Hummer H2. Manual - part 864

Fig. 54: Installing J 8614-01 
Courtesy of GENERAL MOTORS CORP. 

8. Install the J 8614-01 as shown.  

9. Remove the pinion nut while holding the J 8614-01 .  

10. Remove the washer. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

  

Fig. 55: J 8614-01, J 8614-2 & J 8614-3 
Courtesy of GENERAL MOTORS CORP. 

11. Install the J 8614-2 (2) and the J 8614-3 (3) into the J 8614-01 (1) as shown.  

12. Remove the pinion yoke by turning the J 8614-3 (3) clockwise while holding the J 8614-01 (1). 

Use a container in order to retrieve the lubricant. 

13. Remove the pinion oil seal. Use a suitable seal removal tool. Do not damage the housing.  

Installation Procedure 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

  

Fig. 56: Installing New Pinion Oil Seal Using J 22388 
Courtesy of GENERAL MOTORS CORP. 

1. Install a new pinion oil seal using the J 22388 or the J 44414 . See Special Tools and Equipment  

2. Apply sealant, GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the splines of the pinion 

yoke.  

3. Install the pinion yoke. 

Align the marks made during removal. 

4. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few pinion shaft 

threads show through the yoke.  

5. Install the washer and a new pinion nut. 

NOTE:

Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion 
components may be damaged if the pinion flange/yoke is hammered onto 
the pinion shaft.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2

  

Fig. 57: Installing J 8614-01 
Courtesy of GENERAL MOTORS CORP. 

6. Install the J 8614-01 onto the pinion yoke as shown. 

7. Tighten the pinion nut while holding the J 8614-01 . 

Tighten: Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the 
nut to seat the bearings. 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

IMPORTANT: If the rotating torque is exceeded, the pinion will have to be removed and 

a new collapsible spacer installed.

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Rear Drive Axle - Hummer H2