Hummer H2. Manual - part 937

Fig. 116: Applying GM P/N 12346004 Sealant To Splines Of Pinion Yoke 
Courtesy of GENERAL MOTORS CORP. 

8. Install the pinion gear, with the inner pinion bearing and the new collapsible spacer, into the left 

differential carrier case half.  

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

yoke. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2

  

Fig. 117: Installing Pinion Yoke 
Courtesy of GENERAL MOTORS CORP. 

10. Install the pinion yoke. 

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 Front Drive Axle - Hummer H2

  

11. 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. 

Fig. 118: Installing Washer 
Courtesy of GENERAL MOTORS CORP. 

12. Install the washer. 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2

  

Fig. 119: Installing New Pinion Nut 
Courtesy of GENERAL MOTORS CORP. 

13. Install the new pinion nut.  

14. If the new pinion nut cannot be installed, perform the following steps in order to seat the pinion yoke onto 

the pinion so that the washer and the new pinion nut can be installed: 

1. Remove the pinion nut washer.  

2. Install the old pinion nut.  

3. Tighten the nut until a few of the shaft threads show through the nut so that the washer and the new 

 

2004 Hummer H2 

2004 DRIVELINE/AXLE Front Drive Axle - Hummer H2