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 194 of 452
OPERATING PUSHER AXLE (M917, M919, AND M920) - CONTINUED
When operating the M917, M919, and M920 with payload on a highway, use (lower)
pusher axle to comply with local requirements regarding maximum allowable load per
axle.
Lowering Pusher Axle
1. Rotate CONTROL PRESSURE valve knob (Figure 18, Item 1) to the full left
position (toward –) until pressure gauge (Figure 18, Item 2) reads 0 psi.
2. Place pusher axle control lift knob (Figure 18, Item 3) in AXLE DOWN position.
Adjusting Load On Pusher Axle
1. Refer to pusher axle air pressure load chart located in vehicle glove box
(Figure 19 or 20) and determine required pressure setting.
2. Rotate CONTROL PRESSURE valve knob (Figure 18, Item 1) right (toward +)
until pressure gauge (Figure 18, Item 2) indicates proper pressure setting for
desired load.
3. Using screw driver, tighten setscrew (Figure 18, Item 4) at center of CONTROL
PRESSURE valve knob (Figure 18, Item 1) to lock knob in position at selected
pressure.
4. With setscrew (Figure 18, Item 4) tightened at selected pressure, CONTROL
PRESSURE valve knob (Figure 18, Item 1) can be closed (toward –) and reset to
previous setting.
Raising Pusher Axle
1. Place pusher axle control lift knob (Figure 18, Item 3) in AXLE LIFT position.
This should be done when turning sharp corners to shorten turning radius and
avoid dragging tires. This can be done when the vehicle is in motion.
Figure 18. Pusher Axle Controls.
AXLE
LIFT
AXLE
DOWN
10
40
60
80
100
120
140
160
CONTROL
PRESSURE
GRANNING
SUSPENSIONS
1
2
3
4
TM 9-2320-273-10
0010
0010-28
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