Removing and installing hydraulic unit - vehicle with PSM: Removal
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For the removal and installation of the hydraulic unit -D-, the brake master cylinder -B- and the brake booster -C- remain fitted (installed).
- Switch off ignition. Remove cover -A- from the hydraulic unit/brake unit.
- Hold down brake pedal with pedal holder, so that the brake fluid does not run out of the expansion tank completely.
- To remove the hydraulic unit -D-, carry out the following removal procedure:
- Undo the brake lines on the hydraulic unit.
- Remove the lines between the brake master cylinder intermediate piston circuit and the hydraulic unit.
- Close the brake lines and the brake line connections with suitable plugs.
- Pull off pressure sensor plug.
- Unlock/disconnect the control module connector on the hydraulic unit. Cover the plug connection and the plug!
NOTE:
- In the case of assembly work on the hydraulic connections, the electrical plug connections on the hydraulic unit must always be connected!
- This prevents the plug connections on the hydraulic unit or in the plugs inside from being splashed with brake fluid or water!
- Any damp plug must be wiped dry before being disconnected from the plug on the hydraulic unit!
- Brake fluid on electrical contacts (even thinned brake fluid) leads to corrosion and may cause faults in the system!
- Undo and guide out the hydraulic unit. In the case of unfavourable tolerances, remove the hydraulic unit without the bracket for the hydraulic unit.