For 1990-2009 cars

### Removal Procedure

1. Remove the 2 underdrive brake piston seals from the underdrive brake piston.
2. Clean all the underdrive brake components and dry thoroughly.
3. Inspect the underdrive brake discs for excessive wear or damage and replace as necessary.
4. Inspect the underdrive brake piston for cracks or porosity and replace as necessary.
5. Inspect the underdrive brake piston return spring for distortion or weakness and replace as necessary.

### Installation Procedure

Install the new underdrive brake piston seals onto the underdrive piston.