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 172 of 452
USE OF TRANSMISSION GEAR RANGES (M915A1)
WARNING
Due to increased weight and raised center of gravity on
vehicles equipped with Crew Protection Kit, vehicle operator
must be aware of differences in driving characteristics and
adjust driving accordingly. Failure to comply may result in
damage to equipment or possible injury or death to
personnel. Seek medical attention in the event of an injury.
Never allow vehicle to coast in neutral (N) position. Engine
braking action is not available when transmission is out of
gear, and damage to equipment and possible injury or death
to personnel may result. Seek medical attention in the event
of an injury.
Do not start engine with parking brake control pushed in
(released). The vehicle could roll in either direction once
brake system reaches operating pressure and spring brakes
release. Always pull out parking brake control prior to
starting engine or damage to equipment and possible injury
or death to personnel may result. Seek medical attention in
the event of an injury.
NOTE
In low gear ranges 1, 1-2, 1-3, and 1-4, the transmission will
not upshift above the highest gear selected unless engine
governed speed is excessive.
1. Use reverse (R) position (1) to back up tractor. Stop tractor completely before
shifting gears from forward to reverse or from reverse to forward. Reverse has
only one gear and provides the greatest traction advantage.
2. Use neutral (N) position (Figure 5, Item 7) when starting engine and when tractor
will be left unattended with engine running and parking brake applied. The
neutral safety switch prevents engine from starting in all gear range positions
other than neutral.
TM 9-2320-273-10
0010
0010-6
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