TM-9-2320-361-10
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
OPERATOR'S MANUAL
DECEMBER 1988
TM-9-2320-361-10 - Page 49 of 392
TM 9-2320-361-10
1-31. AIR-HYDRAULIC BRAKE SYSTEM OPERATION
The air-hydraulic’ brake system of the M44A2 series vehicles uses compressed air
to assist operation of the hydraulic brakes by pressurizing hydraulic fluid, The
system includes the following major components:
AIR COMPRESSOR
— Supplies compressed air to air reservoirs, air
hydraulic brake system, trailer brake couplings, and windshield wiper
motors.
BRAKE PEDAL
— Activates air-hydraulic brake system.
TRAILER BRAKE COUPLINGS
— Allow vehicle and trailer brake systems
to work together when connected to a trailer.
AIR RESERVOIRS
— Store enough air pressure for normal brake
operation if main brake system fails or engine stalls. When air pressure in
reservoirs is low, a warning buzzer will sound in the driver’s compartment.
AIR RESERVOIR DRAINCOCKS
— Permits draining of excess moisture
and air from air reservoirs.
1-24
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