TM-9-2320-280-20-2
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 2 OF 3
JANUARY 1996
TM-9-2320-280-20-2 - Page 698 of 951
NOTE
The procedure for removing and installing all four coil springs are
basically the same. This procedure covers the left front coil spring.
NOTE
For rear coil spring replacement on M1037 and M1042 models, it
may be necessary to spread frame from body by positioning
prybar between hinge mount bracket and rear bumper to gain
access to shock absorber retaining pin nut.
1.
Remove capscrew (13), two washers (14), and stabilizer bar link (15) from lower control arm (12).
2.
Remove wheel (para. 8-3).
NOTE
Note direction of outer capscrews for installation.
3.
Remove four locknuts (9), washers (8), capscrews (10), and washers (8) from lower ball joint (7),
geared hub (6) and lower control arm (12). Discard locknuts (9).
4.
Place jack under lower control arm (12) and raise lower control arm (12) slightly to relieve tension
on shock pin (2).
5.
Remove locknut (5), pin (2), washer (3), and shock absorber (11) from spring seat (4) and collapse
shock absorber (11). Discard locknut (5).
NOTE
It may be necessary to loosen lower control arm capscrews to
allow lower control arm to be lowered.
6.
Pull geared hub (6) and ball joint (7) away from control arm (12), lower control arm (12), and
remove coil spring (1) from lower control arm (12) and shock absorber (11).
1.
Install coil spring (1) over shock absorber (11) and onto lower control arm (12) ensuring end of coil
spring (1) fits in spring pocket of lower control arm (12).
2.
Ensure coil spring (1) is aligned with spring seat (4) flange, and raise lower control arm (12).
3.
Extend shock absorber (11) into spring seat (4) and install washer (3), pin (2), and locknut (5).
Tighten locknut (5) to 300 lb-ft (407 N
.
m).
b. Installation
a. Removal
6-30. COIL SPRING REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Materials/Parts
Four locknuts (Appendix G, Item 128)
(Basic/A1 Series)
Four locknuts (Appendix G, Item 105)
(A2 Series)
Locknut (Appendix G, Item 106)
Sealing compound (Appendix C, Item 40)
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
• Hood raised and secured
(TM 9-2320-280-20-10) (front springs only).
M1037 and M1042 only:
• Shelter removed (para. 11-120)
(rear shock absorbers only).
• Lower control arm supported (para. 6-29)
(rear shock absorbers only).
TM 9-2320-280-20-2
6-66
Change 3
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