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 35 of 452
OPERATOR MAINTENANCE
EQUIPMENT DESCRIPTION
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES
WARNING
This vehicle has been designed to operate safely and
efficiently within the limits specified in the TM in
accordance with (IAW) AR 70-1. Operation beyond these
limits without written approval from the Commander, U.S.
Army TACOM Life Cycle Management Command, ATTN:
AMSTA-CG, Warren, MI 48397-5000, is prohibited. Failure
to comply may result in serious injury or death to personnel.
Seek medical attention in the event of an injury.
NOTE
If the vehicles are equipped with crew protection kit,
vehicles will be heavier than usual and weight increases will
change vehicle handling characteristics. Refer to Operation
Under Usual Conditions, WP 0006.
M915 AND M915A1
Capabilities of the M915 and M915A1 tractors are:
1. The M915 and M915A1 are capable of carrying maximum loads of 30,000 lb
(13,608 kg) on the fifth wheels, and have a towing capacity from its rear pintle of
50,000 lb (22,680 kg). The M915 and M915A1 have a maximum Gross Vehicle
Weight Rating (GVWR) of 50,000 lb (22,680 kg) and a Gross Combination
Weight Rating (GCWR) of 105,000 lb (47,627 kg).
2. While operating on Class I roads, the M915 and M915A1 can maintain speeds of
55 mph on level roads. The M915 can maintain 25 mph while ascending a 3.9
percent grade at GCWR, and the M915A1 can maintain 25 mph while ascending
a 3 percent grade at GCWR. They are capable of climbing a 17 percent grade at
GCWR in both forward and reverse directions, and can operate on side slopes up
to 10 percent where adequate traction is available. In addition, the M915A1 can
ford hard-bottom water crossings up to 20 in. (50.8 cm) in depth for 5 minutes
without damage or requiring maintenance before further operation.
3. Average cruising ranges at GCWR with a full tank of fuel (118 gal. (447 L)) vary
based on driving habits, climate, and road conditions. For example, during
highway operation under full power at 2,100 rpm, the fuel rate is 20.5–21.4 gal.
(77.6–81.0 L) per hour. Traveling at an average of 40 mph at GCWR results in a
300-mile operating range on a full tank.
4. The M915 and M915A1 are capable of operating in temperatures from
-25 to 125° F (-32 to 52° C) and can operate to -50° F (-46° C) with arctic engine
and personnel heater kits installed.
TM 9-2320-273-10
0002
0002-1
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