TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 73 of 1207
TM 9-2320-361-20
1-21. COMPRESSED AIR AND BRAKE SYSTEM OPERATION
The compressed air and brake system takes filtered air, compresses it, and supplies it to various
components that enable the operator to slow down or stop the vehicle. This system also supplies compressed
air to air-actuated accessories throughout the vehicle such as air horn and windshield wipers. These
components and accessories will be described as part of the following systems:
a. Compressed Air System Operation (page 1-60).
b. Brake System Operation (page 1-62).
a. Compressed Air System Operation.
AIR COMPRESSOR
- Draws in air, filters it, pressurizes it, and forces it into air reservoirs for
storage.
AIR HORN
- Receives air from the compressed air system in order to operate.
GOVERNOR
- Automatically opens or closes a valve inside air compressor to ensure a sufficient
quantity of compressed air is available for air system.
WINDSHIELD WIPER MOTOR
- Receives air from the compressed air system to actuate
windshield wipers.
PRESSURE GAGE
- Indicates amount of pressurized air available in the air system. Normal
pressure is 85-120 psi (586-827 kPa).
SAFETY VALVE
- Prevents excessive pressure to build up in air system by releasing air when
necessary.
AIR RESERVOIRS
- Store pressurized air for use in air system and traps water to protect air-
operated accessories from corrosion and freezing.
1-60
Back to Top
