Flywheel: Service and Repair

Engine Flywheel Replacement

Removal Procedure





1. If equipped with a automatic transmission, remove the transmission. Refer to Transmission Replacement for the 4L80-E transmission, or Transmission Replacement (With 6.6L Engine) Transmission Replacement (With 8.1L (L18) Engine) for the Allison transmission.
2. Remove the engine flywheel bolts.
3. Remove the engine flywheel.





4. If equipped with a manual transmission, remove the clutch assembly. Refer to Clutch Assembly Replacement.
5. Remove the engine flywheel bolts.
6. Remove the engine flywheel.
7. Clean and inspect the engine flywheel. Refer to Engine Flywheel Cleaning and Inspection (Automatic Transmission) Engine Flywheel Cleaning and Inspection (Manual Transmission).

Installation Procedure

Important: Make sure the flywheel is installed correctly. "Engine Side" is stamped on the flywheel to aid with installation.





1. If equipped with a manual transmission, Install the engine flywheel.





2. If equipped with a automatic transmission, install the engine flywheel.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the engine flywheel bolts.
1. Tighten the bolts a first pass to 40 Nm (30 ft. lbs.).
2. Tighten the bolts a second pass to 80 Nm (59 ft. lbs.).
3. Tighten the bolts a final pass to 100 Nm (74 ft. lbs.).
4. If equipped with a manual transmission, install the clutch assembly. Refer to Clutch Assembly Replacement.
5. If equipped with a automatic transmission, install the transmission. Refer to Transmission Replacement for the 4L80-E transmission, or Transmission Replacement (With 6.6L Engine) Transmission Replacement (With 8.1L (L18) Engine) for the Allison transmission.