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9. In order to tap the new threads for the insert to the
proper depth, rotate the tap into the cylinder head
bolt hole until the mark (3) on the tap aligns with the
top of the drill bushing (2).
NOTE
Remove the fixture plate prior to installing
the insert with the installer tool.
10. Remove the fixture plate bolts (2).
11. Remove the fixture plate (3) and bushing (1).
NOTE
All chips must be removed from the tapped
hole prior to insert installation.
12. Using compressed air, clean out any chips.
13. Spray cleaner GM P/N 12346139, GM P/N
12377981 (Canadian P/N 10953463) or equivalent
into the tapped hole.
Engine Mechanical:
1D-237
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Table of Contents
Troubleshooting
