Hummer H3. Manual — part 438

Fig. 576: View of Bushing Type Insert
Courtesy of GENERAL MOTORS CORP.

14. Install the insert (2) onto the driver installation tool (1).

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 577: Applying Threadlock To Insert
Courtesy of GENERAL MOTORS CORP.

15. Apply threadlock sealant GM P/N 12345493 (Canadian P/N 10953488), J 42385-109,

LOCTITE 277® or equivalent (1) to the insert OD threads (2).

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 578: Tapping Threads Using Tapping Wrench - Crankshaft Main Bolt Hole
Thread Repair
Courtesy of GENERAL MOTORS CORP.

16. Install the insert and installation driver into the tapped hole.

17. Start the insert into the threaded hole.

18. Install the insert until the flange of the insert contacts the counterbored surface.

IMPORTANT: If the insert will not thread down until the flange contacts the

counterbored surface remove the insert immediately with a
screw extracting tool and inspect the tapped hole for any
remaining chips and/or improper tapping.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

19. Continue to rotate the driver installation tool through the insert.

IMPORTANT: The driver installation tool will tighten up before screwing

completely through the insert. This is acceptable. The
threads at the bottom of the insert are being formed and the
insert is mechanically locking the insert into the base
material threads.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3