TM-9-2320-273-10
TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; OPERATOR’S MANUAL
DECEMBER 2012
TM-9-2320-273-10 - Page 60 of 452
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - CONTINUED
M920
TRAILER RAMPS - There are two steel ramps mounted on the frame rails adjacent to
the fifth wheel. The trailer ramps help with alignment during coupling, and prevent the
trailer from contacting the vehicle frame or fifth wheel too low during coupling.
FIFTH WHEEL - A fifth wheel is mounted on the vehicle frame over the tandem rear
axles. Kingpin lock is air-actuated by a control lever in the cab.
WINCH CONTROLS - Controls used to operate the winch.
WINCH - Used to pull out stuck vehicles and for pulling trailers onto vehicle fifth
wheel.
EXHAUST STACK AND MUFFLER - The exhaust system stack and muffler, located
and supported by the right rear corner of the cab, routes engine exhaust above the cab.
FRONT DRIVING AXLE - The front axle, mounted to the front suspension assembly,
is a steering axle and driving axle.
BATTERY BOX - The battery box is located on the right frame rail below the cab
passenger door. The battery box contains four batteries and two steps for entering the
cab.
PUSHER AXLE - The pusher axle is a non-driving axle located directly in front of the
driving axle.
REAR DRIVING AXLES - The forward-rear and rear-rear axles are mounted to the
rear suspension assembly and function as driving axles of the vehicle.
MUD FLAPS - There is a mud flap mounted on each front fender and at the back of
the truck behind the rear tires.
TOWING PINTLE - The towing pintle, located at the center of the frame rear
crossmember, is provided for interface with trailers requiring a pintle.
TM 9-2320-273-10
0002
0002-26
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