TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 1023 of 1258
20-4.
STEERING ALIGNMENT (Cont'd)
1.
Remove wheel (TM 9-2320-280-20).
2.
Remove two locknuts (7), washers (2), capscrews (1), and washers (2) from upper control arm (8) and
mounting brackets (3). Discard locknuts (7).
3.
Loosen two capscrews (6) and four nuts (5) on two mounting brackets (3) and airlift bracket (4).
NOT E
Shims are available in 0.06-in. (1.52 mm) and 0.12-in. (3.05 mm)
thicknesses.
4.
Add or subtract shim(s) (9) as required to bring caster and/or camber withing specifications
(table 20-1 or 20-2). Suspension alignment change in relation to shim selection is shown in table 20-3.
b. Caster and Camber Adjustment
NOT E
Caster and camber adjustments are basically the same for all four
wheels. This procedure covers the right front wheel.
NOT E
• Subtracting shims will affect caster/camber in the opposite direction
as compared to adding shims.
• For 0.06-in. (1.52-mm) shims, reduce the values in the table by half.
• For larger changes, combinations of additions or subtractions will
provide desired results.
FRONT SUSPENSION
LOCATION
SHIM
CASTER
CAMBER
REAR SUSPENSION
LOCATION
SHIM
CASTER
CAMBER
Front shim only
+0.12 in. (3.05 mm)
+0.5°
-0.1°
Rear shim only
+0.12 in. (3.05 mm)
-0.5°
+0.6°
Front and rear shims
+0.12 in. (3.05 mm)
0.0°
+0.5°
Front shim only
+0.12 in. (3.05 mm)
+0.6°
+0.5°
Rear shim only
+0.12 in. (3.05 mm)
-0.6°
0.0°
Front and rear shims
+0.12 in. (3.05 mm)
0.0°
+0.5°
5.
Tighten two capscrews (6) and four nuts (5) on two mounting brackets (3) to 90 lb-ft (122 N
•
m).
6.
Install upper control arm (8) on mounting brackets (3) with two washers (2), capscrews (1),
washers (2), and locknuts (7). Tighten locknuts (7) to 260 lb-ft (353 N
•
m).
7.
Install wheel (TM 9-2320-280-20).
8.
Go to task a, and repeat steps 1 through 3.
Table 20-3. Suspension Alignment Change.
TM 9-2320-280-34
2 0 - 2 2
Change 1
Back to Top
