408519 Removing and installing front spring strut (steel springs)
WM 408519 Removing and installing front spring strut (steel springs)
Preliminary work
Removing and installing front spring strut (steel springs)
1. Remove the relevant side engine compartment trim. -> 700219 Removing and installing front cover (engine compartment) - section on "Removing"
2. Before raising the vehicle, loosen the drive shaft mounting at the wheel side. Operate the brake whilst doing so (a second mechanic is required). -> 404119 Removing and installing front drive shaft - section on "Removing" 404119 Removing and installing front drive shaft
3. Remove the drive shaft. -> 404119 Removing and installing front drive shaft - section on "Removing" 404119 Removing and installing front drive shaft
Preliminary work for removing and installing front spring strut (steel springs) on driver's side
1. Vehicles with PDCC:
Loosen PDCC reservoir at the fastening nut and set it aside. -> 430955 Replacing reservoir (PDCC) Service and Repair
2. Loosen and remove holder for PDCC reservoir at the threaded joints -1, 2- at the left of the engine compartment.
Holder for PDCC reservoir, cable guide
Preliminary work for removing and installing front spring strut (steel springs) on passenger's side
1. For V8:
Remove torque support. -> 103719 Removing and installing torque support - section on "Removing"
2. Unclip bleeder valve -1- at the coolant reservoir.
Unclipping wire harness at right of engine compartment
3. Unclip plug connections -2, 3- from the holders at the cross panel.
Removing front spring strut (steel springs)
WARNING
Wheel bearing housing raised incorrectly
- Risk of squashing
- Risk of damage to components
-> Wear personal protective gear.
-> Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
Information
For vehicles with PDCC, raise the wheel suspension slightly using a transmission jack (do not raise wheel suspension higher than normal vehicle position (vehicle resting on wheels). This changes the angular position of the control arm and the spring strut can be removed by turning carefully.
Information
- The pictures shown in this document may differ from the original.
- However, this does not affect the validity and relevance of the pictures.
Front spring strut (steel springs)
1. Screw fastening nuts -1- off the upper spring strut.
Upper spring strut (steel spring) mounting (shown as an example)
2. Carefully pull the spring strut -1- down -A- and then remove it in an upward direction -B-.
Removing spring strut (steel spring) (shown without wheel carrier)
Removing front spring strut (steel springs with PASM)
WARNING
Wheel bearing housing raised incorrectly
- Risk of squashing
- Risk of damage to components
-> Wear personal protective gear.
-> Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
Information
For vehicles with PDCC, raise the wheel suspension slightly using a transmission jack (do not raise wheel suspension higher than normal vehicle position (vehicle resting on wheels). This changes the angular position of the control arm and the spring strut can be removed by turning carefully.
Information
- The pictures shown in this document may differ from the original.
- However, this does not affect the validity and relevance of the pictures.
Front spring strut (steel springs with PASM); wire harness under transport protection cap
1. Release electric plug connection -1- for the spring strut wire harness -a- and pull it off -A-.
Electric plug connection for spring strut
2. Unclip wire harness from the holder -2- ( -B- ).
3. Screw fastening nuts -1- off the upper spring strut.
Upper spring strut (steel springs with PASM) mounting
4. Carefully pull the spring strut -1- down -A- and then remove it in an upward direction -B-.
Removing spring strut (steel spring) (shown without wheel carrier)
Installing front spring strut (steel springs)
Information
- All screws and bolts on the axle must be tightened in vehicle position. Vehicle position means: vehicle resting on its wheels, or the wheel suspension is lifted with a universal jack. -Dimension X- from lower edge of wing to centre of axle corresponds to vehicle position. For the current height values, please refer to the adjustment values for suspension alignment -> 4495TW Adjustment values for suspension alignment 4495TW Adjustment values for suspension alignment.
Dimension -X-: lower edge of wing to centre of axle (shown as an example)
- Visually inspect all parts.
- Replace self-locking nuts.
- Replace all expansion screws (screws fitted using torque angle tightening procedure).
- Use correct tightening torques and torque angle. -> 4X00IN Tightening torques for front axle 4X00IN Tightening torques for front axle
1. Insert the spring strut -1- into the vehicle -A-.
Position the pull-ring (driver's side) or the holder (passenger's side) at the top of the wheel housing.
Installing spring strut (steel spring) (shown without wheel bearing housing)
2. Before fitting the spring strut, you may have to remove the protection cap on the spring strut.
3. Check that the pull-ring -1- is seated correctly.
Pull-ring seating (shown with protection cap)
4. For V8:
Check that the torque support holder -1- is seated correctly.
Installing torque support holder (shown with protection cap)
5. Screw in and tighten fastening nuts -1- on upper spring strut. -> 4X00IN Tightening torques for front axle 4X00IN Tightening torques for front axle
Upper spring strut (steel spring) mounting (shown as an example)
Installing front spring strut (steel springs with PASM)
Information
- All screws and bolts on the axle must be tightened in vehicle position. Vehicle position means: vehicle resting on its wheels, or the wheel suspension is lifted with a universal jack. -Dimension X- from lower edge of wing to centre of axle corresponds to vehicle position. For the current height values, please refer to the adjustment values for suspension alignment -> 4495TW Adjustment values for suspension alignment 4495TW Adjustment values for suspension alignment.
Dimension -X-: lower edge of wing to centre of axle (shown as an example)
- Visually inspect all parts.
- Replace self-locking nuts.
- Replace all expansion screws (screws fitted using torque angle tightening procedure).
- Use correct tightening torques and torque angle. -> 4X00IN Tightening torques for front axle 4X00IN Tightening torques for front axle
1. Remove transport protection cap.
2. Insert the spring strut -1- into the vehicle -A-.
Position the pull-ring (driver's side) or the holder (passenger's side) at the top of the wheel housing.
Guide the wire harness through the opening in the spring strut mount.
Installing spring strut (steel spring) (shown without wheel carrier)
3. Before fitting the spring strut, you may have to remove the protection cap on the spring strut.
4. Check that the pull-ring -1- is seated correctly.
Pull-ring seating (shown with protection cap)
5. For V8:
Check that the torque support holder -1- is seated correctly.
Installing torque support holder (shown with protection cap)
6. Screw in and tighten fastening nuts -1- on upper spring strut. -> 4X00IN Tightening torques for front axle 4X00IN Tightening torques for front axle
Upper spring strut (steel spring) mounting
7. Plug in electric plug connection -1- for the spring strut -A- and lock it -a-.
Installing plug connection for spring strut
8. Clip wire harness into the holder -2- ( -B- ).
Subsequent work
Subsequent work for removing and installing front spring strut (steel springs)
1. Fit the drive shaft. -> 404119 Removing and installing front drive shaft - section on "Installing" 404119 Removing and installing front drive shaft
2. Fit the relevant side engine compartment trim. -> 700219 Removing and installing front cover (engine compartment) - section on "Installing"
Subsequent work for removing and installing spring strut (steel springs) on driver's side
1. Vehicles with PDCC only:
Secure holder for PDCC reservoir at the threaded joints -1, 2- at the left of the engine compartment.
Holder for PDCC reservoir, cable guide
2. Secure PDCC reservoir at the fastening nut. -> 430955 Replacing reservoir (PDCC) Service and Repair
Subsequent work for removing and installing spring strut (steel springs) on passenger's side
1. Install torque support. -> 103719 Removing and installing torque support - section on "Installing"
2. Clip in bleeder valve -1- at the coolant reservoir.
Clipping in wire harness at right of engine compartment
3. Clip plug connections -2, 3- into the holders at the end plate.