Steering knuckle, wheel bearing module, shock absorber, all-wheel drive vehicle (Audi A4 B8)

Table of contents: Steering knuckle, wheel bearing… ↓ Removal and installation the wheel… ↓ Removal and installation the wheel… ↓

Steering knuckle, wheel bearing module, shock absorber, all-wheel drive vehicle

1. Drive shaft.
2. Backing plate.
3. Bolt.
4. Upper wishbone.
5. Nut: 95 Nm; replace when removed; tighten only when the vehicle is in a no-load position.
6. Eccentric washer.
7. Bolt.
8. Holder: for brake hose, caliper line harness and rear harness. speed sensor.
9. Bolt: 10 Nm.
10. Rear speed sensor.
11. Bolt: 9 Nm.
12. Silent block: cannot be replaced separately.
13. Ball bearing.
14. Wheel hub.
15. Brake safety shield.
16. Bolt: 10 Nm.
17. Brake disc.
18. Flange bolt: 200 Nm +180°; replace when removed.
19. Bolt: 5 Nm.
20. Cross rod: take into account the different designs: aluminum and steel, compliance; simultaneous installation of 2 racks of different types is not allowed.
21. Bolt: 90 Nm + 90°; replace when removed; tighten only when the vehicle is in a no-load position.
22. Bolt: 120 Nm + 360°; replace when removed; tighten only when the vehicle is in a no-load position. If the bolt is removed, then the wheel alignment angle must be adjusted.
23. Spacer tube: replace when removed.
24. Nut: Replace when removed. It is prohibited to use a nut to tighten a threaded connection. If the nut becomes loose, the wheel alignment angle needs to be adjusted.
25. Lower wishbone.
26. Silent block.
27. Hub bearing housing.
28. Bolt: 80 Nm + 90°; replace when removed.
29. Washer: designed to protect against corrosion; always use together.
30. Bolt: 150 Nm + 180°; replace when removed; tighten only when the vehicle is in a no-load position.
31. Shock absorber.
32. Anther.
33. Emphasis.
34. Bolt: 50 Nm + 45°; replace when removed.
35. Upper shock absorber support.
36. Nut: 35 Nm; replace when removed.
37. Protective cap.

Hub bearing "1" must always point upwards. Always place the wheel bearing assembly on wheel hub "2". This procedure also applies to wheel bearings without a hub.

Removal and installation the wheel bearing housing

Before starting work, measure the distance "a" from the center of the wheel to the lower edge of the wheel arch while the wheels are still on the vehicle. Place the vehicle on a lift. Unscrew the bolts securing the drive shaft to the wheel hub. Remove the wheel. Unlock and remove plug "1" from the rear speed sensor. Unlock connector "3" of the electronic mechanical parking brake and remove it. Unscrew bolt "2" and remove holder "6" with wires. Remove the brake caliper and brake. disc. Secure the brake caliper to the body so that its weight does not press on the brake. hose or brake. highway and did not damage them.

Unscrew bolts "1" and remove brake safety shield "2".

Remove the rear speed sensor "1". To do this, unscrew bolt "2". Remove the coil spring.

Mark the position of bolt "1" in relation to the hub bearing housing "2". Unscrew nut "4" and remove eccentric washer "3". Remove bolt "1".

Unscrew bolt "4".

Unlock the locking tabs "1" and remove the stone protection "2".

Unscrew bolt "1" and remove washer "2".

Loosen nut "3." Remove bolt "1" and remove spacer tube "2." If nut "3" loosens or bolt "1" is removed, the wheel alignment must be adjusted.

Move the wheel bearing housing to the side and pull the drive shaft out of the wheel bearing housing. Remove the wheel bearing housing. Remove the hub assembly.

Installation

Installation in reverse order. Insert the hub bearing housing. Insert bolt "1" with spacer tube "2" and tighten nut "3". Do not use nut "3" to tighten the threaded connection. Tighten bolt "1". Install the coil spring. Install the caliper and brake. disk. Install the RPM sensor at the rear. Install the wheel. Tighten the wheel. Tighten the drive shaft to wheel hub mounting bolts.

Removal and installation the wheel hub bearing assembly

Removing the hub bearing housing. Clamp the wheel bearing housing in a vice with protective aluminum jaws. Unscrew bolts "1" and remove the wheel bearing assembly "2".

Hub bearing "1" must always point upwards. Always place the wheel bearing assembly on wheel hub "2". This procedure also applies to wheel bearings without a hub.