Hummer H3. Manual — part 215

Fig. 481: Tapping Threads Of Drilled Hole
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

During the tapping process, it is necessary to repeatedly

2006 Hummer H3

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

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

M6 inserts require a minimum tap depth of 15 mm (0.59 in).

M8 inserts require a minimum tap depth of 20 mm (0.79 in).

M10 inserts require a minimum tap depth of 23.5 mm (0.93 in).

Fig. 482: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.

remove the tap and clean chips from the hole and the
flutes of the tap.

Ensure the tap has created full threads at least to the
depth equal to the insert length.

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

6. Using compressed air, clean out any chips.

Fig. 483: Spraying Cleaner Into Tapped Hole
Courtesy of GENERAL MOTORS CORP.

7. 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. 484: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.

8. 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