Hummer H3. Manual — part 1675

61. Using the J 2619-01 (1) and the J 45548 (2), remove the mainshaft rear support bushing

from the rear output shaft. See Special Tools.

Fig. 74: Removing Front Output Shaft Rear Bearing From Rear Case
Courtesy of GENERAL MOTORS CORP.

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

62. Using the J 29369-1 (1) and the J 23907 (2), remove the front output shaft rear bearing

from the rear case.

Fig. 75: Locating Shift Shaft Seal
Courtesy of GENERAL MOTORS CORP.

63. Remove the shift shaft seal by prying it out of the case.

CLEANING AND INSPECTION

Front Case Half

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

Fig. 76: Front Case Half
Courtesy of GENERAL MOTORS CORP.

1. Clean the front case half in cleaning solvent and air dry.

2. Remove the shavings from the case half bolt holes.

3. Remove the sealer from the case sealing surfaces.

4. Inspect the case for being broken or cracked.

5. Inspect the front output shaft front bearing bore (5) for the following conditions:

A spun bearing

Cracks

NOTE:

Refer to Machined Surface Damage Notice .

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

6. Inspect the input shaft bearing bore (4) for the following conditions:

A spun bearing

Cracks

7. Replace the front case half if any of the above conditions are found.

8. Inspect the sealing surfaces (1) for damage.

9. Repair small scratches or nicks with a soft stone.

10. Inspect the front case to transmission case mounting surface for damage.

11. Inspect the case threaded bolt holes (2) for damage.

12. Repair any damaged threads.

13. Inspect the transmission to transfer case studs for damage.

14. Replace any damaged studs.

15. Inspect the location pins (3) for being loose or missing.

16. Repair or replace any damaged location pins.

17. Inspect the front output shaft front bearing and the input shaft bearing for the following

conditions:

Roughness

Brinelling

Pitting

18. Replace the bearings if any of the above conditions are found. Refer to Transfer Case

Disassemble and Transfer Case Assemble.

Rear Case Half

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3