Front Suspension, Servicing
Front suspension, servicing
Note:
^ If a vehicle that has a drive axle removed is to be moved, an outer CV joint must be installed in place of the drive axle and be tightened to 50 Nm. Otherwise, the wheel bearing will be damaged.
^ Welding and straightening operations are not permitted on load-bearing or wheel-controlling components.
^ Always replace self-locking nuts.
^ Always replaced corroded bolts/nuts.
1. Hex bolt, 75 Nm
2. Washer
3. Hex bolt
Note:
^ Vehicles with steel mounting bracket; bolt length: M10 x 60
^ Vehicles with aluminum mounting bracket; bolt length: M10 x 62
^ Replace each time
4. Upper rear control arm
^ Removing and installing Bushings for front and rear upper control arms, replacing
5. Hex bolt, 7 Nm
^ Replace each time
6. Bolt
7. Self-locking hex nut, 50 Nm
^ Replace each time
8. Hex bolt
^ M10 x 100
^ Press out of wheel bearing housing Separating connections between upper control arms and wheel bearing housing
9. Self-locking hex nut, 40 Nm
^ Replace each time
10. Upper front control arm
^ Can only be removed with mounting bracket
11. Suspension strut
^ Allocation of coil spring to vehicle
12. Hex bolt
^ M12 x 1.5 x 120
^ Replace each time
13. Guide link
If hydraulic mount is leaking, it must be replaced Guide link mountings, replacing
14. Self-locking nut
^ Replace each time
^ Flange nut, M12 x 1.5, for wheel bearing housing without bushing (old design) Wheel bearing housing/tie rod end, modified
Tightening torque: 100 Nm
^ Combination nut, M12 x 1.5, for wheel bearing housing with bushing (new design) Wheel bearing housing/tie rod end, modified
Tightening torque: 125 Nm
^ Flange nuts should be installed on vehicles with wheel bearing housings without bushings and support arms of old design.
^ When installing wheel bearing housings with bushings, flange nuts must be replaced with combination nuts
15. Wheel bearing housing
^ Different wheel bearing housing designs (with and without bushings) Wheel bearing housing as of model year 2002, modified
^ Modification Wheel bearing housing/tie rod end, modified
16. Shield plate
17. Hex bolt
^ Changed from hex socket bolt
^ Replace each time
18. Socket hex head bolt, 10 Nm
19. Self-locking nut
^ Replace each time
^ Flange nut, M12 x 1.5, for wheel bearing housing without bushing (old design) Wheel bearing housing as of model year 2002, modified
Tightening torque: 100 Nm
^ Combination nut, M12 x 1.5, for wheel bearing housing with bushing (new design) Wheel bearing housing as of model year 2002, modified
Tightening torque: 125 Nm
^ Flange nuts should be installed on vehicles with wheel bearing housings without bushings and support arms of old design.
^ When installing wheel bearing housings with bushings, flange nuts must be replaced with combination nuts.
20. Hex bolt
^ M12 x 1.5 x 85
21. Self-locking hex nut, 90 Nm
^ Replace each time
^ Tighten nuts in unloaded condition Front axle to unladen position, lifting!
22. Connecting link
Arrow on connecting link points in driving direction
^ Modification Connecting link for stabilizer, modified
23. Self-locking nut
^ 40 Nm plus an additional 90° 1/4 turn
^ Replace each time
^ Depending upon design, use self-locking nut or nut with ribs on the underside
24. Hex bolt
^ M12 x 1.5 x 100
^ Replace each time
25. Lower control arm
^ Application See Parts Catalog
^ Different lower control arm designs (for wheel bearing housings with and without bushings) Control arm as of model year 2002, modified
^ Checking Lower control arm, checking
26. Clip
^ Replace each time
27. Hex bolt, 75 Nm
^ M10 x 70
^ Replace each time
If weld nut threads are damaged, threads can be repaired using Heli-Coil thread inserts.
Servicing thread in side rail Threads in longitudinal member, servicing
28. Hex bolt
^ M12 x 1.5 x 110
^ 110 Nm plus an additional 90° 1/4 turn
^ Replace each time
If weld nut threads are damaged, threads can be repaired using Heli-Coil thread inserts.
Servicing thread in side rail Threads in longitudinal member, servicing
29. Subframe/engine carrier
^ Removing and installing Subframe, removing and installing
30. Self-locking nut
^ 40 Nm plus an additional 90° 1/4 turn
^ Replace each time
^ Modification Connecting link for stabilizer, modified
31. Hex bolt
^ M8 x 25
Was modified
If weld nut threads are damaged, threads can be repaired using Heli-Coil thread inserts.
Servicing thread in side rail Threads in longitudinal member, servicing
32. Subframe support
33. Self-locking nut
^ 80 Nm plus an additional 90° 1/4 turn
^ Replace each time
Tighten nuts in unloaded condition Front axle to unladen position, lifting!
34. Self-locking nut
^ 80 Nm plus an additional 90° 1/4 turn
^ Replace each time
Tighten nuts in unloaded condition Front axle to unladen position, lifting!
35. Multi-point socket head bolt
36. Backing plate
37. Drive axle
38. Drive axle with triple roller joint
39. Socket head bolt
40. Hex bolt
Note:
^ Vehicles with steel mounting bracket; bolt length M10 x 60
^ Vehicles with aluminum mounting bracket; bolt length M10 x 62
^ Replace each time
41. Mounting bracket
Material was revised from steel to aluminum.
Installing different mounting brackets is not permitted.
^ Removing and installing Mounting bracket, removing and installing
42. Self-locking nut
^ 50 Nm plus an additional 90° 1/4 turn
^ Replace each time
Tighten nuts in unloaded condition Front axle to unladen position, lifting!
43. Self-locking hex nut, 22 Nm
^ Replace each time
Modified bolts for subframe supports
The subframe support bolts were changed three times since start of production.
Bolt - A - was used at start of production.
Bolt - A - has no ribs on the underside of the washer, it is smooth.
Then the bolt was changed to bolt - B -.
Ribbed bolt - B - is ribbed on the underside - arrow -.
As of 04.99, bolt - C - has been put into use. It can be installed in all vehicles.
Bolt - C - is ribbed on the underside of the bolt head and washer.
The bolts have different tightening torques.
Tightening torques:
