Hummer H3. Manual — part 1510

Fig. 170: View Of 1st/2nd Shift Fork Inspection Areas
Courtesy of GENERAL MOTORS CORP.

9. Inspect the 1st/2nd shift fork for scoring, distortion or wear through the hardened surface.

10. Inspect for a bent shift fork.

11. Inspect for cracks in the shift fork.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

12. Inspect the shift rail holes for excessive wear.

13. Replace the shift fork if faulty.

Fig. 171: Checking Clearance Between Reverse Gear & Shift Fork
Courtesy of GENERAL MOTORS CORP.

14. Using a feeler gage, measure the clearance between the reverse gear and the shift fork.

Specification: Maximum Clearance: 1.0 mm (0.039 in)

15. If the clearance exceeds the maximum, replace the shift fork or the reverse gear.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 172: View Of 3rd/4th Shift Fork Inspection Areas
Courtesy of GENERAL MOTORS CORP.

16. Inspect the 3rd/4th shift fork for scoring, distortion or wear through the hardened surface.

17. Inspect for a bent shift fork.

18. Inspect for cracks in the shift fork.

19. Inspect the shift rail hole for excessive wear.

20. Replace the shift fork if faulty.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 173: Measuring Clearance Between 3rd/4th Synchronizer Sleeve & Shift Fork
Courtesy of GENERAL MOTORS CORP.

21. Using a feeler gage, measure the clearance between the 3rd/4th synchronizer sleeve and the

shift fork.

Specification: Maximum Clearance: 1.0 mm (0.039 in)

22. If the clearance exceeds the maximum, replace the shift fork or the sleeve.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3