Hummer H3. Manual — part 435

Fig. 565: View Of Crankshaft Main Bearing Bolt Hole Required Tools
Courtesy of GENERAL MOTORS CORP.

The crankshaft main bearing bolt hole required tools consist of the following:

IMPORTANT:

In order to repair some crankshaft main bolt holes it will be
necessary to mount the fixture plate upside down.

Do NOT remove the fixture plate prior to installing the insert
with the installation driver. The fixture plate remains in
position throughout the thread repair process.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Drill (1) J 42385-417

Tap (2) J 42385-418

Installation driver (3) J 42385-419

Fixture plate (4) J 42385-401

Bushing (5) J 42385-307

Alignment pin (6) J 42385-308

Bolts (7) J 42385-510

When installed to the proper depth, the flange of the insert will be seated against the counterbore
of the drilled/tapped hole.

CAUTION: Refer to SAFETY GLASSES CAUTION .

IMPORTANT:

Ensure the fixture plate is installed during the machining and
installation processes of the insert.

The use of a cutting type fluid GM P/N United States 1052864,
GM P/N Canada 992881, WD 40® or equivalent is
recommended when performing the drilling, counterboring
and tapping procedures.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 566: View Fixture Plate & Bolts - Crankshaft Main Bolt Hole Thread Repair
Courtesy of GENERAL MOTORS CORP.

1. Position the fixture plate (3) with the bushing (2), installed over the crankshaft main cap

bolt hole to be repaired.

2. Loosely install the fixture plate bolts (1) into the remaining crankshaft main cap bolt holes.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 567: View Of Alignment Pin & Fixture Retaining Bolts - Crankshaft Main Bolt
Hole Thread Repair
Courtesy of GENERAL MOTORS CORP.

3. Position the alignment pin (1) through the bushing and into the crankshaft main cap bolt

hole.

4. With the alignment pin in the desired crankshaft main cap bolt hole, tighten the fixture

retaining bolts (2).

5. Remove the alignment pin (1) from the crankshaft main cap bolt hole.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3