Hummer H3. Manual — part 1511

Fig. 174: Inspection Areas On Reverse Shift Fork & Reverse Shift Lever
Courtesy of GENERAL MOTORS CORP.

23. Inspect the reverse shift fork and the reverse shift lever for wear or damage.

24. Replace the reverse shift fork or the reverse shift lever if found faulty.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 175: Checking Clearance Between Reverse Idler Gear & Reverse Shift Fork
Courtesy of GENERAL MOTORS CORP.

25. Using a feeler gage, measure the clearance between the reverse idler gear and the reverse

shift fork.

Specification:

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Standard Clearance: 0.05-0.35 mm (0.0020-0.0138 in)

Maximum clearance: 0.50 mm (0.0197 in)

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

Fig. 176: Locating Inspection Areas On 5th Gear Shift Fork
Courtesy of GENERAL MOTORS CORP.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

27. Inspect the 5th gear shift fork for worn pads.

28. Inspect for a bent shift fork.

29. Inspect for cracks in the shift fork.

30. Inspect the shift rail hole for excessive wear.

31. Inspect the shift fork gates for excessive wear.

32. Replace the shift fork if faulty.

Fig. 177: Measuring Clearance Between 5th Synchronizer Sleeve & Shift Fork
Courtesy of GENERAL MOTORS CORP.

33. Using a feeler gage, measure the clearance between the 5th synchronizer sleeve and the shift

fork.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3