Hummer H2. Manual - part 981

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

  

pinion nut can be installed.  

4. Remove the old pinion nut.  

5. Install the pinion nut washer.  

6. Install the new pinion nut.  

Fig. 120: Installing J 8614-01 Onto Pinion Yoke 
Courtesy of GENERAL MOTORS CORP. 

15. Install the J 8614-01 onto the pinion yoke as shown. See Special Tools and Equipment . 

16. Tighten the pinion nut while holding the J 8614-01 . See Special Tools and Equipment . 

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

17. Remove the J 8614-01 . See Special Tools and Equipment .  

18. Measure the rotating torque of the pinion using an inch-pound torque wrench. 

Specification: The rotating torque of the pinion should be 1.1-2.3 N.m (10-20 lb in) for used bearings, or 
1.7-3.4 N.m (15-30 lb in) for new bearings. 

19. If the rotating torque measurement is below 1.0 N.m (10 lb in) for used bearings, or 1.7 N.m (15 lb in) for 

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 Front Drive Axle - Hummer H2