Hummer H3. Manual — part 290

Courtesy of GENERAL MOTORS CORP.

1. Install the drive belt (1) over all the pulleys, except for the water pump pulley (2).

2. Install the 3/8 inch breaker bar into the drive belt tensioner (7).

3. Rotate the tensioner (7) clockwise.

4. Install the drive belt (1) over the top of the water pump pulley (2).

5. Slowly release the tension on the drive belt tensioner (7).

6. Inspect for proper installation of the drive belt (1) on the pulleys.

DRIVE BELT TENSIONER REPLACEMENT

Removal Procedure

IMPORTANT: Ensure the drive belt is properly aligned and seated into the

grooves of the drive pulleys.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 37: View Of Drive Belt Tensioner
Courtesy of GENERAL MOTORS CORP.

1. Remove the drive belt. Refer to Drive Belt Replacement (Without A/C) or Drive Belt

Replacement (With A/C).

2. Using a wrench, loosen and remove the drive belt tensioner bolt.

3. Remove the drive belt tensioner.

Installation Procedure

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 38: View Of Drive Belt Tensioner
Courtesy of GENERAL MOTORS CORP.

1. Position the drive belt tensioner. Ensure the alignment tab is in the proper location.

2. Install the drive belt tensioner bolt.

Tighten: Tighten the bolt to 50 N.m (37 lb ft).

3. Inspect the drive belt. Replace the drive belt if necessary.

NOTE:

Refer to Fastener Notice .

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

4. Install the drive belt Drive Belt Replacement (Without A/C) or Drive Belt

Replacement (With A/C).

DRIVE BELT IDLER PULLEY REPLACEMENT

Removal Procedure

Fig. 39: View Of Drive Belt Idler Pulley & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Remove the drive belt. Refer to Drive Belt Replacement (Without A/C) or Drive Belt

Replacement (With A/C).

2. Remove the left front wheel. Refer to Tire and Wheel Removal and Installation .

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3