Chevrolet Silverado / GMC Sierra. Manual - part 350
Fig. 414: View Of Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
1. Clean the crankshaft balancer in solvent.
2. Clean the belt grooves of all dirt or debris with a wire brush.
3. Dry the crankshaft balancer with compressed air.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
4. Inspect the crankshaft balancer for the following conditions:
Worn, grooved, or damaged hub seal surface
A crankshaft balancer hub seal surface with excessive scoring, grooves, rust or other
damage must be replaced.
Minor imperfections on the hub seal surface may be removed with polishing compound
or fine grade emery cloth.
Dirty or damaged belt grooves
The balancer belt grooves should be free of any nicks, gouges, or other damage that
may not allow the belt to track properly.
Minor imperfections may be removed with a fine file.
Worn, chunking, or deteriorated rubber between the hub and pulley
AUTOMATIC TRANSMISSION FLEX PLATE CLEANING AND INSPECTION
IMPORTANT: In order for the belt to track properly, the belt grooves
should be free of all dirt or debris.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 415: View Of Ring Gear Teeth
Courtesy of GENERAL MOTORS CORP.
1. Clean the flex plate in solvent.
2. Dry the flex plate with compressed air.
3. Inspect the flex plate for the following conditions:
CAUTION: Refer to Safety Glasses and Compressed Air Caution .
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Damaged ring gear teeth (1)
Stress cracks around the flex plate-to-crankshaft bolt hole locations (2)
Welded areas (3) that retain the ring gear onto the flex plate for cracking
PISTON AND CONNECTING ROD DISASSEMBLE
IMPORTANT: Do not attempt to repair the welded areas that retain the
ring gear to the flex plate. Install a new flex plate.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2