Hummer H3. Manual — part 494

Fig. 15: Drive Belt Tensioner Bolt
Courtesy of GENERAL MOTORS CORP.

1. Open the hood.

2. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct

Replacement .

3. Install a breaker bar with hex-head socket to the drive belt tensioner bolt.

4. Rotate the drive belt tensioner clockwise in order to relieve tension on the belt.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

5. Remove the drive belt (1) from the pulleys and the drive belt tensioner.

6. Slowly release the tension on the drive belt tensioner.

7. Remove the breaker bar and socket and from the drive belt tensioner bolt.

8. Clean and inspect the belt surfaces of all the pulleys.

Installation Procedure

Fig. 16: Drive Belt Tensioner Bolt

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Courtesy of GENERAL MOTORS CORP.

1. Route the drive belt (1) around all the pulleys except the idler pulley.

2. Install the breaker bar with hex-head socket to the belt tensioner bolt.

3. Rotate the belt tensioner clockwise in order to relieve the tension on the tensioner.

4. Install the drive belt under the idler pulley.

5. Slowly release the tension on the belt tensioner.

6. Remove the breaker bar and socket from the belt tensioner bolt.

7. Inspect the drive belt for proper installation and alignment.

8. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct

Replacement .

9. Start the vehicle and inspect the drive belt for proper operation.

10. Close the hood.

AIR CONDITIONING COMPRESSOR BELT REPLACEMENT (LH8)

Removal Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 17: Removing Belt
Courtesy of GENERAL MOTORS CORP.

1. Remove the skid plate. Refer to Engine Shield Replacement .

2. Cut the belt (1) from air conditioning (A/C) and crankshaft pulleys.

Installation Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3