Hummer H1 (2006+). Manual — part 282

9-106 Axles, Suspension and Frame

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Figure 9-157: Front Suspension Rear Crossmember Replacement

13. Install the right front caliper-to-tee brake line.

14. Install the right front upper control arm.

15. Install the lower radiator tube.

16. Fill, bleed and leak test cooling system.

Rear Suspension Front Crossmember Replacement

Removal

1.

Remove the rear-front tie down brackets.

2.

Remove the axle (Refer to section 6).

3.

Remove the axle support brackets and the side mounting brackets.

4.

Remove the rear lower control arms.

5.

Remove the three bolts and the clamps securing the brake line and the two vent lines to the front crossmember (Figures 9-158
and 9-160).

6.

Remove the brake line from the tee and the tube coupling.

VENT LINE BRACKET

CROSSMEMBER

REAR CROSSMEMBER

MOUNTING

BRACKET

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Axles, Suspension and Frame 9-107

Figure 9-158: Brake Line and Tube Coupling Location

7.

Remove the two locknuts, washers, bolts, washers and the two radius rods from the crossmember mounting brackets (Figure
9-160).

WARNING: To avoid personal injury, support the crossmember during removal.

8.

Loosen the six locknuts securing the front crossmember to crossmember mounting brackets.

9.

Slide the front crossmember down and out from under the vehicle.

10. Remove the six locknuts, washers, bolts, washers and the two crossmember mounting brackets from the front crossmember.

Figure 9-159: Brake Line and Vent Lines Location

TUBE COUPLING

BRAKE LINE

FRONT CROSSMEMBER

BRAKE

FRONT

LINE

CROSSMEMBER

9-108 Axles, Suspension and Frame

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Figure 9-160: Front Crossmember Assembly Replacement

Installation

1.

Install the two crossmember mounting brackets on the front crossmember with the six washers, bolts, washers and the lock-
nuts. Tighten the locknuts to 90 lb-ft. (122 N•m) (Figure 9-160).

2.

Install the front crossmember on the frame rails.

3.

Install the rear-front tie down brackets.

4.

Install the radius rods in the crossmember mounting brackets with the two washers, bolts, washers and the locknuts. Tighten
the locknuts to 260 lb-ft. (353 N•m).

5.

Install the brake line on the tee and the tube coupling (Figures 9-158, and 9-160).

6.

Secure the brake line and the two vent lines to the front crossmember with the three clamps and the bolts (Figure 9-159).

7.

Install the axle support brackets and the side mounting brackets.

8.

Install the axle.

9.

Install the rear lower control arms.

10. Bleed the rear brakes.

FRONT

CROSSMEMBER

RADIUS ROD

CROSSMEMBER

MOUNTING BRACKET

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Axles, Suspension and Frame 9-109

Rear Bumper Replacement

Removal

1.

Remove the rear license plate bracket (Refer to section 10).

2.

Remove the trailer hitch, if equipped (Refer to section 13).

3.

Remove the two locknuts, washers, bolts and the washers securing the trailer harness to the rear bumper (Figure 9-161).

4.

Disconnect the trailer harness from the body harness and pull the trailer harness through the hole in the rear bumper.

5.

Remove the four locknuts, washers, bolts and the washers securing the two tie down brackets to the rear bumper, two
mounting brackets and the outer mounting brackets.

6.

Remove the eight bolts, washers and the rear bumper from the two mounting brackets.

Installation

1.

Install the rear bumper on the two mounting brackets and secure with the eight washers and the bolts. Do not tighten the bolts
(Figure 9-161).

2.

Install the two tie down brackets on the rear bumper, two mounting brackets and the outer mounting brackets, with the four
washers, bolts, washers and the locknuts. Do not tighten the locknuts.

3.

Tighten the bolts installed in step 1 and the locknuts installed in steps 2, 3 and 4 to 90 lb-ft. (122 N•m).

4.

Insert the trailer harness through the hole in the rear bumper and connect the trailer harness to the body harness.

5.

Secure the trailer harness to the rear bumper with the two washers, bolts, washers and the locknuts.

6.

Install the trailer hitch, if removed.

7.

Install the rear license plate bracket.

Figure 9-161: Rear Bumper Replacement

MOUNTING

REAR BUMPER

OUTER

TIE DOWN BRACKET

BODY HARNESS

REAR BUMPER

TRAILER HARNESS

MOUNTING

BRACKET

BRACKET