension hoses on the ventilation ducts. The lines are routed under the hood of the car, reducing the risk of water and dirt getting into the crankcases.

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Node jamming

Jamming of the gearbox occurs in the case of increased axial clearance in the bearing supports on which the drive shaft of the main pair rotates. Due to the movement of the axis, the contact patch between the gears is disrupted, which leads to wear and destruction of the teeth.

During operation, it is necessary to periodically check the condition of the bearings by rocking the drive axle by the flange intended for attaching the propeller shaft.

Front axle gearbox UAZ Patriot

*- A ring from the range: 3160-2403090 to 3160-2403107 is installed by choice

Main types of faults and their causes

Let's look at possible malfunctions that await the driver when operating the UAZ Patriot, related to the design of the bridge. As a rule, they are associated with excessive wear or operation in harsh conditions, or natural aging of metal components and can be expressed in the following symptoms:

1. An increase in the noise level in the operation of the axle, which can be caused by the failure of the differential bearings, their incorrect adjustment, or an insufficient level of lubrication in the oil pan.
2. The occurrence of knocking noises when the car starts moving is most often caused by wear of the satellite axle.
3. The operation of the Patriot's front axle may increase noise during acceleration and/or braking. This is usually due to poor clearance of the main gear gears or poor engagement. Another reason for the phenomenon may be increased clearances of the bearings themselves.

• A decrease (loss) in oil level is detrimental for a number of reasons. Firstly, the bridge seal immediately loses its elasticity. Secondly, the bridge cover holds worse, and the seals of the internal hinges wear out.
• If noise is observed while cornering, then most likely we are talking about wear on the CV joints.

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Front axle shank UAZ Patriot Spicer type

Diagram of the UAZ Patriot front axle shank

* — As part of the front axle

*1 — As part of the front axle

*2 — A ring from the range 3160-2403090 to 3160-2403105 is installed according to choice

*2 — The kit consists of:

• 31603-2402017 — Drive gear for the main drive of the front axle;
• 31603-2402060-10 — Driven gear of the front axle main drive.

Adjusting the gaps.

Axial clearance is the most common problem that arises during vehicle operation. This is due to severe wear of the gear teeth, which over time can lead to jamming of the bridge.

You can check the condition by shaking the drive gear by the flange.

To fix this problem, you need to properly tighten the flange nut. This may require a little force as there is a slight core applied to it. You should tighten it until the gap goes away.

Front axle hub for UAZ Patriot model Spicer

see also

Comments 17

If you don’t change anything in the main pair, then no adjustment is needed.

The question is, why did you decide to switch from bearings?

They didn’t live up to expectations (it took about 15 thousand km, and they pulled it up and injected it in time. Maybe the bearings are made of poor quality.

The rollers rivet nests into the cups, causing play to appear. No matter how much you tighten, the play will only increase, because... The contact of the roller with the cup is linear, and not superficial, as on bronze. I understood this immediately as soon as I saw and felt the worn out bearing pins that had been removed.

They didn’t live up to expectations (it took about 15 thousand km, and they pulled it up and injected it in time. Maybe the bearings are made of poor quality.

I've been riding bearings for many years now and have never changed them. Ugh, ugh

In general, the diff bolts were unscrewed and there were no signs of it; as a result, a piece of the gearbox housing broke off.

this is sad (okay, I climbed at home, not in the forest or on the highway))

So he took me out of the forest 200 km away. from home, and for another month I drove without a front end, wounded but alive.

Steering knuckle of the front axle UAZ Patriot model Spicer

Axle shaft of the front axle UAZ Patriot (CV joint) of the Birfield type

Axle shaft (steering knuckle joint) of the front axle UAZ Patriot model 3162-2304061 Bierfield type left:

The length of the axle shaft (steering knuckle joint) of the UAZ Patriot front axle (left) brand 3162-2304061 is 1114.7 mm.

Axle shaft (steering knuckle joint) of the front axle UAZ Patriot model 3162-2304060 type Birfield right:

The length of the axle shaft of the UAZ Patriot front axle (right) brand 3162-2304060 is 718.7 mm.

Left and right steering knuckle joints, Beerfield type, brands 3162-2304061 and 3162-2304060, are used for UAZ-2363 Pickup, -3162 Simbir, -3163 Patriot vehicles with Spicer axles 1600 mm long.

Equipment

1. Inflating wheels on the move;
2. Reinforced loaded hubs (quarter-axle diameter 50 mm);
3. Kingpin on cone bearings;
4. Disc brakes.

Additional equipment:

1. Wheel differential lock.

Portal bridges in comparison with other types of tuning

Such common types of tuning as body lift and suspension lift do not provide a significant increase in ground clearance and have a negative impact on the wear of parts of your car.

You need to know that only the installation of portal axles will improve the consumer properties of your car without making significant changes to the original factory design.

Front axle UAZ Patriot 2022

General view of the front axle of the UAZ Patriot 2022 Diagram of the front axle of the UAZ Patriot 2019

Diagram of parts of the front axle UAZ Patriot 2019

Cross-axle differential device with electric locking EATON

By pressing button , the driver supplies current to an electromagnet , which is rigidly fixed in the rear axle housing using a bracket. The magnetic field attracts a ring with profiled grooves (rotary plate) to a stationary electromagnet, which rotates along with the differential housing. The ring “slows down” and, with the help of its profiled grooves, moves the pushers along with locking clutch the axle gear through its internal cutouts . The lock has turned on!

When the voltage is removed from the electromagnet, the rotary plate is released, the pushers stop acting on the clutch, and the return spring disengages the clutch from the axle gear.

Source

Adjusting the tightening of the ball pins of the front axle steering knuckle

The steering knuckle ball pins are adjusted at the factory with a preload along the common axis of the pins.

When operating the front axle of a UAZ with gaps in the kingpin assemblies, it leads to premature failure of the upper kingpin liner.

Adjust the axial clearance in the ball pins in the following sequence:

1. Place chocks under the front and rear wheels;
2. If you are adjusting the upper ball kingpin, place a stop under the lower kingpin. This will relieve the load on the top kingpin and make it easier to adjust.
3. Unscrew nut 22 and remove lining 21 with gasket 9;
4. Using a special wrench, tighten the clamping sleeve 10 until the gap is eliminated;
5. By turning the key 10-20°, tighten this bushing to create a preload along the common axis of the pins;
6. Mount cover 21 with gasket 9;
7. Tighten nut 22 with a torque of 80-100Nm (8-10kgfm);
8. If the axial gap is not eliminated, then tighten the clamping sleeve again by turning the wrench another 10-20° and tighten nut 22 with the specified torque;
9. After this, check the equality of dimensions A and B from the ends of the steering knuckle housing 8 to the ball joint sphere 17
   

   The discrepancy between dimensions A and B is allowed to be no more than 0.2 mm. To achieve the required accuracy of dimensions A and B, it is necessary to carry out measurements in plane B. The torque of rotation of the ball joint 17 (or the body 8 of the steering knuckle, if the ball joints were not disconnected from the axle housing) in any direction relative to the common axis of the pins should be within 10- 15 N.m (1.0-1.5 kgf/m). If these parameters are not achieved, the adjustment must be repeated.

Rules of service

Axle maintenance consists of periodically checking the level and changing the oil in the crankcase (every 45 thousand km). It is recommended to monitor the condition of the sealing elements and parts holding the beam to the vehicle. It is also necessary to promptly adjust the axial clearances, which change due to natural wear of gears and rolling bearings. Additionally, the gap in the steering knuckle pins is eliminated and the toe angle is adjusted.

The old oil is drained after the crankcase has warmed up while driving. The housing design includes a threaded plug; a container is placed under the hole to collect waste liquid. It is necessary to wipe the surface of the plug from particles formed when the gears wear out (a magnet is provided in the design of the part). Oil is filled through a control hole closed with a threaded plug. The normal level of lubricant is located near the bottom edge of the hole.