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 651 of 1469
MAJOR ADJUSTMENT
1.
Remove transfer case to forward rear axle propeller shaft (WP
0401) or (WP
0400).
2.
Loosen adjusting nut (Figure 3, Item 4) on parking brake cable (Figure 3, Item 1) until parking brake lever
(Figure 3, Item 3) has free travel.
3.
Push parking brake lever (Figure 3, Item 3) clockwise with one hand while turning drum (Figure 3, Item 2)
clockwise with other hand. If drum turns freely when parking brake lever is pushed clockwise, replace parking
brake shoes. If drum stops, go to Step (3).
NOTE
Assistant will help with Step (3).
4.
Pull parking brake lever inside vehicle cab up to engage (Figure 2, Item 3).
5.
Tighten adjusting nut (Figure 3, Item 4) on parking brake cable (Figure 3, Item 1) against parking brake lever
(Figure 3, Item 3) until drum (Figure 3, Item 2) does not move, then back off counterclockwise 1/2 turn.
6.
Repeat Step (1) until slight drag of brake shoes against drum (Figure 3, Item 2) is observed.
7.
Install transfer case to forward rear axle propeller shaft (WP
0401) or (WP
0400).
M9200DAA
1
2
3
4
Figure 3.
Parking Brake Major Adjustment.
END OF TASK
TM 9-2320-272-23-3
0420
0420-4
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