Hummer H3. Manual — part 419

1. Drill out the threads of the damaged hole.

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

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

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

Fig. 503: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

During the drilling process, it is necessary to repeatedly
remove the drill and clean chips from the hole and the
flutes of the drill.

Do NOT drill any further than the original hole depth.

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

tapping.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

2. Using compressed air, clean out any chips.

Fig. 504: View Of Counterbore Drill
Courtesy of GENERAL MOTORS CORP.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

3. Counterbore the drilled hole to the full depth permitted by the tool (1).

Fig. 505: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.

4. Using compressed air, clean out any chips.

IMPORTANT: A properly counterbored hole will show a slight burnishing

on the surface of the base material for 360 degrees around
the drilled hole.

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

tapping.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 506: Tapping Threads Of Drilled Hole
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

During the tapping process, it is necessary to repeatedly

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3