Chevrolet Silverado / GMC Sierra. Manual - part 242
Fig. 24: A/C Belt Tensioner
Courtesy of GENERAL MOTORS CORP.
4. Install a ratchet into the air conditioning (A/C) belt tensioner adapter opening.
5. Rotate the A/C belt tensioner clockwise in order to relieve tension on the belt.
6. Remove the A/C belt from the pulleys.
7. Slowly release the tension on the A/C belt tensioner.
8. Remove the ratchet from the A/C belt tensioner.
9. Clean and inspect the belt surfaces of all the pulleys.
Installation Procedure
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 25: A/C Belt Tensioner
Courtesy of GENERAL MOTORS CORP.
1. Install the A/C belt around the crankshaft balancer.
2. Install a ratchet into the A/C drive belt tensioner adapter opening.
3. Rotate the A/C belt tensioner clockwise in order to relieve tension on the tensioner.
4. Install the A/C belt over the idler pulley.
5. Install the A/C belt around the A/C compressor pulley.
6. Slowly release the tension on the A/C belt tensioner.
7. Remove the ratchet from the A/C belt tensioner.
8. Inspect the A/C belt for proper installation and alignment.
9. Install the engine protection shield. Refer to Engine Protection Shield Replacement .
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 26: Drive Belt Routing
Courtesy of GENERAL MOTORS CORP.
10. Install the engine shield bolts.
Tighten: Tighten the engine shield bolts to 20 N.m (15 lb ft).
11. Lower the vehicle.
NOTE:
Refer to Fastener Notice .
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
12. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory.
DRIVE BELT IDLER PULLEY REPLACEMENT
Removal Procedure
Fig. 27: View Of Drive Belt Idler Pulley
Courtesy of GENERAL MOTORS CORP.
1. Loosen the drive belt idler pulley bolt.
2. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory.
3. Remove the drive belt idler pulley and bolt.
Installation Procedure
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2