TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 75 of 1337
TM 9-2320-260-20
I
1-21. COMPRESSED AIR AND AIR-HYDRAULIC BRAKE SYSTEM OPERATION
The compressed air and air-hydraulic brake system takes compressed filtered air and supplies it to
various components enabling the operator to slow down or stop the vehicle. Compressed air is also supplied
to air-actuated accessories throughout the vehicle such as the air horn, windshield wipers, and auxiliary
air supply valve. Components and accessories of the compressed air and air-hydraulic brake system are
described as part of the following systems:
a. Compressed Air System Operation (page 1-62).
b. Air-Hydraulic Brake System Operation (page 1-63).
a. Compressed Air System Operation.
A
B
C
D
E
AIR HORN
- Receives air from the compressed air system and is electrically activated to
sound off.
GOVERNOR
- Automatically opens and closes a valve in the air pressure compressor to ensure
a sufficient supply of compressed air is available for the system.
AIR PRESSURE GAGE
- Indicates the amount of air pressure present in the compressed air
system. Normal pressure is 90-120 psi (621-827 kPa).
AIR RESERVOIRS
- Store pressurized air for use in the compressed air system and traps water
to protect air-actuated accessories from corrosion and freezing.
AIR COMPRESSOR
- Draws in filtered air, pressurizes it, and forces it into air reservoirs for
storage.
1-62
Back to Top
