Disc Brakes (Rear)

DESCRIPTION






There are several distinctive features to the rear disc brakes on this vehicle. The single piston, floating caliper rear disc brake system includes a hub and bearing assembly, adapter, rotor, caliper, and brake shoes.
This vehicle is equipped with a caliper having a 42 mm (1.65 inch) piston and uses a 15 inch solid nonvented brake rotor. The brake rotor is described as a drum-in-hat style because of its dual role as a braking disc and parking brake drum.
The parking brake system on vehicles equipped with rear disc brakes consists of a small duo-servo drum brake mounted to the caliper adapter and uses the interior of the rear disc brake rotor as a drum (hat section of drum-in-hat style brake rotor).

OPERATION
The rear disc brakes operate similarly to front disc brakes, however, there are some features that require different service procedures.
The disc brake caliper is mounted at the 12 O'clock position. It floats on rubber bushings using threaded guide pin bolts which are attached to the back side of the adapter.






The adapter and rotor shield are mounted to the rear axle. The adapter is used to mount the parking brake shoes and actuating cables for the parking brake system. The adapter is also used to mount the rear caliper and brake shoes. The adapter has two machined abutments which are used to position and align the caliper and brake shoes for movement inboard and outboard.
The inside of each rear brake rotor is used as the drum for the parking brake system for vehicles equipped with rear disc brakes. When the parking brake is applied, the parking brake shoes expand out against a braking surface on the inside of the brake rotor.