Hummer H1 Service Manual page 410

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UPPER
CONTROL
ARM
Camber Adjustment
Camber adjustment applies to the front and rear wheels
equally. It is controlled by turning the pivot bolts and eccentric
washers on the upper control arm brackets (Figure 6-43).
Preferred camber for all Hummer vehicles is zero to +0.5 de-
gree at the front and +0.25 to +0.75 degrees at the rear. Maxi-
mum allowable side-to-side variation is 0.5 degree front and
rear.
1. Support the vehicle weight with the tires on the turntables
and leave the hood closed.
2. Loosen upper control arm pivot bolt nuts by holding the
bolt head and turning the nut to allow movement of the
bolts (Figure 6-43).
05745159
Wheels and Tires/Central Tire Inflation System (CTIS)
PIVOT
BOLT
Figure 6-43: Caster /Camber Adjustment
FLAT
ECCENTRIC
WASHER
UPPER CONTROL
ARM BRACKET
BUSHING
3. Pry the upper control arm brackets open to allow freedom
of movement of the control arm bushings. The edges of
the control arm bushings are serrated and will be difficult
to move if the brackets are not pried open.
4. Adjust camber angle by rotating the front eccentric of the
upper control arm bracket (Figure 6-43).
• Rotating the front eccentrics inward decreases camber
(negative direction) while rotating the front eccentrics
outward increases camber (positive direction).
• Rotating the rear eccentrics of each upper control arm
inward or outward in conjunction with the front eccen-
trics will help maintain the previously set caster angle.
5. Tighten control arm pivot bolts to 260 lb-ft (359 N•m)
torque.
6-27
PIVOT
BOLT
NUT
ECCENTRIC
REFERENCE
HOLE