Workshop Hints
Workshop HintsRemoving Cables: In order to change the cables, it is necessary for the mounting pan to be removed downwards to such an extent that the balance arm can be accessed for disconnecting and connecting the cables. To accomplish this, the drive shaft must be removed beforehand . The parking brake fever must be in the release position and the A.-7F unit must be locked.
A screwdriver must be used to press back the locking clip of the tensioning spring until the locking hook engages the locking clip of the tensioning spring (position C). In position C the tensioning spring is pretensioned to maximum effect and the balance arm with the cables is in the maximum release setting. The ASZE unit must also be locked when replacing the parking brakes shoes.
Remove the mounting clip (1) and slide the cable sweges out of the locating recesses in the balance arm (2).
The cables can now be disconnected from the parking brake shoe actuators (at the wheels).
Installing Cables: The parking brake lever must be in the released position. The cables do not automatically feed themselves into the balance arm on insertion, but must be guided with a screwdriver into the correct position.
Attach the mounting clip (1) to secure the cables in the balance arm (2). The mounting pan can be resecured in position. Connect the cables to the parking brake actuators (at the wheels).
Adjustment: The basic clearance of the parking brake shoes is adjusted at the adjustment wheel (screw) of the parking brake shoes in the traditional manner. The parking brake is automatically adjusted when the ASZE unit is unlocked. The pretension of the tensioning spring is relieved at the automatic cable adjuster with a screwdriver by moving the locking hook out of the locking clip.
The parking brake lever can be tightened in a low notch setting (pull upwards 1 click) for this procedure. This makes it easier to access the locking hook. When the locking hook is released, the automatic cable adjuster returns to the operating position. The cables are retensioned.