Competent repair of the front axle UAZ "loaf

classic model

UAZ 3741 is an all-wheel drive domestic utility vehicle, which in Soviet times was produced under the symbol UAZ 452. It received the popular nickname “loaf” for its characteristic body shape. In the factory configuration, it has an all-metal body, spring suspension and 2 drive axles with non-locking differentials that transmit power to all 4 wheels.

Rear-wheel drive is permanent, front-wheel drive is pluggable. Bridges are unified with UAZ 31512. Load capacity - 850 kg. Clearance - 220 mm. Repair of the UAZ 3741 front axle is extremely rarely required, since its design is quite reliable. Basically, it all comes down to replacing the wheel bearings and oil in the differential, ball and kingpins. But sometimes it is necessary to remove the bridge. And you have to do it yourself, since UAZ service centers are far from being everywhere.

We remove the faulty unit

Since the UAZ 3741 has a frame structure, it is quite easy to remove the front axle. To do this, you need to stock up on a powerful jack, stops that can withstand 1.5 tons of the weight of the front of the car, and a special liquid for unscrewing the nuts - WD-40.

The procedure is as follows.

1. First you need to substitute the stops under the rear wheels.
2. Then you need to disconnect the right and left brake pipes from the rubber hoses going to the front wheel brake drums.
3. After that, unscrew the nuts securing the brake hoses and remove the hoses themselves.
4. Next, you need to unscrew the nuts that secure the lower ends of the shock absorbers.
5. After that, it is necessary to unscrew the bolts connecting the front cardan to the drive gear flange.
6. Then you should unpin and unscrew the nut of the bipod ball pin.
7. Next, you need to disconnect the traction from the bipod.
8. Now you need to unscrew the nuts securing the stepladders of the front springs, remove the stepladders together with the linings and linings.
9. At the end, raise the front of the car by the frame and pull the axle out from under the car.

After the old bridge is removed, you can proceed with the installation of a new part, following the steps in reverse order. If necessary, the removed unit is disassembled, troubleshooting is carried out, damaged parts are replaced and the bridge is reinstalled.

Correction of wheel axial play

The most common reason for the inadequate behavior of the UAZ 3741 car on the road is a violation of the axial clearance of the pivots. It is very easy to check whether it is broken or not - just raise the front end with a jack and try to shake the wheel up and down. If end play exists, the pivot clearance must be adjusted.

Adjustment is carried out as follows.

1. We raise the front of the car, after putting the car on the handbrake.
2. We dismantle the wheel.
3. We unscrew the bolts securing the ball seal.
4. We check the axial play by shaking the structure up and down with our hands.
5. We unscrew a few bolts securing the upper lining of the kingpin. We remove the cover.
6. We take out the thinnest shim and put the pad back.
7. We perform the same procedures with the lower kingpin pad.
8. We tighten all the bolts and check the result. If the backlash is eliminated, we fasten the oil seal and wheel back - and we go. If the play remains, we adjust everything again, this time removing thicker gaskets.

Here is the node on the car

It is important to pull out equally thick gaskets both from above and below in order to maintain the alignment of the CV joint. If the alignment is broken, after a while you will have to make expensive repairs.