Hummer H2. Manual - part 895

Fig. 20: Differential Side Gears & Thrust Washers 
Courtesy of GENERAL MOTORS CORP. 

17. Remove the differential side gear and the side gear thrust washer. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Drive Axle - Locking/Limited Slip - Hummer H2

  

Fig. 21: Locking Differential Side Gear & Thrust Washer 
Courtesy of GENERAL MOTORS CORP. 

18. Remove the locking differential side gear and thrust washer. 

Mark the differential side gears and the thrust washers left and right. 

LOCKING DIFFERENTIAL CLEANING AND INSPECTION 

1. Clean all of the parts using an approved solvent.  

2. Visually inspect all the parts for excessive wear or breakage. Replace the parts if necessary.  

3. Check the pinion gear and the side gear teeth for any the following conditions: 

z

Wear  

z

Cracks  

z

Scoring  

z

Spalling  

4. Check the thrust washer for wear.  

5. Check the fit of the side gears on the axle shafts.  

6. Check the differential case for cracks and scoring. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Drive Axle - Locking/Limited Slip - Hummer H2

  

7. Check the thrust sleeve for excessive wear.  

8. Check the side gear bore for scoring. if scoring is present, replace the entire differential.  

9. Replace the differential if you find any damage to the case.  

LOCKING DIFFERENTIAL ADJUSTMENT 

Tools Required 

J 7872 Magnetic Base Dial Indicator. See Special Tools and Equipment . 

Locking Differential Side Gear Backlash Adjustment 

1. Lubricate the pinion gears, the side gears, the thrust washers and locking components using axle 

lubricant. Use the proper fluid. Refer to Fluid and Lubricant Recommendations in Maintenance and 
Lubrication. 

IMPORTANT: Do not replace the thrust sleeve unless this is necessary.

IMPORTANT: If it is necessary to replace the left side gear, the right side gear, or the thrust 

washers, the entire differential must be adjusted. The differential is adjusted 
using selective thickness thrust washers between the side gears and the case 
and adjusting the pinion gear to side gear backlash.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Drive Axle - Locking/Limited Slip - Hummer H2

  

Fig. 22: Locking Differential Side Gear & Thrust Washer 
Courtesy of GENERAL MOTORS CORP. 

2. Install the differential side gear thrust washer to the locking differential side gear. 

If the original differential side gear thrust washer is not available, install a 25.40 mm (1.000 in) thrust 
washer. 

3. Install the locking differential side gear and thrust washer into the ring gear side of the differential case. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Drive Axle - Locking/Limited Slip - Hummer H2