Brakes (Handbrake operation): Description and operation

HANDBRAKE OPERATION

1. Handbrake lever
2. Intermediate rod
3. Compensator
4. Rear cables

The handbrake operates on both rear discs or rear drums via 2 rear cables, a compensator and an intermediate rod which connects to the handbrake lever.

As the handbrake lever is applied, movement is transmitted through the intermediate rod to the compensator which, in turn, transmits movement to the 2 rear cables. Each rear cable pulls on a lever on the rear caliper (or brake shoe). On rear disc brakes, rotational movement of the lever is changed to linear movement by a strut which, via a push rod, pushes the piston along its bore to force the brake pads into contact with the disc. On rear drum brakes, the lever operates a cam which forces the brake shoes apart to bring the brake linings into contact with the drum.

5. Adjusting nut
6. Rear disc brake
7. Rear drum brake

Automatic adjustment of the disc brake pads (or the brake shoes) is maintained by operation of the foot brake. Manual adjustment of the handbrake cables is effected via the adjusting nut on the threaded intermediate rod bearing upon the compensator.