Hummer H3. Manual — part 957

Recommendations .

10. Install the pinion to the axle housing.

11. Install the outer pinion bearing.

Fig. 59: Installing Pinion Oil Seal
Courtesy of GENERAL MOTORS CORP.

12. Install a new pinion oil seal using the J 21128 . See Special Tools.

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

of the pinion yoke.

2007 Hummer H3

2007 Driveline/Axle Front Drive Axle - H3

Fig. 60: View Of Pinion Shaft & Pinion Yoke Alignment Marks
Courtesy of GENERAL MOTORS CORP.

14. Install the pinion yoke.

Align the marks made during removal.

15. 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.

16. Install the washer and a new pinion nut.

2007 Hummer H3

2007 Driveline/Axle Front Drive Axle - H3

Fig. 61: Holding Pinion Yoke With Special Tool
Courtesy of GENERAL MOTORS CORP.

17. Install the J 8614-01 onto the pinion yoke as shown. See Special Tools.

18. Tighten the pinion nut while holding the J 8614-01 . See Special Tools.

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.

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

removed and a new collapsible spacer installed.

2007 Hummer H3

2007 Driveline/Axle Front Drive Axle - H3

Fig. 62: Measuring Pinion Rotating Torque
Courtesy of GENERAL MOTORS CORP.

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

Specification: The rotating torque of the pinion should be 1.0-2.3 N.m (10-20 lb in) for
used bearings or 1.7-3.4 N.m (15-30 lb in) for new bearings.

20. 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 new bearings, continue to tighten the pinion nut.

Tighten: Tighten the pinion nut, in small increments, as needed, until the torque required in
order to rotate the pinion is 1.0-2.3 N.m (10-20 lb in) for used bearings or 1.7-3.4 N.m (15-
30 lb in) for new bearings.

21. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings

have seated.

Recheck the rotating torque and adjust if necessary.

22. Install the differential carrier assembly. Refer to Differential Carrier Assembly

2007 Hummer H3

2007 Driveline/Axle Front Drive Axle - H3