Removing and disassembling the front wheel hub of GAZ-3110
Place the car on the parking brake
Install chocks 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 place it on supports.
Unscrew the mounting bolts and remove the wheel.
Remove the brake disc.
Unscrew the hub nut 1, straightening the crumpled edges “A”, and remove the thrust washer 2.
Remove hub 3 from the steering knuckle axle.
Remove outer bearing 4, oil seal 7, thrust washer 6 and inner bearing 5 from the hub.
Clean the hub from grease and press out the outer rings of the bearings.
Wheel hub inspection
Wash the hub and its parts thoroughly.
The threads in the hub holes for the wheel mounting bolts must be free of defects.
The bearing seats in the hub must not show any signs of rotation of the outer rings of the bearings. Otherwise, the hub must be replaced.
Hub bearings must be free of pitting, cavities and visible wear on the rolling surfaces. Replace defective bearings.
Assembling and installing the wheel hub
Press the outer bearing rings into the hub.
Place 150 g of Litol-24 lubricant into the hub, filling the recess in the internal cavity.
Lubricate the bearings with Litol-24 grease, filling the gaps between the cages and rollers.
Insert the inner bearing into the corresponding outer ring.
Install the thrust washer and press the oil seal flush with the end of the hub, having first lubricated the working edge of the oil seal.
The working edge of the oil seal must be directed inside the hub.
Install the hub onto the steering knuckle and insert the outer bearing into the corresponding outer ring.
Install the thrust washer and screw the hub nut until it contacts the thrust washer.
Finally tighten the hub nut, adjusting the bearings.
Secure the hub nut by pressing the collar of the nut into the grooves of the axle.
Fill the hub cap three-quarters full with Litol-24 grease and screw it onto the axle.
Install the brake disc.
Install the wheel and screw in the mounting bolts.
After this, lower the car 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).
Adjusting the wheel hub bearings
Set the car on the parking brake, install chocks under the wheels of the opposite side.
Hang the wheel by first loosening the wheel mounting 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.
Secure the disc to the hub with three bolts. Straighten the crumpled edges "A" of the nut and unscrew nut 1 (it must be replaced with a new one).
Tighten a new nut and, turning hub 2 in both directions to self-install the bearings, tighten nut 1 to a torque of 20 Nm (2 kgf m).
Rotate the hub. It should rotate completely freely.
Loosen nut 1.
Then tighten nut 1 to a torque of 6–7 Nm (0.6–0.7 kgf m) and then unscrew it at an angle of 20–25°.
Secure it in this position by pressing the edges “A” of the nut into the grooves of the axle.
The axial movement of the hub relative to the steering knuckle axle after adjustment should be within 0–0.3 mm.
Tighten the hub cap and install the wheel.
Tighten the wheel mounting bolts to a torque of 100–120 Nm (10.0–12.0 kgf m) after placing the vehicle on the ground.
Details:
Adjusting the wheel hub bearings
We secure the brake disc to the hub with two M12x1.25x30 bolts, or standard ones, putting nuts on them.
Remove the caliper or spread the brake pads if they touch the disc when it rotates.
Unscrew the cap ak.
Unscrew the hub nut.
Unscrew it with the head 36 and replace it with a new one.
Tighten the hub nut to a torque of 2 kgcm, turning the hub from side to side. Rotation must be free.
Loosen the nut and tighten again with a torque of 0.6–0.7 kgf.
Loosen the nut to an angle of 20–25° and tighten it. The axial movement of the hub after adjustment should not exceed 0.02 mm.
If, after driving several kilometers without using the brakes, the hub becomes noticeably hot, readjustment is necessary.
Replacing the front wheel hub bearings
Remove the wheel and brake caliper and hang it nearby on a wire, or place it on the upper suspension arms.
Remove the brake disc.
Unscrew the cap, unscrew and unscrew the nut, as described above
Remove the washer.
Take out the inner part of the outer bearing.
Remove the hub from the axle.
Pry up with a screwdriver and remove the hub cuff.
Remove the thrust washer and the internal parts of the bearings.
We clean the grease contained in it from the hub.
Use a mandrel to press out the outer rings of the bearings.
We wash the hub with kerosene or diesel fuel.
Press in the outer rings of the new bearings.
If there is no mandrel, you can use old bearing rings.
Put Litol-24 lubricant into the hub and assemble in reverse order.
Before assembly, fill the inner cavity of the cuff with lubricant.