Adjusting the parking brake drive (Mercedes-Benz M-Class W163)

1. Estimate the stroke size (by the number of ratchet clicks) and the resistance force of the parking brake pedal. Compare the test results with the requirements of the Specifications, and make appropriate adjustments if necessary.

2. Remove the rear wheels.

3. Pre-tension the automatic slack adjuster (compensating lever) cable.

4. Using a screwdriver, turn the regulator wheel (105) from left to right until the parking brake drum is engaged - the hub should not be able to be turned manually.



5. Release the wheel (105) just enough (approximately 5 teeth), so that it is once again possible to turn the hub manually.

Attention! The regulators of both brake mechanisms must be released exactly by the same number of teeth!

6. Unload the automatic slack adjuster (compensation lever) cable.

7. Apply the parking brake several times, checking the pedal travel and the resistance force when pressing it. Assess the reliability of the locking of the rear wheel hubs by the parking brake, check their freedom of rotation when releasing the pedal (lever under the dashboard).

8. Replace the wheels.