Engine Flywheel Cleaning and Inspection 6.2L LS3

1. Clean the flex plate in solvent.
2. Dry the flex plate with compressed air.
3. Inspect the automatic transmission flex plate for the following conditions:

•	Loose or missing bolts/nuts (1, 2)

•	Damaged splines (3)

•	Damaged ring gear teeth (4)

•	Stress cracks around the flex plate-to-crankshaft bolt hole locations





Note: In order to maintain the proper component balance, contact surface taper, and heat transfer, manual transmission flywheels are NOT to be machined.

4. Inspect the manual transmission flywheel for the following conditions:

•	Pitted surface (1)

•	Grooved or scored surface (2)

•	Rusted surface (3)

•	Damaged ring gear teeth (4)

•	Loose or improperly positioned ring gear

The ring gear has an interference fit onto the flywheel and should be positioned completely against the flange of the flywheel.

•	Missing, bent or damaged pressure plate locating pins

The 2 locating pins are installed into the flywheel and spaced 170 degrees apart to ensure proper orientation of the clutch pressure plate to the engine flywheel during assembly.

Engine Flywheel Cleaning and Inspection 6.2L LS9

Note: In order to maintain the proper component balance, contact surface taper, and heat transfer, manual transmission flywheels are NOT to be machined.

1. Clean the flywheel in solvent.

Warning: Refer to Safety Glasses Warning in the Preface section.

2. Dry the flywheel with compressed air.
3. Inspect the flywheel for the following conditions:

•	Pitted surface (1)

•	Grooved or scored surface (2)

•	Rusted surface (3)

•	Damaged ring gear teeth (4)

•	Loose or improperly positioned ring gear

The ring gear has an interference fit onto the flywheel and should be positioned completely against the flange of the flywheel.

•	Missing, bent or damaged pressure plate locating pins (5)

The 6 locating pins are installed into the flywheel in order to ensure proper orientation of the clutch pressure plate to the flywheel during assembly.