TM 9-2330-379-14&P
Section III PRINCIPLES OF OPERATION
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Air Brake System.......................................................1-13
Hydraulic Lift System.................................. 1-14
AIR BRAKE SYSTEM
INTERVEHICULAR EMERGENCY HOSE - Supplies air from the towing vehicle to the dolly set to fill the air reservoirs and
initiates an emergency brake application.
INTERVEHICULAR SERVICE HOSE - Provides an air pressure signal from the towing vehicle which can tell the
emergency relay valves to apply or release the dolly set brake system.
AIR RESERVOIRS - Separate reservoirs on front and rear dollies provide the air pressure supply to apply the brakes.
(Also, separate air reservoir on rear dolly for parking brake.)
EMERGENCY RELAY VALVE (One on front dolly and one on rear dolly) - Applies and releases the dolly set braking
system.
PARKING BRAKE - Hand activated lever to control mechanized spring brakes (parking brake) on rear dolly wheels.
BRAKE ASSEMBLIES - Operated by air pressure to stop the dolly set. There is one brake assembly on each wheel.
(Rear brakes also actuated from manually operated parking brake lever for the two rear dolly brake assemblies.)
1-13
