Section 06-00: Brake System, Service | 1996 F-150, F-250, F-350, F-Super Duty Chassis Cab, Motorhome Chassis and Bronco Workshop Manual |
On brake master cylinder or dash-mounted power brake booster equipped vehicles, the brake systems are designed to permit a full stroke of the brake master cylinder (2140) when the brake pedal (2455) is fully depressed. A brake pedal clearance adjustment is not required.
For proper brake pedal adjustment on F-Super Duty Motorhome vehicles, refer to Section 06-06.
To release the brakes, fluid must flow back to the master cylinder through a return port when pedal pressure is released. To be sure the piston moves back far enough to expose the return port, free-travel is in to the pedal linkage on standard booster systems. This prevents the piston from becoming trapped in a partially released position. Pedal-free travel is not always perceptible in dash-mounted power brake booster systems, because the operating clearance for the piston is adjusted at the booster push rod, rather than the brake pedal linkage. Refer to Section 06-07A for instructions on dash-mounted booster push rod adjustment.