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 173 of 452
USE OF TRANSMISSION GEAR RANGES (M915A1) - CONTINUED
3. Use 1-5 position (Figure 5, Item 6) for all normal driving conditions. When
driving in 1-5 position (Figure 5, Item 6), the transmission will start in 1st gear,
and as the accelerator is depressed, the transmission will upshift to 2nd, 3rd, 4th,
and 5th gears automatically. As the tractor is slowed, the transmission will
downshift to the correct gear automatically
4. Use 1-4 position (Figure 5, Item 2), 1-3 position (Figure 5, Item 3), or 1-2
position (Figure 5, Item 4) to limit the automatic shifting to a lower range when
road, load, or traffic conditions make it necessary or desirable to do so.
5. Use 1 position (Figure 5, Item 5) and R position (Figure 5, Item 1) when pulling
through mud and snow or driving on steep grades. This is low gear, and
maximum engine braking is accomplished in this position.
END OF TASK
Figure 5. Transmission Control Lever and Range Indicator.
1
2
3
4
5
6
7
TM 9-2320-273-10
0010
0010-7
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