Hummer H2. Manual — part 1705

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

Fig. 26: 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.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

8. Inspect the A/C belt for proper installation and alignment.

9. Install the engine protection shield. Refer to Engine Protection Shield Replacement .

Fig. 27: Accessory Drive Belt
Courtesy of GENERAL MOTORS CORP.

10. Install the engine shield bolts.

Tighten: Tighten the engine shield bolts to 20 N.m (15 lb ft).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

11. Lower the vehicle.

12. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory .

DRIVE BELT IDLER PULLEY REPLACEMENT

Removal Procedure

Fig. 28: Drive Belt Idler Pulley (4.8L, 5.3L & 6.0L)
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

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 29: Drive Belt Idler Pulley (4.8L, 5.3L & 6.0L)
Courtesy of GENERAL MOTORS CORP.

1. Install the drive belt idler pulley and bolt to the generator bracket.

Snug the bolt finger tight.

2. Install the drive belt. Refer to Drive Belt Replacement - Accessory .

3. Tighten the drive belt idler pulley bolt.

Tighten: Tighten the drive belt idler pulley bolt to 50 N.m (37 lb ft).

DRIVE BELT TENSIONER REPLACEMENT - ACCESSORY

Removal Procedure

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2