EQUIPMENT DESCRIPTION AND DATA
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES
The M915A3 Tractor Truck is used to transport M871, M872, and M1062 semitrailers on line haul missions.
It has a Gross Vehicle Weight Rating (GVWR) of 52,000 lb (23,608 kg) and is equipped with a two-way oscillat-
ing, sliding fifth wheel compatible with a two-inch kingpin. Maximum towed load on kingpin is 30,000 lb (13,620
Capabilities and Features.
While operating on Class I roads, the fully loaded M915A3 can maintain a speed of 65 mph (105 kph) on level
roads and 29 mph (47 kph) while ascending a 3 percent grade. It has a minimum turning diameter, curb-to-curb, of
53 ft 9 in (16.4 m).
Average cruising ranges at Gross Combination Weight Rating (GCWR) with a full tank of fuel will vary based on
conditions (e.g., varying loads, prolonged idle, and climatic conditions). Cruising range is optimally 400 miles
The M915A3 is equipped with an instrument panel mounted speedometer and tachometer which register truck
ground speed and engine speed.
The M915A3 has the following capabilities and features:
air-activated front and rear non-asbestos cam brakes with a four-channel anti-lock brake system (ABS) to
provide significantly improved handling and braking during emergency stops
operation in temperatures from -25°F (-32°C) to +125°F (+52°C), and to -40°F (-40°C) with arctic kit
start and climb capability of a 20 percent grade at GCWR in both forward and reverse directions
fording capability up to 20 in (51 cm) deep for 5 minutes without damage or requiring maintenance before
operations can continue
two-passenger aluminum corrosion-proof cab with a 90 degree tilt-forward hood for service accessibility
six cylinder, 12.7 liter, 430 horsepower, in-line turbocharged diesel engine built by Detroit Diesel
Allison HD 4560P six-speed automatic transmission
Collision Warning System (CWS) that warns the driver of potentially dangerous driving situations by acti-
vating visual and audible alerts.
For operation in arctic conditions, the M915A3 can be equipped with an arctic heater mounted under the cab,
above the battery box. This provides heat for the cab and engine cooling system. The arctic heater may be operated
prior to starting the engine to provide preheating of engine block.