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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1566 (Engine Mechanical (Repair Instructions 2 Of 3) - 5.7L) >> Off-Vehicle Repair Instructions - Part 2 >> Engine Flywheel Cleaning and Inspection

Engine Flywheel Cleaning and Inspection

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Flywheel Weights (Manual Transmission)
    GM64126Courtesy 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.
  1. Clean the flywheel in solvent.
  2. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  3. Dry the flywheel with compressed air.
  4. Inspect the manual transmission flywheel for loose or improperly installed balance weights.

    A properly installed balance weight should be installed until flush or below flush with the face of the flywheel.

  5. Fig 2: Flywheel Inspection Areas (Manual Transmission)
    GM188086Courtesy of GENERAL MOTORS CORP.
  6. Inspect the manual transmission flywheel for the following:
    • 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.

  7. Fig 3: Automatic Transmission Flywheel
    GM64123Courtesy of GENERAL MOTORS CORP.
  8. Inspect the automatic transmission flywheel for the following:
    • Damaged ring gear teeth
    • Stress cracks around the flywheel-to-crankshaft bolt hole locations
    • Worn prop shaft drive hub splines
    • Loose prop shaft drive hub
    • IMPORTANT: Do not attempt to repair the welded areas that retain the ring gear to the flywheel plate. Install a new flywheel.
    • Welded areas that retain the ring gear onto the flywheel for cracking