Table of contents: Removal ↓ Installation ↓
Shock absorber strut and wheel bearing housing
- 1 - flange nut, 60 Nm. Self-locking, must be replaced.
- 2 - cup
- 3 - shock absorber strut. To replace the spring or shock absorber, it is removed and installed as a complete set.
- 4 - Allen screw, 8 Nm
- 5 - ABS sensor
- 6 - nut, 45 Nm. Self-locking, must be replaced.
- 7 - ball joint
- 8 - wheel bearing housing
- 9 - lid
- 10 - bolt, 7 Nm
- 11 - wheel bearing
- 12 - retaining ring
Remove together with regular pliers. When installing, make sure to position correctly.
- 13 - hub. With rotor for ABS sensor
- 14 - bolt. Be sure to replace.
- 15 - nut, 50 Nm + 90° (1/4 turn). Self-locking, must be replaced.
Removal
1. Remove the wheel cap. For light alloy wheels, the cap is removed using the removable hooks from the on-board tool kit.
2. Loosen the twelve-sided nut securing the drive shaft to the hub.
Warning: When loosening the bolt, the vehicle must be on its wheels. There is a risk of accident due to the high loosening torque!
3. Mark the position of the corresponding front wheel relative to the hub with paint. This will allow the balanced wheel to be installed in its original position during assembly. Loosen the wheel mounting bolts with the car on the ground. Raise the front of the car, place it on stands and remove the front wheel.
Warning: Lifting and installing the vehicle on stands is dangerous! Therefore, before carrying out the operation, read the subsection Jacking up a car.
4. Mark the position of the ball joint mounting bolts –1– with a felt-tip pen or scriber. Otherwise, during assembly, it is necessary to measure the front suspension and adjust it. Unscrew the bolts –1–.
5. Using a puller, disconnect the drive shaft from the hub.
Warning: Do not disconnect the brake hose from the brake caliper. Otherwise, the system will have to be bled after assembly.
6. Depending on the model, different front brake designs may be installed. FS–III caliper: Remove the covers – 2– and disconnect the caliper. Hang the caliper housing on a wire to the chassis. FN–3 caliper: Unscrew the rib bolts from the caliper housing. When installing, they must be replaced with new ones. Remove the caliper, refer to subsection Removal and installation the brake disc/caliper.
7. Remove the Phillips head screw and remove the brake disc.
8. Loosen the tie rod joint mounting nut to the end of the thread. It serves as a support for the puller.
9. Using a puller (A), for example, Hazet 779, press the steering rod joint pin away from the lever.
10. Disconnect the plug –1– of the ABS speed sensor.
11. Remove the ABS sensor wire from the holder (arrow).
12. Loosen the shock absorber strut mounting nut using the AUDI 3186 tool, holding the rod with a 7 mm Allen screwdriver to prevent it from turning. If you do not have this tool, loosen the nut using a cranked open-end wrench. There is a special Hazet tool No.2593–21.
13. Remove the shock absorber strut and wheel bearing housing down through the wheel housing.
14. Disconnect the wheel bearing housing and the shock absorber strut. To do this, unscrew the bolt securing the shock absorber strut to the wheel bearing housing.
15. Pull the shock absorber up out of the wheel bearing housing. If it is difficult to remove, slightly widen the slot in the wheel bearing housing with the AUDI tool 3424 or some other suitable tool to make removal easier.
Installation
16. Place the wheel bearing housing onto the shock absorber strut so that the holes in the shock absorber tube and the bearing housing align.
17. Insert a new bolt into the bearing housing/shock absorber strut. The bolt head is facing forward in the direction of travel when the shock absorber strut is installed. Screw on a new self-locking nut and tighten it to 50 Nm, then tighten it 90° using a rigid wrench (1/4 turn).
18. Before installing the shock absorber strut, lubricate the strut support with mounting oil "G 294 421 F1" (arrows in the illustration).
19. Insert the shock absorber strut and secure it from above with a new nut to a torque of 60 Nm, holding it from turning with a 7 mm Allen key.
Warning: To install the torque wrench, the AUDI– 3186 or HAZET 2593–21 in combination with the 2100–07 can be used as a holding tool.
20. Clean the teeth and threads of the drive shaft and hub with a brush to remove corrosion and other contaminants.
21. Coat the twelve-point nut and the outer joint teeth on the drive shaft with clean engine oil. Insert the outer joint as far as possible into the hub teeth.
22. Install the brake disc/caliper, refer to subsection Removal and installation the brake disc/caliper.
Warning: If the brake system pipes have been opened, the brake system must be bleed, refer to the subsection Bleeding the brake system.
23. Connect the ABS speed sensor connector and place the wire in the holder on the shock absorber strut.
24. Secure the ball joint to the lever. Install the mounting bolts in the oval holes so that the previously applied markings match. Tighten the bolts to 20 Nm, then tighten them further with a rigid wrench to an angle of 90° (1/4 turn).
Warning: When installing in a new control arm, set the mounting bolts to the middle position and tighten. Finally, measure the camber, refer to Section 15.
25. Insert the steering rod into the swing arm on the wheel bearing housing and tighten with a new self-locking nut to a torque of 45 Nm.
26. Install a new twelve-sided nut securing the drive shaft to the hub and tighten to 50 Nm. Have an assistant apply the brakes to prevent the hub from turning.
27. replace the front wheel so that the markings applied during removal match. Pre-lubricate the centering belt of the wheel disk on the hub with a thin layer of bearing grease. Do not lubricate the wheel mounting bolts. Replace rusty bolts. Tighten the bolts. Lower the car onto the wheels and tighten the bolts crosswise to a torque of 120 Nm.
28. Lower the vehicle onto its wheels and secure the drive shaft to the hub, refer to subsection Removal and installation drive shafts.
The original article is available on the online resource audimanual.ru