Parking Brake System: Adjustments
Adjusting the foot-operated parking brakeFoot-operated parking brake: checking free play
The foot-operated parking brake, hereafter referred to as the FPB, is equipped with asbestos-free brake pads. The FPB's pedal module is located on the left in the driver's footwell.
Note!
^ An FPB that is equipped with asbestos-free brake pads must never be adjusted in such a way that the pad must grind down during operation!
^ Adjustments may only be carried out at the two rear wheel adjustment devices! No adjustment may be made on the pedal module or on the Z deflector on the centre console.
^ Ensure that the FPB cables are routed correctly.
Check free play on the pedal module:
^ To do this, measure from the left seat rail up to the lower edge of the pedal plate on the FPB!
1. Press pedal 40 mm (+ 5 mm). If this dimension is reached, the wheels must be able to turn without grinding the brake pads.
2. Press pedal 75 mm (+ 5 mm). If this dimension is reached, the wheels must be fixed. If the wheels can still turn, the FPB must be adjusted!
Adjusting the foot-operated parking brake
^ The rear wheels must be removed so that the adjustment device can be accessed!
^ In the event of unfavourable tolerances, the brake pads may prevent the brake disc from turning freely. If this happens, the brake pads must be pressed back slightly and uniformly -Direction arrow- using piston resetting fixture 144.
1. Release the FPB pedal so that the wheels and brake discs can turn freely.
^ The wheels may still grind slightly even then! If this happens, loosen the rear brake cables by moving them to and fro gently.
2. Remove rear wheels.
3. Adjust brake shoes (on both wheels). To do this, unscrew the plugs and turn the brake disc with the opening towards the adjustment device position. Using a screwdriver, modify the adjustment device until the wheel can no longer be turned. Then unscrew 6 teeth (wheels must be free to turn).
4. Check the free play on the pedal module once again.
5. Mount rear wheels.