Hummer H3. Manual — part 316

Fig. 128: View Of EN 46547 Flywheel Holding Tool
Courtesy of GENERAL MOTORS CORP.

4. Install the EN 46547 (1) into the flywheel teeth. See Special Tools.

IMPORTANT: The crankshaft balancer does not have a key-way; so the

crankshaft could turn when tightening, causing an improper
torque.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

5. Lower the vehicle.

6. Remove the fan. Refer to Fan Replacement .

7. Remove the fan shroud. Refer to Fan Shroud Replacement (LLR) .

8. Drain the engine cooling system. Refer to Cooling System Draining and Filling (Static

Fill) or Cooling System Draining and Filling (Vac-N-Fill) .

9. Remove the radiator. Refer to Radiator Replacement .

Fig. 129: View Of Crankshaft Balancer Bolt
Courtesy of GENERAL MOTORS CORP.

10. Remove and discard the crankshaft balancer bolt.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 130: View Of Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.

11. Install the J 41816-2 into the end of the crankshaft. See Special Tools.

12. Using a J 41816-2 , remove the crankshaft balancer. See Special Tools.

13. Remove the J 41816-2 . See Special Tools.

14. Remove the crankshaft balancer friction washer.

This will be located at the end of the crankshaft balancer or on the crankshaft.

15. Clean and inspect the crankshaft balancer. Refer to Crankshaft Balancer Cleaning and

Inspection.

IMPORTANT: Do not pull on outer edge of the crankshaft balancer.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Installation Procedure

1. Install the crankshaft balancer friction washer to the end of the crankshaft balancer.

Fig. 131: Installing Crankshaft Balancer Using The J 41478
Courtesy of GENERAL MOTORS CORP.

2. Install the crankshaft balancer using the J 41478 . See Special Tools.

3. Remove the J 41478 . See Special Tools.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3