Hummer H3. Manual — part 214

When installed to the proper depth, the flange (1) of the insert will be seated against the
counterbore of the drilled/tapped hole and just below the surface (2) of the base material.

Fig. 477: Drilling Out Threads Of Damaged Hole
Courtesy of GENERAL MOTORS CORP.

2006 Hummer H3

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

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. 478: 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.

2006 Hummer H3

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

2. Using compressed air, clean out any chips.

Fig. 479: View Of Counterbore Drill
Courtesy of GENERAL MOTORS CORP.

2006 Hummer H3

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

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

Fig. 480: 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.

2006 Hummer H3

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