Replacing bearing for trailing arm

Replacing bearing for trailing arm
Tools





Information
General
The bearing for the trailing arm must be pressed in separately when replacing the wheel bearing housing. The wheel bearing housing is not supplied with the bearing as a spare part.





Tools











Preliminary work
1. Raise the vehicle.
2. Remove the wheel.

Removing bearing for trailing arm

ATTENTION:
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.

Note:
^ The bearing is replaced using the assembly fixture T10230.
^ Pressure head no. 13 is used from the selection of attachments T10205.





1. Release brake caliper and hang at a suitable position in the wheel well. Do not open the brake system.





2. Loosen the lower trailing arm at the mount -arrows-.





3. Insert tire mounting lever between the wheel bearing housing and the trailing arm -see figure-. Press the trailing arm down until the bearing is freely accessible. Do not damage the brake cover plate.





4. Press the lower trailing arm down further until a suitable spacer -see figure- (e.g. wooden block) can be inserted (makes removal easier).





5. The pressure pieces and the tubular piston cylinder VAS 6178 are used for removal. No. 13 is screwed into the tubular piston cylinder. No. 2 is screwed on to the threaded rod and positioned in No. 13 for pressing out the bearing.
^ T10230/2
^ T10230/3
^ T10230/4
^ T10230/5
^ T10230/6
^ T10230/7
^ T10230/13
^ T10230/14
^ T10230/15
The pressure pieces -see figure- are used as follows:
Get a second worker to help when working on the wheel bearing housing.









6. Position the tubular piston cylinder -see figure- and pre-tension slightly to prevent the pressure pieces from slipping out of place. Check the position of the pressure pieces again.





7. The pressure piece must be positioned correctly on the contact surfaces of the wheel bearing housing. The cut-out in the pressure piece -arrow- should be used as a viewing window. Now press the bearing out carefully. When doing so, stand to the side of the tubular piston cylinder and make sure that the tubular piston cylinder cannot fall down.

Removing bearing for trailing arm

ATTENTION:
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 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.

Note:





^ The entire threaded parts of the axle must be tightened in vehicle position. Vehicle position means: vehicle standing on the wheels, or the wheel suspension is raised using a universal vehicle lift. Dimension -X- from lower edge of wing to middle of axle 506 mm ± 10 mm corresponds to vehicle position.





^ Use an intermediate layer (hard rubber). Do not damage the brake cover plate.
^ Screws and nuts are Dacromet-coated and must not be greased.
^ Use new screws and lock nuts.
^ Observe tightening torques.

1. To fit the new bearing use the -pressure pieces- and tubular cylinder VAS 6178. No. 13 is screwed into the tubular piston cylinder. No. 2 is screwed onto the threaded rod and positioned in No. 13 for pressing in the bearing.





^ T10230/2
^ T10230/3
^ T10230/6
^ T10230/7
^ T10230/8
^ T10230/13
^ T10230/14
^ T10230/15
The -pressure pieces- are used as follows:
Get a second worker to help when working on the wheel bearing housing.









2. 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.





3. The pressure piece must be positioned correctly on the sealing surfaces of the wheel bearing housing. Now press the bearing in carefully. When doing so, stand to the side of the tubular piston cylinder and make sure that the tubular piston cylinder cannot fall down. Maximum assembling force must not exceed 30 KN at the stop. Press the bearing in until it is enclosed evenly by the rubber lip.
4. If the bearing for the axle strut is fitted cleanly, install the wheel bearing housing in the bottom axle strut.

Subsequent work

1. Fit brake caliper.
2. Fit wheel.