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 62 of 452
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - CONTINUED
M915A1
FRONT SPOTTER MIRRORS - There is an adjustable convex mirror mounted on
each front fender. The left mirror is intended to provide a view of the area directly in
front of the vehicle, and the right mirror is intended to provide a view of the lower
right side of the vehicle.
BRUSH GUARD - There is a steel brush guard mounted on the front of the vehicle
designed to protect grille/headlight area.
ENGINE - Cummins NTC-400 BIG CAM III diesel engine used to power vehicle.
CLEARANCE MARKER LIGHTS - There are five amber lights mounted on the cab
top used to mark the vehicle cab. Lights are controlled by the headlamp switch.
AIR HORN - A single horn is mounted on the driver side cab top and is air operated.
SIDE VIEW MIRRORS - There is an adjustable side view mirror mounted on each cab
door used to view the area to the left and right of the vehicle and trailer when coupled.
WORK LAMP RECEPTACLE - There is a small receptacle with a removable rubber
dust cap on each side of the cab at the bottom outside corner adjacent to the door
handle. The receptacle is provided as a power supply for the 12 Volt work lamp.
DRIVING AXLES - The forward-rear and rear-rear axles are mounted to the rear
suspension assembly and function as driving axles of the vehicle.
SPRING BRAKE CHAMBERS - An air chamber, located at each wheel end on the
rear tandem axles, mechanically operates the rear brakes by releasing when air pressure
is raised and applying when air pressure is released.
FUEL TANK - The fuel tank is located on the left frame rail below the cab driver
door. The fuel tank supports the driver steps for entering the cab, which are welded to
the side of the tank.
FRESH AIR VENTS - There is a cab air vent on each side of the cab cowl. The vent
is opened and closed from inside the cab by a hand-operated lever.
FRONT AXLE - The front axle, mounted to the front suspension, is a nondriving front
axle.
TURN SIGNAL LIGHTS - There is a turn signal light mounted on top of each front
fender. The turn signal light has an amber lens facing the front of the vehicle and a red
lens facing the rear. This light also functions as a marker light.
BLACKOUT MARKER LIGHT - There is a light mounted above the service headlight
on each front fender for blackout lighting only.
SERVICE HEADLIGHTS - There is a combination high/low sealed beam headlight
mounted on each front fender for service lighting as required.
TM 9-2320-273-10
0002
0002-28
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