Hummer H3. Manual — part 1481

Fig. 64: Measuring Axial Clearance On 5th Gear & Thrust Washer
Courtesy of GENERAL MOTORS CORP.

28. Using a feeler gage between the 5th countershaft gear and the thrust washer, measure the

axial clearance.

Specification:

Standard Clearance: 0.10-0.35 mm (0.0039-0.0138 in)

IMPORTANT: Before removal of the 5th synchronizer gear, measure the

axial play of the speed gear. Incorrect axial play of the gear
may cause shifting concerns or transmission noise.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Maximum Clearance: 0.40 mm (0.0157 in)

29. If the clearance exceeds the maximum, refer to Gears and Shafts Cleaning and

Inspection.

Fig. 65: Removing/Installing 5th Synchronizer Gear Retaining Ring
Courtesy of GENERAL MOTORS CORP.

30. Mount the intermediate case assembly in a vise on the 2 previously installed bolts.

31. Using 2 screwdrivers and a hammer, remove the 5th synchronizer gear retaining ring.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 66: Removing 5th Synchronizer Gear Using J 8433
Courtesy of GENERAL MOTORS CORP.

32. Using J 8433 with 2 bolts in the threaded holes of the 5th synchronizer gear, remove the

gear.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 67: View Of 5th/Reverse Gear Synchronizer
Courtesy of GENERAL MOTORS CORP.

33. Remove the 5th/reverse gear synchronizer.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3