Air Brake System Description. GMC Truck GMC C-Series Medium Duty Truck B7 1998

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC C-Series Medium Duty Truck B7 🢒 Brakes 🢒 Air Brakes 🢒 Air Brake System Description

Air Brake System Description Air Brake System

The air brake system includes the following components :

•	The air brake dryer

•	The brake pedal

•	The low air pressure switch

•	The dual air pressure gauge

•	The air lines

•	The reservoirs

•	The trailer air brake couplings

•	The stoplamp switch

•	The trailer stoplamp switch

•	The alcohol injector

A piston type air compressor supplies air to the system. Refer to Air Compressor and Governor for on-vehicle service information of the air compressor and the governor.

The air brake valves direct and control the air flow . Refer to Air Brake Valve Service Repair for information of the air brake valves.

The air foundation brakes are cam type. The camshaft, automatic slack adjuster, and air brake chamber apply the air foundation brakes. The parking brake valve, located in the cab, control the spring brake chambers. The spring brake chambers activate the parking brakes at the rear wheels. Refer to Air Compressor and Governor for on-vehicle service information of brake components located at the wheels.