UAZ 469 front axle device with description. Scheme, photo

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The UAZ 469 front axle device differs from its rear counterpart in some design features. In addition to the bridge beam and differential, the assembly includes universal joints of equal speeds at the corners and a gearbox. The axle housing is connected to the ball joint with a flange. The hinge body is fixed by means of a pair of pins. The gearbox cover with pin and brake shield is bolted to the frame.

Description

To reduce the degree of wear of the assembly parts, it is recommended to turn off the UAZ 469 front axle when moving on a hard surface, the device of which we will consider further. You should also deactivate the hubs on the front wheels. To do this, remove the caps and unscrew the bolts from the shaft socket. As a result, the coupling is installed in a position corresponding to the annular groove and the end face of the coupling. After installing this element in the required position, they begin to tighten the protective cap.

Activation of the front wheel is made by securely fixing the bolts. The design scheme of the bridge is focused on the synchronous switching on and off of the drive of both wheels.

Front devicebridge UAZ 469

Crankcase, main gear and differential match those of the rear counterpart. In modification 469B, an oil flinger ring and a right-hand thread with the stamp "P" are provided. A ball joint is attached to the axle housing. It is fixed with five bolts. Bushings and pins are pressed into it. In addition, on the support there is a cover for the crankcase of the wheel reduction gear and a steering knuckle housing. A trunnion and a brake shield are attached to the locking element with six bolts.

The pivot appendage of the rotary cam is mounted with an interference fit, the value of which is adjustable from 0.02 to 0.10 mm. To prevent rotation of this element, locking pins are provided in the design. Adjustment of the position is made by means of gaskets installed in the upper part, between the fist lever. In addition, the position can be corrected by installing spacers in the side and bottom of the part.

Features

The UAZ 469 front axle device, the photo of which is presented above, suggests the presence of an oil seal, which is responsible for retaining lubricant in the housing and protecting the rotary cam from contamination. The element consists of an inner cage, a sealing rubber ring, a baffle, a felt pad and an outdoor unit. The oil seal is attached to the skeleton of the steering knuckle with bolts.

Protection against leakage of the lubricant mixture from the crankcase of the main gear into the rotary cam is provided by an internal self-clamping oil seal made of rubber in a metal cage. Lubricationthe upper pivot elements and the ball joint are produced through special grease fittings. The lower elements are lubricated by the substance coming from the support by gravity.

Hinge

The UAZ 469 front axle device includes a hinged system for stabilizing the angular velocity. Its design guarantees the stability of the angular velocity of the driving and accompanying shaft. In this case, the distance and deviation between them do not play a role. The hinge itself consists of a pair of forks, in the curvilinear sockets of which four balls are placed. These parts have a fifth locating ball in the center bays to center the forks.

Longitudinal movement of the hinge is prevented by a ball bearing and safety washer. The leading inner fork interacts with the axle shaft of the differential gear. On the edge of the outer driven fork, the main gear of the wheel reduction gear and a roller-type bearing with a lock nut are mounted. The internal engagement of the element occurs by bolting. The driven part aggregates with a shaft on a roller bearing and a bronze bushing located in the middle of the trunnion. At the end of the shaft, a device is provided for deactivating the front wheels of the machine. It consists of a movable coupling, spring, balls and bolts. The outer protrusions connect the part to the inner splines of the flange, fixed with bolts on the hub.

Reducer device

The front axle UAZ 469 has a gearbox almost identical to the wheel gearbox of the rear axle. Among the differences between these elements is the way the drive gear is installed and fastened, as well as the design of the ball bearing placed in a special glass socket. The driving toothed gear is mounted on the splines of the driven articulated fork. It is fixed with the bearings by means of a special nut, which opens into the groove of the shaft after tightening.

The support washer is between the roller bearing and the gear. These parts are not interchangeable with rear gear counterparts. Maintenance is the same for both nodes.

UAZ 469 front axle device: wiring diagram

Assembly and connection of the part in question is carried out in the following order:

1. The sleeve is inserted into the knuckle pin by pressing. It should be flush with the end of the landing nest. The sleeve is then rotated and adjusted with a special brooch to the desired diameter.
2. Limiting the movement of the hinge of identical angular longitudinal velocities is provided by washers installed in the trunnion and ball bearing. Their location should be directed with lubrication grooves towards the hinge. The fixing washer is attached by punching in several places at points evenly distributed around the circumference.
3. Replacing the kingpin bushings involves pressing and screwing them down to a diameter of 25 mm, with the possibility of passing through each bushing.
4. Grease is poured into the bearing when the hinge is installed.
5. The device of the front axle on the UAZ 469 suggestsadjustment of the necessary axial tensions with the help of adjusting inserts, on which the location of the bushings and the ball joint itself depends. At least five spacers are used. The total thickness of the top and bottom should not have a difference of more than 0.1 mm.
6. Before assembling the stuffing box, the felt ring is soaked in warm engine oil.

After assembling the front axle, it is checked on the stand in a static state and under load. This position is created by synchronous braking of the axle shafts. If the assembly is assembled correctly, there will be no increased noise of the assembly, oil leakage in the seals and cuffs, as well as the joints.

Maintenance

The UAZ 469 front axle device, the diagram of which is given above, provides for a number of preventive and adjustment operations during the operation period. Among them:

• Periodic tightening of threaded connections.
• Check pins for gaps.
• Correction of bearings.
• Repairing gear clutches.
• Check convergence.
• Regular lubrication of moving parts according to the lubricant prescription table.

Visual inspection of the UAZ 469 front axle device provides for inspection of the steering knuckles for the integrity and suitability of the adjusting screws, restrictive rotary stops, as well as the reliability of the stopper of these elements.

The design scheme of the node in question is designed for maximumthe angle of rotation of both wheels in the respective positions is about 27 degrees. An increase in this indicator indicates deformation of the articulated rotary cams, and this significantly complicates the repair.

Adjustment

The UAZ 469 front axle device, the photo of which is given above, at the factory involves adjusting the pivot with preload. In this case, the same number of correction pads are installed in the upper and lower parts of the assembly.

The UAZ 469 front axle kingpin device is different in that special attention must be paid to the tightening mode of these elements. Fixation weakens as a result of gradual wear of rubbing parts. Axial gaps appear between the pivot ends and the support rings.

Repair

The front axle of the military UAZ 469, the device of which is discussed above, may sometimes require repair. For repair, you will need to remove the part and disassemble it. This process is carried out as follows:

• Put pads on the rear wheels of the car.
• Nuts and other block fastening systems are unscrewed.
• The rod is unhooked from the bipod, after which the nuts on the shock absorbers and ball pin are removed.
• The front spring mount with pads is being dismantled.
• The front of the car is lifted beyond the frame, after which the assembly is dismantled.

Front axle UAZ 469, device with descriptionlisted above requires professional service. But if you have the appropriate skills, you can manipulate this block on your own.