Engine Flywheel Replacement

Engine Flywheel Replacement

Special Tools
* J 44643 Flywheel Holding Tool
* J 45059 Angle Meter

Removal Procedure




1. Remove the transmission. Refer to Transmission Replacement (Service and Repair) for the 4L60-E /4L65-E/4L70-E transmission, Transmission Replacement (Service and Repair) for the 4L50/4L80/4L90 transmission, or Transmission Replacement (Service and Repair) for the Allison transmission.
2. Install J 44643 in order to hold the flywheel.





Warning

When removing, handling or installing this component wear protective gloves. The sharp edges on the component may be very sharp and may cause injury.

3. Remove and discard the flywheel bolts.
4. Remove the flywheel washer and flywheel.

Installation Procedure

Warning

When removing, handling or installing this component wear protective gloves. The sharp edges on the component may be very sharp and may cause injury.





Note: When installing the flywheel, ensure that the tapered side of the teeth are facing the starter.

1. Install the flywheel.
2. Install the flywheel washer with the beveled side facing the engine.
Caution: Refer to Fastener Caution (Fastener Caution).

Caution: This component uses bolts with a preapplied molybdenum disulfide coating for thread lubrication. Do not remove the coating or use any additional lubricant. Improperly lubricated threads will adversely affect the bolt torque and clamp load. Improper bolt torque and clamp load can lead to engine damage.

3. Install NEW flywheel bolts.




4. Tighten the flywheel bolts in the proper sequence.

1. Tighten the bolts a first pass to 79 Nm (58 lb ft).
2. Tighten the bolts a second pass to 60 degrees using J 45059 .
3. Tighten the bolts a final pass an additional 60 degrees using J 45059 .




5. Remove J 44643 from the flywheel.
6. Install the transmission. Refer to Transmission Replacement (Service and Repair) for the 4L60-E/4L65-E/4L70-E transmission, Transmission Replacement (Service and Repair) for the 4L50/4L80/4L90 transmission, or Transmission Replacement (Service and Repair) for the Allison transmission.