Hummer H3. Manual — part 1491

Fig. 104: Removing The 3rd/4th Gear Synchronizer Hub Using J 22912-01 & J 45869
Courtesy of GENERAL MOTORS CORP.

22. Install the J 22912-B (2) with the J 45869 (1) under the 3rd gear. See Special Tools.

23. Using a hydraulic press, remove the 3rd/4th gear synchronizer hub.

NOTE:

Protect the speed gear teeth when removing the synchronizer
hubs to prevent damage to the gear.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 105: Identifying Output Shaft Components
Courtesy of GENERAL MOTORS CORP.

24. Remove the following components from the front of the output shaft:

The 3rd/4th gear synchronizer hub assembly (235)

The 3rd gear (130)

The 3rd gear bearing (133)

INPUT SHAFT DISASSEMBLE

Tools Required

J 22912-B Split-Plate Bearing Puller

Disassembly Procedure

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 106: View Of 4th Gear Blocking Ring
Courtesy of GENERAL MOTORS CORP.

1. Remove the 4th gear blocking ring from the input shaft.

Fig. 107: Locating Output Front Support Bearing
Courtesy of GENERAL MOTORS CORP.

2. Remove the output shaft front support bearing from the input shaft.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3

Fig. 108: Identifying Input Shaft Bearing Retaining Ring
Courtesy of GENERAL MOTORS CORP.

3. Inspect the input shaft bearing for being faulty. Refer to Bearings and Spacers Cleaning

and Inspection.

4. If the bearing is faulty, remove the input shaft bearing retaining ring.

2007 Hummer H3

2007 TRANSMISSION Manual Transmission - Aisin AR5 - H3