Hummer H3. Manual — part 427
Fig. 535: Drilling Out Threads Of Damaged Hole
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.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
1. Drill out the threads of the damaged hole.
Fig. 536: Cleaning Out Metal Chips
Courtesy of GENERAL MOTORS CORP.
2. Using compressed air, clean out any chips.
Drill the hole until the stop collar contacts the surface of
the base material.
IMPORTANT: All chips must be removed from the drilled hole prior to
tapping.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
Fig. 537: 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
3. Using a suitable tapping wrench, tap the threads of the drilled hole.
Fig. 538: View Of Proper Tapping Distance - Tapered Thread
Courtesy of GENERAL MOTORS CORP.
4. Tap the drilled hole until the threads at the top of the tap (2) are down to the surface of the
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.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
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