Knuckle "UAZ Patriot": device, characteristics and purpose

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:41

The unit that is part of the steering knuckle on the UAZ "Patriot" is called the ball pin. This spare part of the vehicle takes on the entire load exerted on the suspension of the car. In addition, it is the king pin that absorbs all the shocks while driving the jeep on rough roads and off-road.

During operation, many motorists notice that this part of an SUV quickly fails even with careful operation and driving only on smooth asph alt. As a result of a defect in the front suspension, gaps and wheel play appear. This situation can be corrected by a major overhaul of the steering knuckle on the UAZ Patriot.

UAZ front axle device

UAZ "Patriot" vehicles are equipped with a combined front axle of the "Spicer" type with a gauge of 1.6 meters and a gear ratio of 4.111 or 4.625, depending on the modification of the SUV. Absolutely the same device is installed on machinesUlyanovsk Automobile Plant brand "Cargo" and pickups.

The front axle is both driving and steering. Such a device consists of a hollow beam, inside which two devices are compactly placed:

1. Differential.
2. Main hypoid gear.

Also, two steering knuckles (right and left) are installed on the front axle, they serve for the convenience of driving.

Signs of a bad steering knuckle

Quite often, on UAZ Patriot cars, such an important element of the front suspension as the steering knuckle fails. Over time, it undergoes deformation, the ball joint fails.

Repair of the steering knuckle on the UAZ "Patriot" must be carried out if:

1. The oil seal and liners of this assembly were replaced.
2. The kingpin is worn out.

Often the steering knuckle fails as a result of poor-quality selection of component parts installed during its repair. For example:

• support diameter larger than hemisphere inserted into it;
• thickness of the stuffing box is less than the seat designed to press it in;
• The bushings are not thick enough to seal the mechanism, resulting in road dirt and dust getting into the steering knuckle.

Prevention and repair of the front suspension

You can replace the steering knuckle with the UAZ Patriot on your own in a warm garage equipped with a pit or a car lift. Whereinthe cost of spare parts will depend on which spare parts were purchased at the auto shop - original ones made at the Ulyanovsk Automobile Plant, or more budget ones made in China.

If the owner of an SUV has little experience in car repair and a minimum set of tools, then having studied the operation manual for the UAZ Patriot car, he can independently repair the steering knuckle on his car. This will allow him not only to save a large amount of money, but also to understand how the design of the front suspension of his SUV works.

To keep your car in working order, the car owner needs to regularly carry out preventive measures, which include an external inspection of the bushings of the left and right steering knuckles on the UAZ Patriot, as well as identifying the presence of wheel play on the front axle of the jeep.

Safety regulations and preparation for repairs

Before repairing the front suspension, the master needs to know all the features of repairing a domestic SUV, as well as strictly observe safety precautions during the work. Before disassembling the steering knuckle on the UAZ Patriot, remember:

1. You must not put the vehicle on the front wheels if the drive shaft is not attached to the hub. Otherwise, the wheel bearings may be damaged. If the machine needs to be moved to another place for a short distance, then it is imperative to install the shaft in the hub, and then fix it with a nut.
2. Before you start repairing the steering knuckleon the UAZ "Patriot", you should raise the handbrake lever to the maximum upper position.
3. After the front of the jeep is jacked up so that its wheels do not touch the floor, the car body must be fixed with stops. After that, you should make sure that the mount is installed securely, the possibility of moving and breaking the car is excluded.
4. In the event that the suspension is fixed on the machine with Nyloc nuts, they must be replaced with newly purchased ones. This must be done, since these hardware have a special coating that prevents them from being dismantled. Once removed, the nuts will no longer be reusable.
5. It is necessary to put stops under the rear wheels, which will prevent the vehicle from an arbitrary slope.
6. Depending on the model of the UAZ "Patriot" car and its modification, the fist of the rotary mechanism can be of two types. The first type of spare parts has solid hubs, while the other has hollow ones. The latter have small holes on the body.

Removing wheels and brakes

Before proceeding with the direct repair of the steering knuckle, the mechanic needs to remove the wheel, and then disassemble the brake mechanism of the SUV. To properly unscrew the wheel from the UAZ, you should follow the step-by-step instructions that are posted in the article:

1. The decorative cap is removed from the wheel, and then the bracket in the form of the letter R is removed. After that, you can pull out the headblocking device.
2. On the drive shaft, you need to unscrew all the nuts that are screwed onto the hub studs. The wheel can then be easily removed from the vehicle.
3. If the car is equipped with a system that prevents the wheels from completely locking during braking (ABS), then disconnect the sensor contact. It is located on the wheel.
4. Next, you need to unscrew the nuts securing the drive shaft and remove this mechanism.
5. Then you need to remove the brake caliper, which is attached directly to the steering knuckle with two bolts. They must be unscrewed and then disconnected from the brake disc of the machine.
6. The next step during disassembly of the front suspension is to remove the brake disc, but before that it must be marked with chalk or paint in order to properly install it during assembly after a successful repair of the steering knuckle.
7. To carefully remove the fist from the front axle of the car, you must use a special tool to compress and fix the suspension springs with cables specially designed for this operation.

The process of compression and fixation of the springs is as follows:

1. The cable must be inserted into the hole on the top of the stabilizer bar.
2. Next, you need to turn the steering wheel to the side so that it is convenient for the master to insert another cable into the second hole in the rack.
3. The two free ends of the cables must be hooked onto the bottom edge of the cup.
4. The upper ends of the cables must be securely fixed by screwing into the bolt holessize M6.

How to disassemble the steering knuckle?

After the steering knuckle appeared in the field of view, it is required to dismantle the anti-roll bar. It is fixed with just one bolt to the suspension arm. Next, you need to remove the tie rod, which is installed directly on the knuckle with one small nut. After unscrewing this hardware, it is necessary to carefully pull out the ball joint, using a special tool that serves to extract the joints from the steering knuckles.

Next, you need to dismantle the hinge pin, for which the locksmith needs to unscrew the hinge nut that secures the spare part to the lever.

After the trunnion is removed, it is necessary to unscrew the fasteners on the steering knuckle strut. It is worth remembering that all the removed hardware is no longer suitable for further use, it is necessary to replace them during the subsequent assembly of the car suspension.

Next, you need to insert the lever into the groove on the fist. Then you can safely disconnect the fist from the rack using a special puller. To successfully remove the part, just turn it 90 degrees and pull it towards you.

After removing the steering knuckle on the UAZ Patriot, you need to disconnect it from the shaft. After that, the shaft must be attached to the frame of the jeep with wire.

Fist assembly after repair

After the steering knuckle of the UAZ "Patriot" car was repaired,it must be installed in reverse order. It is better to replace all hardware, since hidden damage may form on them during operation and dismantling, which will definitely appear during their further use. All friction parts, threads and bearings must be lubricated with the chemicals intended for this purpose (greases and oils).

The steering knuckle device on a vehicle with ABS

The steering knuckle device for UAZ "Patriot" with ABS system consists of several parts:

• hub;
• brake disc;
• gaskets;
• trunnion;
• shield to protect the ABS sensor from strong heating during braking;
• clutch to disconnect the brake system;
• bearing pressed into the hub;
• hinge;
• wheel bolts;
• trunnion;
• fist body;
• pin;
• pivot support;
• o-rings;
• ABS harness mounting bracket;
• kingpin insert;
• ball joint;
• washers;
• nuts;
• lock and lock washer;
• gland clip;
• pulse disc;
• linings;
• cuff.

Steering knuckle device on non-ABS vehicles

The scheme of the steering knuckle for the UAZ "Patriot" assembly with the hub without the ABS system consists of:

• hub;
• brake disc;
• gaskets;
• trunnion;
• clutch to turn off the brakesystem;
• bearing pressed into the hub;
• hinge;
• wheel bolts;
• fist body;
• pin;
• pivot support;
• o-rings;
• kingpin insert;
• ball joint;
• washers;
• nuts;
• lock and lock washer;
• gland clip;
• pulse disc;
• linings;
• cuff.

Steering knuckle service during operation

During the operation of the UAZ "Patriot" car, it is necessary to periodically adjust the tightening of the ball pins of the steering knuckle. With heavy wear of the liners and pivots, a large gap is formed, which can be easily eliminated by pulling the sleeve to clamp the mechanism. This operation is carried out by auto mechanics as follows:

• first unscrew the nut and remove the gasket;
• using a special tool, tighten the clamping sleeve until the gap visible to the naked eye disappears; if this fails, you need to lightly hit the threaded part of the kingpin with a copper hammer;
• then you should turn the sleeve 15-20 degrees clockwise using a wrench;
• next, you need to install the gasket and tighten the nut with a torque wrench; torque during this operation should not exceed 100 Nm.

If after these manipulations the gap has not disappeared, you will have to install a new onesteering knuckle for UAZ "Patriot" instead of a failed spare part.