Hummer H3. Manual — part 232

8. Using a suitable tapping wrench, tap the threads of the drilled hole.

Fig. 546: View Of Fixture Plate, Drill Bushing & Tool Marking
Courtesy of GENERAL MOTORS CORP.

9. In order to tap the new threads for the insert to the proper depth, rotate the tap into the

crankshaft main cap bolt hole until the mark (3) on the tap aligns with the top of the drill
bushing (2).

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 547: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.

10. Using compressed air, clean out any chips.

IMPORTANT: All chips must be removed from the tapped hole prior to

insert installation.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 548: Spraying Cleaner Into Tapped Hole
Courtesy of GENERAL MOTORS CORP.

11. Spray cleaner GM P/N 12377981 (Canadian P/N 10953463) or equivalent into the tapped

hole.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

Fig. 549: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.

12. Using compressed air, clean out any chips.

IMPORTANT: All chips must be removed from the tapped hole prior to

insert installation.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3