TM-9-2320-272-10
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; OPERATOR'S MANUAL
SEPTEMBER 2004
CHANGE 2
TM-9-2320-272-10 - Page 113 of 481
TM 9-2320-272-10
2-14
2-3. CHASSIS CONTROLS AND INDICATORS (Contd)
Key
Item and Function
1
TRAILER POWER OUTLET RECEPTACLE provides electric power for
trailer.
2
TOWING PINTLE HOOK is opened to attach trailer towing bar.
3
TRAILER SERVICE AIR COUPLING is connected by an air coupling hose
to the service coupling of a trailer or vehicle to be towed. This connection
permits operator to engage brakes of the towed load when pressing brake
pedal of the towing vehicle.
4
TRAILER AIR VALVE HANDLES are turned to release compressed air to
trailer brake system.
5
EMERGENCY AIR COUPLING is connected by an air coupling hose to the
emergency coupling of a trailer or vehicle to be towed. This connection
permits towing vehicle to charge the brake system of a trailer or disabled
vehicle with air.
Back to Top
