TM-9-2320-272-23-3
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 3 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-3 - Page 1205 of 1469
WORM SHAFT ADJUSTMENT
1.
Loosen jamnut (Figure 3, Item 3) on worm shaft adjusting screw (Figure 3, Item 4) on front of steering gear
(Figure 3, Item 2).
2.
Loosen worm shaft adjusting screw (Figure 3, Item 4) one full turn counterclockwise.
3.
Tighten worm shaft adjusting screw (Figure 3, Item 4) 5 to 6 lb-ft (7 to 8 N·m).
4.
Holding adjusting screw (Figure 3, Item 4), tighten jamnut (Figure 3, Item 3) 70 to 80 lb-ft (95 to 109 N·m).
1
5
4
3
2
M9528DAA
Figure 3.
Worm Shaft Adjustment (On-Vehicle).
NOTE
Assistant will rotate steering wheel.
5.
Rotate steering wheel (Figure 4, Item 1) slightly in both directions and check for pulsations. If pulsations are
felt, repeat Steps (1) through (5).
TM 9-2320-272-23-3
0509
0509-4
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