Removal and disassembly of the front wheel hub GAZ-3110
Put the parking brake
Set the stops under the rear wheels of the car.
Loosen the wheel bolts. Unscrew the hub cap and clean the hub nut from grease.
Raise the front of the car and put it on stands.
Remove the mounting bolts and remove the wheel.
Remove the brake disc.
Unscrew the nut 1 of the hub, straightening the jammed edges А, and remove the thrust washer 2. Remove the hub 3 from the knuckle pin.
Remove outer bearing 4, oil seal 7, thrust washer 6 and inner bearing 5 from the hub.
Clean the hub of grease and press out the outer races of the bearings.
Inspection
Rinse the hub and its parts thoroughly.
The threads in the hub holes for the wheel mounting bolts must not be defective.
The bearing seats in the hub must not show any signs of rotation of the outer races of the bearings. Otherwise, the hub must be replaced.
Hub bearings must be free of pitting, pitting and visible wear on the rolling surfaces. Replace defective bearings.
Build and install
Press the bearing outer races into the hub.
Put 150 g of Litol-24 grease into the hub, filling the recess in the inner cavity.
Lubricate the bearings with Litol-24 grease, filling the gaps between the cages and rollers.
Mount the inner bearing in the matching outer ring.
Install the thrust washer and press the oil seal flush with the end of the hub, having previously lubricated the working edge of the oil seal.
The sealing lip must point inside the hub.
Mount the hub onto the steering knuckle and insert the outer bearing into the matching outer race.
Install the thrust washer and tighten the hub nut until it contacts the thrust washer.
Finally tighten the hub nut, while adjusting the bearings.
Lock the hub nut by pushing the collar of the nut into the slots in the stud.
Fill three-quarters of the hub cap with Litol-24 grease and screw it onto the pin.
Install the brake disc.
Install the wheel and tighten the mounting bolts.
After that, lower the vehicle to the ground and finally tighten the wheel mounting bolts evenly diagonally to a torque of 100–120 Nm (10.0–12.0 kgf m).
Bearing adjustment
Set the car on the parking brake, place the stops under the wheels of the opposite side.
Hang out the wheel after loosening the wheel bolts and unscrewing the hub cap.
Turn the wheel by hand. It should rotate completely freely. Otherwise, eliminate the cause of braking.
Remove the wheel.
Fix the disc to the hub with three bolts. Straighten the wrinkled edges of the A nuts and unscrew the nut 1 (it must be replaced with a new one).
To screw in a new nut and, turning the hub 2 in both directions to self-align the bearings, tighten the nut 1 to a torque of 20 Nm (2 kgf m).
Turn the hub. It should rotate completely freely.
Loosen nut 1.
Then, tighten the nut 1 to 6–7 Nm (0.6–0.7 kgf m) and then unscrew it by an angle of 20–25°.
Lock it in this position by pressing the edges of the A nuts into the grooves of the trunnion.
The axial movement of the hub relative to the steering knuckle after adjustment should be within 0–0.3 mm.
Replace the hub cap and install the wheel. Tighten the wheel bolts to 100–120 Nm (10.0–12.0 kgf m) after the vehicle is on the ground.
Details:
Adjusting the wheel bearings
We fix the brake disc on the hub with two M12x1.25x30 bolts, or standard ones, by putting nuts on them.
Remove the caliper, or spread the brake pads if they touch the disc during its rotation.
We open the cap.
Loosen the hub nut.
We turn it off with a 36 head and replace it with a new one.
We tighten the hub nut to a torque of 2 kgcm, turning the hub from side to side. Rotation must be free.
We release the nut and tighten it again with a torque of 0.6–0.7 kgcm.
We release the nut at an angle of 20–25 ° and tighten it. The axial movement of the hub after adjustment should not exceed 0.02 mm.
If the hub heats up noticeably after driving several kilometers without using the brakes, re-adjustment is necessary.
Replacing the front wheel bearings
We remove the wheel, brake caliper and hang it nearby on a wire, or put it on the upper suspension arms.
Remove the brake disc.
We unscrew the cap, unscrew and unscrew the nut, as described above
We take the puck.
We take out the inner part of the outer bearing.
We remove the hub from the trunnion.
We pry off with a screwdriver and remove the hub cuff.
We take out the thrust washer and the inner parts of the bearings.
We clean the grease embedded in it from the hub.
Using a mandrel, press out the outer races of the bearings.
We wash the hub with kerosene or diesel fuel.
We press in the outer rings of the new bearings.
If there is no mandrel, you can use the rings of old bearings.
We put Litol-24 grease in the hub and assemble it in the reverse order.
Before assembly, fill the inner cavity of the cuff with grease.
