Hummer H1 (2002+). Manual - part 146

 

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Hummer H1 (2002+). Manual - part 146

 

 

________________________________________

 Axles, Suspension, and Frame  9-45

®

05745159

FRONT BUMPER AND TOWING BRACKETS 
REPLACEMENT (VEHICLES WITHOUT WINCH)

Removal 

1.

Remove brushguard, if equipped.

2.

Remove four locknuts, washers, bolts, washers, two
towing brackets, and front bumper from mounting
brackets (Figure 9-115).

Installation 

1.

Install front bumper and two towing brackets on mounting 
brackets with four washers, bolts, washers, and locknuts. 
Tighten bolts to 90 lb-ft (122 N•m) (Figure 9-115).

2.

Install brushguard, if removed (Section 10).

Figure 9-115:   Front Bumper and Towing Bracket Re-

placement for Vehicles Without Winch

FRONT BUMPER AND TOWING BRACKETS 
REPLACEMENT (VEHICLES WITH WINCH)

Removal 

WARNING:  Winch must be supported prior to per-
forming step 1. Failure to observe this warning could
result in personal injury.

1.

Remove four bolts and washers securing winch to front 
bumper (Figure 9-116).

2.

Remove four locknuts, washers, bolts, washers, and two
towing brackets from front bumper and frame extensions.
Discard locknuts.

3.

Remove five locknuts, washers, six bolts, washers, and
front bumper from frame extensions.

Installation 

1.

Install front bumper on frame extensions with six washers, 
bolts, five washers, and locknuts. Tighten bolts to 90 lb-ft 
(122 N•m) (Figure 9-116).

2.

Install two towing brackets on front bumper and frame
extensions with four washers, bolts, washers, and
locknuts. Tighten bolts to 90 lb-ft (122 N•m).

3.

Install four bolts and washers securing front bumper to
winch. Tighten bolts to 60 lb-ft (81 N•m).

Figure 9-116:   Front Bumper and Towing Bracket Re-

placement for Vehicles With Winch

FRONT BUMPER

TOWING

MOUNTING

BRACKET

BRACKET

FRAME EXTENSION

TOWING BRACKET

FRONT

BUMPER

9-46

Axles, Suspension, and Frame

_________________________________________

®

FRONT BUMPER MOUNTING BRACKET 
REPLACEMENT

Removal 

NOTE: 

Mark location of bolts for installation.

1.

Support hood in position with jacks.

2.

Remove three locknuts, washers, bolts, and washers
securing mounting bracket to frame rail (Figure 9-117).

3.

Remove two locknuts and plate securing mounting bracket
to hinge. 

4.

Remove two locknuts, washers, bolts, washers, towing
bracket, and mounting bracket from front bumper. 

Installation 

1.

Install mounting bracket and towing bracket on front 
bumper with two washers, bolts, washers, and locknuts. 
Do not tighten locknuts (Figure 9-117).

2.

Install mounting bracket on frame rail with three washers,
bolts, washers, and locknuts. Do not tighten locknuts.

3.

Install mounting bracket on hinge with plate and two
locknuts.

4.

Tighten hinge locknuts to 28 lb-ft (38 N•m), front bumper
locknuts to 90 lb-ft (122 N•m), and frame rail locknuts to
178 lb-ft (241 N•m).

5.

Remove jacks supporting hood.

Figure 9-117:   Front Bumper Mounting Bracket Re-

placement

RADIATOR FRONT MOUNT BRACKET 
REPLACEMENT

Removal 

1.

Remove locknut, washer, bolt, washer, and spacer securing 
radiator to front mount bracket (Figure 9-118).

2.

Remove two locknuts, washers, bolts, washers, and front
mount bracket from suspension crossmember. 

3.

Remove mount from front mount bracket.

Installation 

1.

Install mount in front mount bracket  (Figure 9-118).

2.

Install front mount bracket on suspension crossmember
with two washers, bolts, washers, and locknuts. Tighten
locknuts to 90 lb-ft (122 N•m).

3.

Install radiator on front mount bracket with spacer,
washer, bolt, washer, and locknut. Tighten locknut to 30
lb-ft (41 N•m).

Figure 9-118:   Radiator Front Mount Bracket 

Replacement

TOWING BRACKET

FRONT

PLATE

HINGE

FRAME RAIL

MOUNTING 

BUMPER

BRACKET

RADIATOR

MOUNT

FRONT 

SUSPENSION 

SPACER

CROSSMEMBER

MOUNT 

BRACKET

________________________________________

 Axles, Suspension, and Frame  9-47

®

05745159

LIFTING SHACKLE REPLACEMENT

Removal 

Remove cotter pin, slotted nut, bolt, spring washer, and shackle
from tiedown bracket. Discard cotter pin (Figure 9-119).

Installation 

1.

Install shackle on tiedown bracket with spring washer, 
bolt, and slotted nut. Tighten slotted nut enough to allow 
movement of shackle (Figure 9-119).

2.

Install cotter pin in slotted nut.

Figure 9-119:   Lifting Shackle Replacement

FRAME EXTENSION REPLACEMENT

Removal 

1.

Remove front bumper.

2.

Remove hood and hinge (Section 10).

3.

Remove two locknuts, washers, bolts, and washers
securing front suspension brace to frame extension
(Figure 9-120).

NOTE: 

Note position of winch cable bracket for installation.

4.

Remove three locknuts, washers, bolts, and washers
securing clamp mounting bracket, frame extension, and
bumper mounting bracket to frame.

Installation 

1.

Install bumper mounting bracket, frame extension, and 
clamp mounting bracket on frame with three washers, 
bolts, washers, and locknuts. Do not tighten locknuts 
(Figure 9-120).

2.

Secure front suspension brace to frame extension with two
washers, bolts, washers, and locknuts.

3.

Tighten all locknuts to 178 lb-ft (241 N•m).

4.

Install hinge and hood.

5.

Install front bumper.

Figure 9-120:   Frame Extension Replacement

TIEDOWN BRACKET

SHACKLE

FRAME

BUMPER

MOUNTING

BRACKET

FRAME

BRACKET

CLAMP MOUNTING

EXTENSION

9-48

Axles, Suspension, and Frame

_________________________________________

®

LEFT AIRLIFT BRACKET AND FRONT UPPER 
CONTROL ARM BRACKETS REPLACEMENT

Removal 

1.

Remove left engine splash shield (Section 10).

2.

Raise and support front of vehicle.

3.

Remove three screws and clamps securing harness to
airlift bracket (Figure 9-121).

4.

Remove two locknuts, washers, and bolts securing
radiator support to airlift bracket. 

WARNING:  To avoid personal injury or equipment
damage, support lower control arm during removal and
installation.

5.

Remove two locknuts, washers, bolts, washers, and upper
control arm from two control arm brackets. 

NOTE: 

Note direction of bolts for installation.

6.

Remove eight locknuts, washers, bolts, washers, two
control arm brackets and shim(s) from airlift bracket. 

7.

Remove two bolts, washers, and airlift bracket from frame
rail.

Installation 

1.

Install airlift bracket, shim(s) and two control arm brackets 
on frame rail with eight washers, bolts, washers, and lock-
nuts. Tighten locknuts to 90 lb-ft (122 N•m) (Figure 9-121).

2.

Apply thread-locking compound to two bolt holes and
secure airlift bracket and control arm brackets to frame rail
with two washers and bolts. Tighten bolts to 90 lb-ft (122
N•m).

3.

Install upper control arm on control arm brackets with cam
washers, bolts, washers, and locknuts. Tighten locknuts to
260 lb-ft (353 N•m).

4.

Secure radiator support to airlift bracket with two bolts,
washers, and locknuts. Tighten locknuts to 37 lb-ft (50
N•m).

5.

Secure harness to airlift bracket with three clamps and
screws.

6.

Lower front of vehicle.

7.

Install left engine splash shield.

Figure 9-121:   Left Airlift Bracket and Front Upper Control Arm Bracket Replacement

RADIATOR

SUPPORT

AIRLIFT BRACKET

HARNESS

UPPER CONTROL ARM

FRAME RAIL

CONTROL ARM

BRACKET

SHIM(S)

 

 

 

 

 

 

 

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