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 696 of 951
6-29. LOWER CONTROL ARM 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)
Two locknuts (Appendix G, Item 89)
Sealing compound (Appendix C, Item 40)
Personnel Required
One mechanic
One assistant
Manual References
TM 9-2320-280-24P
Equipment Condition
• Wheel removed (para. 8-3).
• Shock absorber removed (para. 6-31).
General Safety Instructions
Lower control arm must be supported during
removal and installation.
TM 9-2320-280-20-2
6-64
Change 3
NOTE
The procedures for removing and installing the front and rear
lower control arms are basically the same. This procedure covers
the left front lower control arm.
WARNING
Lower control arm must be supported during removal and
installation. Failure to support lower control arm may cause
injury to personnel or damage to equipment.
NOTE
Note direction of outer capscrews for installation.
1.
Remove four locknuts (7), washers (6), capscrews (9), and washers (6) from lower ball joint (5),
geared hub (4) and lower control arm (8). Discard locknuts (7).
2.
Remove capscrew (14), two washers (12), and bar link (13) from lower control arm (8).
3.
Raise and support lower control arm (8) and pull geared hub (4) away.
4.
Lower the lower control arm (8) and remove coil spring (10).
5.
Remove two locknuts (3), washers (2), capscrews (1), washers (2), and lower control arm (8) from
brackets (11). Discard locknuts (3).
NOTE
On lower control arms, capscrew heads are toward front of
vehicle.
1.
Install lower control arm (8) on brackets (11) with two washers (2), capscrews (1), washers (2), and
locknuts (3).
2.
Install coil spring (10) on lower control arm (8) ensuring end of coil spring (10) fits in spring pocket
of lower control arm (8).
WARNING
Lower control arm must be supported during removal and
installation. Failure to support lower control arm may cause
injury to personnel or damage to equipment.
3.
Raise lower control arm (8) to align with geared hub (4) and ball joint (5) ensuring lower ball
joint (5) is placed below lower control arm (8).
b. Installation
a. Removal
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