WM 468320 Removing And Installing Brake Shoes (All Models): Installing

Information 

• Replace the brake calliper fastening screws after each removal. Fastening screws of various lengths are available.  

Do not confuse the right and left brake discs during assembly (except for Carrera/Carrera 4 with standard brake system). Distinguishing characteristic: involute shape and spare part number. The flat surface of the brake discs is marked with R = right or L = left.

Installation:  The hooks (curved ends of the spring) of the compression spring -10-  on the wheel carrier are positioned (engaged) correctly when the ends of the spring are pointing towards the center of the wheel -Arrows-  (pointing downwards on the top brake shoe and upwards on the bottom brake shoe). Important note! Always inspect the top compression spring visually. Use your hand to check that the bottom compression spring is seated securely.

Fig 1: Exploded View Of Parking-Brake Shoes

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Adjustment:  The brake shoes can be adjusted using the adjustment device -2-  . No further adjustment is required because the parking-brake cables cannot be adjusted manually (self-adjusting system).

1. Lightly grease the adjustment device, pins on the actuating lever (spreading lever) and the sliding surfaces of the parking-brake shoes.
2. Install the actuating lever (spreading lever), brake shoes, return springs, compression springs and adjustment device. The spreading lever is a single-part assembly that cannot be disassembled.
   Fig 2: Identifying Parking-Brake Shoes

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Again check to ensure that the parking-brake shoes, adjustment device, return springs, compression springs and spreading lever are positioned correctly, and adjust them if necessary. Ensure that the hooks of the compression springs (curved ends of the spring) clasp the wheel carrier correctly. Examine the top compression spring -Arrow-  visually through the opening in the wheel carrier -Arrow-  . Use your hand to check that the bottom compression spring is seated securely.
   Fig 3: Checking Top Compression Spring

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Clean the levelling and centering surfaces on the brake disc and wheel hub. Then apply a very thin coat of Optimoly TA to the centering surface on the wheel hub.
5. Fit the brake discs. Do not confuse the right and left brake discs (except for Carrera/Carrera 4 with standard brake system in which both parts are the same).
6. Engage the parking-brake cable at the parking-brake lever.
   Fig 4: Installing Parking-Brake Cable

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Adjust the parking-brake shoes → 468316 ADJUSTING THE PARKING-BRAKE SHOES .