Hummer H1 (2006+). Instruction - page 263

9-30 Axles, Suspension and Frame

__________________________________________

Figure 9-49: Axle Housing Spreader Mounting

CAUTION: Over-spreading of the axle housing will damage the housing.

58. Spread the housing 0.010 in. (0.25 mm) and remove the dial indicator.

NOTE: Differential bearings must be preloaded to compensate for heat and loads during operation.

59. Preload the differential side bearings by increasing the shim thickness at each side of the differential assembly by 0.004 in.

(0.10 mm) for a total bearing preload of 0.008 in. (0.20 mm) (Figure 9-47).

60. Lubricate the side bearings with gear oil and install the differential assembly, bearing cups, shims and the bearing caps in the

housing and secure with the four bolts (Figure 9-47).

NOTE: Preloaded differential bearings may change the backlash setting. Check and correct the backlash if necessary.

61. Remove the housing spreader and tighten the bolts to 55-70 lb-ft. (75-95 N•m).

62. Apply silicone sealant to the cover sealing surface and secure the cover to the housing with the twelve bolts. Tighten the bolts

to 16 lb-ft. (22 N•m) (Figure 9-50).

Figure 9-50: Housing Cover Installation

63. Remove the housing from the holding fixture.

AXLE

HOUSING

SPREADER

AXLE HOLDING

FIXTURE ADAPTER

J–24385-01

COVER

HOUSING

_________________________________________

Axles, Suspension and Frame 9-31

64. Remove the four bolts and the two axle holding fixture adapters from the housing.

65. Using the press, install the output shaft bearings on the output shafts (Figure 9-51).

Figure 9-51: Bearing Installation

66. Using the axle shaft and the seal installer J–33142, install the output shaft assemblies into the axle assembly (Figure 9-52).

Figure 9-52: Axle Shaft And Seal Installer Usage

67. Using the axle shaft and the seal installer J–33142, install the output shaft seals in the axle assembly (Figure 9-53).

Figure 9-53: Output Shaft Seal Installation

68. Lubricate the sealing surface on the output flanges with lubricating oil (Figure 9-54).

OUTPUT SHAFT BEARING

OUTPUT SHAFT

AXLE ASSEMBLY

OUTPUT SHAFT

ASSEMBLY

AXLE SHAFT

AND SEAL

INSTALLER

J–33142

AXLE ASSEMBLY

OUTPUT

AXLE SHAFT AND

SEAL INSTALLER J–33142

SHAFT SEAL

9-32 Axles, Suspension and Frame

__________________________________________

Figure 9-54: Output Shaft Seal Installation

69. Install the two output flanges, two seals and the two locknuts on the output shafts. Finger tighten the locknuts.

70. Install the axle assembly.

71. Torque the two locknuts to 166-196 lb-ft. (224-265 N.m).

Axle Vent Line Replacement

NOTE: Axle vent line replacement procedures are basically the same. This procedure covers the rear axle vent line.

Removal

1.

Disconnect the vent line from the axle fitting and the tee fitting and remove the vent line (Figure 9-55).

2.

Remove the two line clips and the vent line from the brake line.

3.

Disconnect the vent line from the two tee fittings and remove the vent line.

Figure 9-55: Axle Vent Line Location

Installation

1.

Install the vent line and connect to the two tee fittings (Figure 9-55).

2.

Secure the vent line to the brake line with the two line clips.

3.

Connect the vent line to the axle fitting and tee fitting.

OUTPUT

OUTPUT

FLANGE

SHAFT

RUBBER

WASHER

LINE CLIPS

VENT LINE

TEE FITTING

BRAKE LINE

AXLE FITTING

VENT LINE

_________________________________________

Axles, Suspension and Frame 9-33

HALF SHAFT

Boot Replacement

Removal

NOTE: Inner and outer boots are replaced together. The inner CV joint is disassembled to gain access to the half shaft boots.

1.

Remove the wheel.

2.

Remove the access plug and washer from the geared hub (Figure 9-56).

3.

Remove the six bolts, lock washers and the half shaft from the rotor using tool J-45762.

4.

Remove the half shaft retaining bolt, lock washer and the half shaft from the geared hub.

Figure 9-56: Half shaft Retaining Bolt

5.

Loosen the two clamps securing the inner boot to the inner joint housing and the shaft (Figure 9-57).

6.

Slide the inner boot toward the outer joint along the shaft.

NOTE: Remove the excess grease from the bearing assembly.

7.

Clamp the shaft in a soft-jawed vise.

8.

Remove the retaining ring from the inner joint housing by forcing the clip up the chamfer on the inside of the housing.

9.

Remove the housing and the six ball bearings from the bearing assembly.

10. Move the outer race up on the shaft to allow for better access to the inner race (Figure 9-58).

11. Locate the snap ring adjacent to the inner race. Remove the snap ring from the groove and slide it up on the shaft (Figure

9-59).

12. Tap the inner race up on the shaft to expose the retaining clip.

13. Remove the retaining clip and the inner race from the shaft.

14. Remove the outer race, snap ring and the inner boot from the shaft (Figure 9-59).

15. Remove the two clamps and the outer boot from the shaft.

Cleaning and Inspection

NOTE: Clean all the components, examine for wear or damage and replace half shaft if necessary.

1.

Clean all the metallic parts with solvent.

2.

Inspect the halfshaft. assembly for damage or wear and replace if damaged or worn.

ROTOR

HALFSHAFT

GEARED

HALFSHAFT

ACCESS

PLUG

HUB

RETAINING

BOLT