Front Axle Components, Overview
Front Axle Components, Overview
1. Hex bolt, 75 Nm
2. Washer
3. Hex bolt M10 x 62
- Always replace after disassembly
4. Upper rear control arm
- Replace bushing
5. Hex bolt, 5 Nm
- Bolt onto system
6. Bolt
7. Self locking nut, 50 Nm
- Always replace after disassembly
8. Hex bolt M10 x 100
9. Self-Locking nut, 40 Nm
- Always replace after disassembly
10. Upper front control arm
- Can be removed together with mounting bracket
11. Suspension - strut
- Note varying spring/shock absorber versions, see vehicle data plate
12. Hex bolt M12x 1.5 x 120
- Always replace after disassembly
13. Lower guide link
- If antivibration mount leaks it must be replaced
14. Self-Locking nut, 100 Nm
- 125 Nm for aluminum wheel carrier
- Always replace after disassembly
15. Wheel bearing housing
- There are versions with and without a groove for a ring on the tie rod end - only new version is supplied as a replacement part
- On vehicles with a headlight vertical aim control system be careful of the Vehicle Level Sensor when removing and installing.
16. Backing plate
17. Hex bolt
- Always replace after disassembly
- Vehicle must not be raised when tightening
Tightening torques:
Bolt M14:
- 115 Nm + 180° (1/2 turn)
Bolt M16: 190
- Nm + 180° (1/2 turn)
18. Socket head bolt, 10 Nm
19. Self locking nut, 100 Nm
- 125 Nm for aluminum wheel carrier
- Always replace after disassembly
20. Hex bolt M12 x 1.5 x 85
21. Self-Locking nut, 90 Nm
- Always replace after disassembly
22. Coupling
- Arrow on coupling points in direction of travel
- Note change in coupling and in tightening torques Coupling W/Bonded Bushings Replaces Coupling W/Ball Joints
23. Self locking hex nut
- Always replace after disassembly
- 40 Nm + 90°(1/4 turn)
- nut has ribs on the bottom
- Only use this special nut as replacement!
24. Hex bolt M12 x 1.5 x 100
- Always replace after disassembly
25. Lower track control link
- On vehicles with a headlight vertical aim control system be careful removing and installing vehicle level sensor
26. Hex bolt M12 x 1.5x 110
- 110 Nm + 90° (1/4 turn)
- Always replace after disassembly
- Thread in body can be repaired with thread insert made of wire according to DIN 8140 (Helicoil). Thread insert must have same length as thread in body.
27. Hex bolt, 75 Nm
- M10 X 70
- Always replace after disassembly
28. Self locking nut, 100 Nm
- Note change in coupling and in tightening torques Coupling W/Bonded Bushings Replaces Coupling W/Ball Joints
- nut has ribs on the bottom
- Always replace after disassembly
- Only use this special nut as replacement!
29. Clip
- inserted in track control link
- Always replace
30. Carrier
- On vehicles with a headlight vertical aim control system be careful of the Vehicle Level Sensor when removing and installing
31. Hex bolt, 25 Nm
- Always replace after removing
- Observe different bolt versions and tightening torques. See Fig 6 below.
32. Support for carrier
33. Self locking nut
- 70 Nm + additional 180°
- Always replace after removing
34. Self locking nut
- 70 Nm + additional 180°
- Always replace after removing
35. Socket head bolt
- Tightening torques:
Bolt M8 X 48: 40 Nm
Bolt M10 X 48: 70 Nm
36. Backing plate
37. Drive axle
38. Drive axle with triple roller joint
39. Twelve point socket head bolt, 70 Nm
- For vehicles with triple roller joint
- M10 X 20
40. Hex bolt M10 x 62
- Always replace after disassembly
41. Mounting bracket
42. Self locking nut
- 50 Nm + 90° (1/4 turn)
- Always replace after disassembly
43. Self locking nut with flange, 20 Nm
- Always replace after disassembly
Fig. 6 Bolt versions
Bolt -A- without ribbing.
- Tightening torques: 25 Nm
Bolt -B- with ribbing.
- Tightening torques: 75 Nm
Bolt -C- with screw head and washer ribbing.
- Tightening torques: 30 Nm and turn an additional 90°
- All bolts must only be used once.