Front Suspension
WM 402055 Replacing bearing for trailing arm
Preliminary work
1. Raise the vehicle.
2. Remove lower trailing arm.
General warning notes
Caution:
Increased risk of accidents when working with hydraulic presses - danger of crushing, deformation of components.
- Risk of injury if the threaded rod in the tubular piston cylinder breaks because of pressure or traction.
- Possible danger of damage or injury.
- The worker must always stand away from the direction of pressure or traction on the threaded rod when using the tubular piston cylinder.
- Position pressure pieces correctly and ensure that they are seated properly.
- Watch out for falling parts when working with hydraulic presses.
- Danger of injury and material damage if the wheel carrier is raised incorrectly.
- Do not damage the brake cover plate.
Caution:
Increased risk of accidents if the wheel carrier is raised improperly!
- Injuries and material damage are possible.
- Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels).
- When raising the suspension, use a suitable intermediate layer (hard rubber).
- Do not damage the brake cover plate.
Tools and materials
Lower trailing arm
Lower trailing arm with rubber-metal mounts A, B, C
Tool set T10230
Tool set T10230
Replacing
Information
If a hydraulic mount/rubber-metal mount is installed, it must be fitted in the correct position. In other words: the "cut-outs" must be fitted horizontally, in vehicle position (±5°). Additional instruction in relation to the hydraulic mount -B- : always fit the wide face of the core of the mount towards the center of the vehicle. Vehicle position = vehicle standing on its wheels.
Cut-outs of trailing-arm bearing in installation position
- Position the tubular piston cylinder and pre-tension slightly to prevent the pressure pieces from slipping out of place. Check the position of the pressure pieces again.
- Maximum assembling force must not exceed 60 KN at the stop.
Lower trailing arm with rubber-metal mounts A, B, C
- The three rubber-metal mounts -A,B,C- must be replaced once the trailing arm is removed.
The pressure pieces and the tubular piston cylinder VAS 6178 are used for removal. This involves screwing pressure head T10205/13 into the tubular piston cylinder. T10230/2 is screwed on to the threaded rod and positioned in T10205/13 for pressing bearings in and out. Nut T10230/15 and washer T10230/14 are screwed onto the opposite end of the threaded rod.
The following pressure pieces and nuts are required for bearings -A-:
Pressing out:
Tools for pressing out hydraulic/rubber-metal mounts
- T10230/2
- T10230/7
- T10230/9
- T10230/10
- T10230/14
- T10230/15
Information
When using the pressure pieces, the direction arrow shows the direction for pressing the rubber-metal mounts in or out on the trailing arm.
The pressure pieces are used as follows:
Arrangement of tools for pressing out hydraulic/rubber-metal mounts
Pressing in:
Tools for pressing in hydraulic/rubber-metal mounts
- T10230/2
- T10230/11
- T10230/12
- T10230/14
- T10230/15
Information
When using the pressure pieces, the direction arrow shows the direction for pressing the rubber-metal mounts in or out on the trailing arm.
Information When pressing the mounts in, make sure that pressure piece 11, in particular, is positioned correctly. Pressure piece 11 must not cover up the bore for the bearing in the control arm!
The pressure pieces are used as follows:
Arrangement of tools for pressing in hydraulic/rubber-metal mounts
The following pressure pieces and nuts are required for bearings -B-:
Pressing out:
Tools for pressing out spring-strut mounts
- T10230/2
- T10230/5
- T10230/7
- T10230/13
- T10230/14
- T10230/15
Information
When using the pressure pieces, the direction arrow shows the direction for pressing the rubber-metal mounts in or out on the trailing arm.
The pressure pieces are used as follows:
Arrangement of tools for pressing out spring-strut mounts
Pressing in:
Tools for pressing in spring-strut mounts
- T10230/2
- T10230/10
- T10230/12
- T10230/14
- T10230/15
Information
When using the pressure pieces, the direction arrow shows the direction for pressing the rubber-metal mounts in or out on the trailing arm.
The pressure pieces are used as follows:
Arrangement of tools for pressing in spring-strut mounts
The following pressure pieces and nuts are required for bearings -C-:
Pressing out:
Tools for pressing out rubber-metal mounts
- T10230/2
- T10230/4
- T10230/5
- T10230/7
- T10230/14
- T10230/15
Information
When using the pressure pieces, the direction arrow shows the direction for pressing the rubber-metal mounts in or out on the trailing arm.
The pressure pieces are used as follows:
Arrangement of tools for pressing out rubber-metal mounts
Pressing in:
Tools for pressing in rubber-metal mounts
- T10230/2
- T10230/7
- T10230/8
- T10230/14
- T10230/15
Information
When using the pressure pieces, the direction arrow shows the direction for pressing the rubber-metal mounts in or out on the trailing arm.
The pressure pieces are used as follows:
Arrangement of tools for pressing in rubber-metal mounts
Subsequent work
Information
- The entire threaded parts of the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on its wheels, or the wheel suspension is raised with a universal vehicle lift. Dimension -X-, from lower edge of wing to center of wheel - Control value: 502 mm ±10 mm corresponds to vehicle position.
- Carry out a visual inspection of all parts.
- Replace self-locking nuts.
- Replace all expansion screws (screws fitted using torque angle tightening procedure).
- Observe correct tightening torques and torque angle.
- Make sure the bevel pinions from the ball joints, are clean. Clean with a lint-free cloth as necessary. Do not use cleaning agent.
1. Install lower trailing arm.
2. Fit wheel.
3. Carry out suspension alignment.