Hummer H2. Manual — part 1848

3. Install the fixture plate (3), bolts (1), and bushing (2) onto the engine block deck.

Position the fixture plate and bushing over the hole that is to be repaired (4).

Fig. 559: Alignment Pin & Fixture Retaining Bolt
Courtesy of GENERAL MOTORS CORP.

4. Position the alignment pin (1) through the bushing and into the hole.

5. With the alignment pin in the desired hole, tighten the fixture retaining bolts (2).

6. Remove the alignment pin from the hole.

2004 Hummer H2

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

Fig. 560: Identifying Repair Kit Sleeve
Courtesy of GENERAL MOTORS CORP.

7. Install the sleeve (2) onto the drill (1), if required.

2004 Hummer H2

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

Fig. 561: Drilling Cylinder Head Bolt Hole
Courtesy of GENERAL MOTORS CORP.

8. Drill out the threads of the damaged hole.

Drill the hole until the stop collar of the drill bit or the sleeve contacts the bushing.

9. Using compressed air, clean out any chips.

IMPORTANT: During the reaming process, it is necessary to repeatedly remove the drill

and clean the chips from the hole.

2004 Hummer H2

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

Fig. 562: Tapping Cylinder Head Drilled Hole Using Tap Wrench
Courtesy of GENERAL MOTORS CORP.

10. Using a tap wrench, tap the threads of the drilled hole.

2004 Hummer H2

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