Hummer H2. Manual - part 896

Fig. 23: Differential Pinion Gears & Thrust Washers 
Courtesy of GENERAL MOTORS CORP. 

4. Install the differential pinion gears and the thrust washers by doing the following: 

1. Position both pinion gears and each thrust washer into each side of the differential window. 

Place the pinion gears 180 degrees across from each other. 

2. Rotate the differential side gears until both pinion gears are directly opposite the opening in the 

differential case. 

Line up the pinion shaft opening in each of the pinion gears with the pinion shaft opening in the 
differential case. 

 

2004 Hummer H2 

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

  

Fig. 24: Pinion Gear Shaft 
Courtesy of GENERAL MOTORS CORP. 

5. Install the pinion shaft.  

6. If the pinion shaft cannot be installed, remove the pinion gears and thrust washers, the locking differential 

side gear and differential thrust washer.  

7. Install a smaller differential side thrust washer and re-install the locking differential side gear, the pinion 

gears and thrust washers and the pinion shaft. 

 

2004 Hummer H2 

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

  

Fig. 25: Pinion Shaft Lock Bolt 
Courtesy of GENERAL MOTORS CORP. 

8. Install the pinion shaft lock bolt. 

Do not torque the pinion shaft lock bolt at this time.

 

2004 Hummer H2 

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

  

Fig. 26: Measuring Backlash Of Pinion Gear Closest To Pinion Shaft Lock Bolt & Locking 
Differential Side Gear 
Courtesy of GENERAL MOTORS CORP. 

9. Measure the backlash of the pinion gear closest to the pinion shaft lock bolt and the locking differential 

side gear by doing the following: 

1. Rotate the pinion gear so that one of the teeth is perpendicular to the ring gear flange.  

2. Install a brass drift between the locking differential side gear and the pinion shaft in order to 

prevent the side gear from moving.  

3. Install the J 7872 (1) to the ring gear flange. See Special Tools and Equipment .  

4. Loosely clamp the J 7872-2 (2) and the J 8001-3 (3) onto the stem on the J 7872 (1). See Special 

Tools and Equipment .  

5. Install the J 7872-3 (4) to the J 8001-3 (3).  

6. Place the contact pad of the J 7872-3 (4) onto one of the teeth of the pinion gear closest to the 

 

2004 Hummer H2 

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