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 692 of 1469
ASSEMBLY - Continued
NOTE
Apply a light film of GAA grease to all parts prior to assembly.
7.
Align guide groove (Figure 3, Item 3) of two adjusting plungers (Figure 3, Item 7) with adjusting pawl holes
(Figure 3, Item 8) of adjusting plunger housing (Figure 3, Item 13).
8.
Install adjusting plungers (Figure 3, Item 7) in adjusting plunger housing (Figure 3, Item 13).
9.
Position two adjusting sleeves (Figure 3, Item 6) on adjusting plunger (Figure 3, Item 7).
NOTE
Adjusting pawls have teeth and flats on one end and chamfered edge on the other end. When
performing Step (4), ensure adjusting pawl is positioned with chamfer toward sleeve to align
pawl and sleeve teeth.
10.
Install two adjusting pawls (Figure 3, Item 9) and springs (Figure 3, Item 10) in adjusting plunger housing
(Figure 3, Item 13) with two gaskets (Figure 3, Item 11) and hollow screws (Figure
3,
Item
12). Tighten hollow
screws 15 to 20 lb-ft (20 to 27 N·m).
11.
Using adjusting bolt (Figure 3, Item 4), rotate adjusting sleeve (Figure 3, Item 6) and check for proper teeth
meshing. If teeth are properly meshing, a clicking sound and ratchet feel will be indicated. Remove adjusting
bolt.
12.
Position inner lip of two plunger seals (Figure 3, Item 5) over adjusting sleeves (Figure 3, Item 6). Using hammer
and 1-3/4 in. (44.45-mm) wrench socket, seat outer ring of plunger seals in adjusting plunger housing
(Figure
3,
Item
13).
TM 9-2320-272-23-3
0427
0427-7
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