Engine Flywheel Cleaning and Inspection (6.2L LS9)

Fig 1: Identifying Flywheel Inspection Areas

Courtesy of GENERAL MOTORS CORP.

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

Clean the flywheel in solvent.

WARNING: Refer to Safety Glasses Warning .

Dry the flywheel with compressed air.
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.