Stabilizer Bar Replacement - Hummer H1 Service Manual

9-2 Axles, Suspension, and Frame
SUSPENSION SYSTEM DESCRIPTION
The HUMMER suspension system consists of a heavy-duty
coil spring, a heavy-duty hydraulic shock absorber, and an up-
per and lower control arm at each wheel. This suspension sys-
tem provides for a smoother ride and allows for more positive
control of the vehicle.
Ball joints allow the control arms and geared hubs to change
angles for smooth steering during turns. A stabilizer bar is lo-
cated on the front suspension to aid in stabilizing the vehicle
when it is turning. Each end of the stabilizer bar is attached to
the lower control arms (Figure 9-1).
COIL
SPRING
SHOCK
ABSORBER
LOWER
CONTROL
ARM
Figure 9-1: Suspension System

STABILIZER BAR REPLACEMENT

Removal
NOTE: Stabilizer bar must be removed from bar links at each
end of lower control arms.
1. Remove two locknuts, three washers, and pin securing bar
link to stabilizer bar (Figure 9-2).
2. Remove two locknuts, washers, clamp, and stabilizer bar
from frame bracket.
3. Remove bushing from stabilizer bar.
Installation
1. Install bushing on stabilizer bar (Figure 9-2).
2. Install stabilizer bar on frame bracket with clamp, two
washers, and locknuts. Tighten locknuts to 60 lb-ft
(81 N•m).
3. Install stabilizer bar on bar link with pin, three washers,
and two locknuts. Tighten locknuts to 75 lb-ft (102 N•m).
___________________________________________
UPPER
CONTROL
ARM
BALL
JOINT
GEARED HUB
PIN
BAR LINK
Figure 9-2: Stabilizer Bar Replacement
STABILIZER BAR LINK REPLACEMENT
Removal
1. Remove locknut and two washers securing bar link to sta-
bilizer bar (Figure 9-3).
2. Remove bolt, two washers, and bar link from lower
control arm.
Installation
1. Apply thread-locking compound to threads of bolt. Install
bar link to lower control arm with two washers and bolt.
Tighten bolt to 70 lb-ft (95 N•m) (Figure 9-3).
2. Install bar link on stabilizer bar with two washers and
locknut. Tighten locknut to 75 lb-ft (102 N•m).
BAR LINK
CONTROL ARM
Figure 9-3: Stabilizer Bar Link Replacement
FRAME
BRACKET
STABILIZER
BAR
BUSHING
STABILIZER
BAR
LOWER
®