Hummer H3. Manual — part 394

Fig. 416: View Of Crankshaft Balancer Sealing Area & Belt Ribs
Courtesy of GENERAL MOTORS CORP.

1. Inspect the crankshaft balancer sealing area for grooves, nicks or burs (1).

2. Inspect the crankshaft balancer belt ribs for dents or damage (2).

3. Replace the crankshaft balancer if damage is present.

ENGINE FLYWHEEL CLEANING AND INSPECTION (AUTOMATIC TRANSMISSION)

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

Fig. 417: Inspecting Engine Flywheel For Damage - Automatic Transmission
Courtesy of GENERAL MOTORS CORP.

1. Inspect the engine flywheel for cracks (1).

2. Inspect the engine flywheel teeth for damage (2).

3. Replace the engine flywheel if damage is present.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

ENGINE FLYWHEEL CLEANING AND INSPECTION (MANUAL TRANSMISSION)

Fig. 418: Inspecting Engine Flywheel For Damage - Manual Transmission
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: In order to maintain the proper component balance, contact

surface taper and heat transfer, manual transmission
flywheels are NOT to be machined.

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3

1. Inspect the engine flywheel for damaged teeth (1).

2. Inspect the engine flywheel for cracks, hot spots or any surface damage (2).

3. Replace the engine flywheel if damage is present.

PISTON AND CONNECTING ROD DISASSEMBLE

Tools Required

EN-46745 Piston Pin Retainer Remover and Installer. See Special Tools.

Disassembly Procedure

2007 Hummer H3

2007 ENGINE Engine Mechanical - 3.7L - H3