Replacing Lower Trailing-Arm Bearings

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WARNING: Mechanical, hydraulic or pneumatic press

Risk of squashing

→ Read specific safety information for the press.

→ Check that the press is working perfectly before use, particularly the safety components.

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

The pictures shown in this document may differ from the original .

Fig 1: Identifying Trailing Arm With Axle Bearing
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The pressure pieces and the hollow plunger-type hydraulic press VAS 6178 are used for removal and installation. Screw a suitable attachment from assembly tool set T10205 into the hydraulic press. Screw a suitable assembly fixture T10230 onto the threaded rod and position the required attachment from assembly tool set T10205 while pressing out and in. Nut and washer from assembly fixture T10230 are screwed onto the opposite end of the threaded rod.
Before pressing out the bearing -1- , mark the installation position using a suitable marker -A- .
A marking must be made for this purpose in the cut-out -2- for the bearing using a suitable marker to mark the trailing arm -3- (-A- ).

The following pressure pieces and nuts are required for bearing -1- :

Fig 2: Identifying Installation Position Of Bearing
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Pressing out:

Fig 3: Identifying Pressure Pieces For Bearing 1 - Pressing Out
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/2 - -1-
- T10230/7 - -2-
- T10230/15 - -3-
- T10230/51 - -4-
- Washer - -5-
- Nut - -6-
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.

Fig 4: Adjusting Arrangement Of Tools For Pressing Out Bearing 1
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

When pressing in the bearing -1- , pay close attention to the installation position marking -A- . The cut-out -2- for the bearing must be pointing to the marking -A- on the trailing arm -3- .

Fig 5: Identifying Installation Position Of Bearing
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fig 6: Identifying Pressure Pieces For Bearing 1 - Pressing In
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/2 - -1-
- T10230/12 - -2-
- T10230/16 - -3-
- Washer - -4-
- Nut - -5-
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.

Fig 7: Adjusting Arrangement Of Tools For Pressing In Bearing 1
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Bearing -2- consists of the axle bearing -1- and lock -2- .

Fig 8: Identifying Axle Bearing With Lock
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Before pressing out the bearing, check the alignment by checking the position of the cut-outs. → Alignment of bearing 2

Pressing out:

Use extractor T10230/59 for pressing out the lock.

Fit the extractor -1- on the lock -2- .

Tighten adjusting screw -3- until the extractor is fitted securely.

Fig 9: Aligning Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Tighten adjusting screw -4- to prevent the tool from tilting.

Fit attachment part -1- of the extractor close to the cut-out for the lock.

Fig 10: Adjusting Arrangement Of Tools For Pressing Out Lock For Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Tighten adjusting screw -2- until the lock is loosened completely.

Fig 11: Pressing Out Lock For Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The following pressure pieces are required for pressing out bearing 2:

Fig 12: Identifying Pressure Pieces For Bearing 2 - Pressing Out
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/54 - -1-
- T10230/55 - -2-
- T10230/56 - -3-
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 bearing 2 .

Pressing in:

Before pressing in the bearing, always check the alignment of the bearing! → Alignment of bearing 2

Fig 13: Adjusting Arrangement Of Tools For Pressing Out Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The following pressure pieces are required for pressing in bearing 2:

Fig 14: Identifying Pressure Pieces For Bearing 2 - Pressing In
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/54 - -1-
- T10230/10 - -2-
- T10230/57 - -3-
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 bearing 2 .

Fig 15: Adjusting Arrangement Of Tools For Pressing In Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The following pressure pieces are required for pressing in the lock:

Fig 16: Identifying Pressure Pieces For Bearing 2 - Pressing In Lock
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/54 - -1-
- T10230/57 (2x) - -2-
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 lock for bearing 2 .

To ensure that the lock is fitted at the correct position on the bearing, the lock must be crimped with the bearing.

Fig 17: Adjusting Arrangement Of Tools For Pressing In Lock For Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The following pressure pieces are required for crimping:

The pressure pieces are used as follows → Arrangement of tools for crimping bearing 2 .

Fig 18: Identifying Pressure Pieces For Bearing 2 - Crimping
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/54 - -1-
- T10230/57 - -2-
- T10230/58 - -3-
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.

IMPORTANT: Check alignment of pressure pieces and nuts!

Fig 19: Adjusting Arrangement Of Tools For Crimping Bearing 2
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
The following pressure pieces and nuts are required for bearing -3- :
Pressing out:

Fig 20: Identifying Pressure Pieces For Bearing 3 - Pressing Out
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/2 - -1-
- T10230/7 - -2-
- T10230/5 - -3-
- T 10230/13 - -4-
- Washer - -5-
- Nut - -6-
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.

Fig 21: Adjusting Arrangement Of Tools For Pressing Out Bearing 3
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Pressing in:

Fig 22: Identifying Pressure Pieces For Bearing 3 - Pressing In
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
- T10230/2 - -1-
- T10230/10 - -2-
- T10230/12 - -3-
- Washer - -4-
- Nut - -5-
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.

Fig 23: Adjusting Arrangement Of Tools For Pressing In Bearing 3
Courtesy of PORSCHE CARS NORTH AMERICA, INC.