Hummer H2. Manual — part 2183

5. Install the nut to the tennon end. Do not tighten the nut.

6. Support the lower control arm at curb height.

7. Hold the tennon end with a wrench while torquing the nut.

Tighten: Tighten the nut to 20 N.m (15 lb ft).

8. Lower the vehicle.

SHOCK ABSORBER DISPOSAL

1. Make an indentation 10 mm (0.4 in) from the bottom (4) of the tube (3) using a centerpunch.

CAUTION: Gas charged shock absorbers contain high pressure gas. Do not remove

the snap ring from inside the top of the tube. If the snap ring is removed,
the contents of the shock absorber will come out with extreme force which
may result in personal injury.

CAUTION: To prevent personal injury, wear safety glasses when centerpunching and

drilling the shock absorber. Use care not to puncture the shock absorber
tube with the centerpunch.

2004 Hummer H2

2004 SUSPENSION Front Suspension - Hummer H2

2004 Hummer H2

2004 SUSPENSION Front Suspension - Hummer H2

Fig. 37: Making Indentation 10 mm (0.4 in) From Bottom Of Tube
Courtesy of GENERAL MOTORS CORP.

2. Clamp the shock absorber in a vise horizontally with the shock absorber rod (1) completely extended.

3. Drill a hole in the shock absorber at the centerpunch (4) using a 5 mm (3/16 in) drill bit. Gas or a gas/oil

mixture will exhaust when the drill bit penetrates the shock absorber. Use shop towels in order to contain
the escaping oil.

4. Make an indentation in the middle (2) of the tube (3) with a centerpunch.

5. Drill a second hole in the shock absorber at the centerpunch (2) using a 5 mm (3/16 in) drill bit. Oil will

exhaust when the drill bit penetrates the shock absorber. Use shop towels in order to contain the escaping
oil.

6. Remove the shock absorber from the vise. Hold the shock absorber over a drain pan horizontally with the

holes down. Move the rod (1) in and out of the tube (3) to completely drain the oil from the shock
absorber.

DESCRIPTION AND OPERATION

GENERAL DESCRIPTION

All models have a front suspension that consists of the following components:

z

Upper and lower control arms

z

Stabilizer shaft

z

Shock absorbers

z

Torsion bars (right and left side)

The stabilizer shaft controls the side roll of the vehicle. This shaft is mounted in rubber insulators that are held
to the frame with a bracket. The ends of the stabilizer shaft connect to the lower control arms with insulator
assemblies.

The upper ball stud assembly is press fit into the upper control arm. The assembly attaches to the steering
knuckle with a prevailing torque nut.

The upper ball studs are not replaceable.

The lower ball stud assembly is pressed into the outer end of the lower control arm. A prevailing torque nut
joins the steering knuckle to the lower ball stud.

The upper and the lower control arms have pressed-in bushings. The bolts pass through the bushings and join
the arms to the frame.

All ball studs have grease fittings.

All front wheel bearings are sealed. These bearings are pre-adjusted and need no lubrication.

2004 Hummer H2

2004 SUSPENSION Front Suspension - Hummer H2

SPECIAL TOOLS AND EQUIPMENT

SPECIAL TOOLS

Special Tools

Illustration

Tool Number/Description

J 36202

Torsion Bar Loading/Unloading Tool

J 43631

Ball Joint Remover

J 45851

Ball Joint Separator Protector Adaptors

2004 Hummer H2

2004 SUSPENSION Front Suspension - Hummer H2