Hummer H3. Manual — part 234

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.

2006 Hummer H3

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

Fig. 554: View Of Fixture Plate, Drill Bushing & Tool Marking
Courtesy of GENERAL MOTORS CORP.

20. Rotate the driver installation tool until the mark (3) on the driver installation tool aligns

with the top of the drill bushing (2).

21. Inspect the insert for proper installation into the tapped hole.

2006 Hummer H3

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

Fig. 555: View Fixture Plate & Bolts - Crankshaft Main Bolt Hole Thread Repair
Courtesy of GENERAL MOTORS CORP.

22. Remove the fixture plate bolts (1).

23. Remove the fixture plate (3) and bushing (2).

SERVICE PRIOR TO ASSEMBLY

Dirt will cause premature wear of the rebuilt engine. Clean all of the components. Use the proper
tools in order to measure components when inspecting for excessive wear. Repair or replace the
components that are not within the manufacturers specification. When components are reinstalled
into an engine, return the components to their original location, position, and direction. During
assembly, lubricate all of the moving parts with clean engine oil or engine assembly lubricant
(unless otherwise specified). This will provide initial lubrication when the engine is first started.

BALANCE SHAFT BEARING INSTALLATION

Tools Required

J 44225 Balance Shaft Bearing Remover/Installer

2006 Hummer H3

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

Fig. 556: View Of Balance Shaft Journals
Courtesy of GENERAL MOTORS CORP.

Position the cylinder block so the cylinder head deck face is down and identify the following:

The left balance shaft bearings are in the shorter length balance shaft journal (3) and (4).

The right balance shaft - grooved bearings are in the longer length balance shaft journal (1)
and (2).

2006 Hummer H3

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