Checking Actuator Travel Of Parking-Brake Shoes

Information 

The actuator travel of the parking-brake shoes only needs to be checked for brake discs with an aluminium brake hub.

Aluminium brake hubs are installed on the following brakes:

• PCCB 
• Grey cast-iron brakes (only for Turbo) 

1. Close electric parking brake using the EPB button.
2. Read out the left/right actuator position and perform basic setting procedure if necessary.
   1. 2.1  > 9818 - PIWIS Tester II  must be connected before reading out the left/right actuator position.

      To do this, select >>Parking brake<< in the control unit overview and then select >>Measured values<< under >>Actual values/input Signals<<.

      1. 2.1.1  If the value is greater than > Length 4.5 mm  , basic setting of the duo-servo brakes must be performed.

         > 468316 ADJUSTING AND CALIBRATING PARKING-BRAKE SHOES 

         NOTE: Check free play using > 9818 - PIWIS Tester II  .
         Following basic setting, the free play on both sides must be within the prescribed dimension range.

         > 468316 ADJUSTING AND CALIBRATING PARKING-BRAKE SHOES 

3. Perform calibration using > 9818 - PIWIS Tester II  .

   > 468316 ADJUSTING AND CALIBRATING PARKING-BRAKE SHOES