Description & Operation
WARNING:
For warnings and procedures regarding vehicles equipped with Anti-Lock Brake Systems (ABS), see appropriate ANTI-LOCK BRAKES article.
NOTE:
Pickup in this article includes Cab and Chassis (C & C) with Single Rear Wheels (SRW) and Dual Rear Wheels (DRW).
The hydraulic brake system uses a tandem master cylinder with a vacuum power assist servo. All models are equipped with front disc and rear drum brakes.
A load-sensing proportioning valve is used on some models to regulate brake pressure between front and rear brakes. The rear brakes on all models are self-adjusting.
The parking brake lever mechanically activates rear brakes. On models with rear drum brakes, a cable applies rear shoes.