Engine Flywheel Cleaning and Inspection
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- 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 (1) in solvent.
- Dry the flywheel with compressed air.
Inspect the manual transmission flywheel for the following:
- Damaged ring gear teeth
- 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.
- A scored, grooved or damaged friction surface
- Rotate the clutch side half of the flywheel.
- There should be play of up to +/- 4 degrees of rotation before it engages the inner springs of the dual mass flywheel.
- A torque of 140 - 230 N. m (103 - 170 lb ft) should be obtained at 42 degrees of rotation.
- No scraping or grinding noises should be heard during rotation. Replace the flywheel if any conditions are found.
Inspect the automatic transmission flywheel for the following:
- Damaged ring gear teeth
- Stress cracks around the flywheel-to-crankshaft bolt hole locations
- Weight saving holes
WARNING:
Refer to Safety Glasses Warning .