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 1395 of 1469
REMOVAL
1.
Using hydraulic jack, raise vehicle at rear-rear axle differential housing (Figure 1, Item 14) and place jack stands
under wheel hubs (Figure 1, Item 5).
2.
Remove two nuts (Figure 1, Item 16), washers (Figure 1, Item 15), U-bolt (Figure 1, Item 6), and U-bolt bracket
(Figure 1, Item 9) from spring brake chamber (Figure 1, Item 13).
3.
Remove nut (Figure 1, Item 10), lockwasher (Figure 1, Item 11), two washers (Figure 1, Item 2), screw
(Figure
1,
Item
1), and spring brake chamber bracket (Figure 1, Item 12) from upper spring bracket
(Figure
1,
Item
4). Discard lockwasher.
4.
Remove two nuts (Figure 1, Item 26), washers (Figure 1, Item 25), U-bolt (Figure 1, Item 21), and U-bolt bracket
(Figure 1, Item 22) from service brake chamber (Figure 1, Item 20).
5.
Remove nut (Figure 1, Item 23), lockwasher (Figure 1, Item 24), two washers (Figure 1, Item 18), screw
(Figure
1,
Item
17), and service brake chamber bracket (Figure 1, Item 19) from upper spring bracket
(Figure
1,
Item
4). Discard lockwasher.
6.
Remove two nuts (Figure 1, Item 8), lockwashers (Figure 1, Item 7), and screws (Figure 1, Item 3) from upper
spring bracket (Figure 1, Item 4). Discard lockwashers.
M9189DAA
21
22
23
24
25
26
20
4
19
18
18
17
6
9
8
7
10
12
2
11
13
16
15
1
2
4
3
14
5
Figure 1.
Rear Axle Spring Seat Wear Pads and Upper Bracket Removal.
7.
Place hydraulic jack under spring seat (Figure 2, Item 6) and raise leaf spring assembly (Figure 2, Item 7) until
upper spring bracket (Figure 2, Item 1) is clear of axle housing (Figure 2, Item 3) and dowel pin
(Figure
2,
Item
5).
8.
Slide upper spring bracket (Figure 2, Item 1) from bottom leaf (Figure 2, Item 4) and remove from leaf spring
assembly (Figure 2, Item 7).
9.
Remove spring seat wear pad (Figure 2, Item 2) from upper spring bracket.
10.
Inspect spring seat wear pad (Figure 2, Item 2) for cracks. Replace spring seat wear pad if cracked.
11.
Inspect upper spring bracket (Figure 2, Item 1) for cracks. Replace upper spring bracket if cracked.
TM 9-2320-272-23-3
0541
0541-2
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