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 (Removal and Replacement) for the 4L60-E /4L65-E/4L70-E transmission,Transmission Replacement (Removal and Replacement) for the 4L50/4L80/4L90 transmission, orTransmission Replacement (Removal and Replacement) for the Allison transmission.
2. InstallJ 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 usingJ 45059 .
3. Tighten the bolts a final pass an additional 60 degrees usingJ 45059 .






5. RemoveJ 44643 from the flywheel.
6. Install the transmission. Refer to Transmission Replacement (Removal and Replacement) for the 4L60-E/4L65-E/4L70-E transmission,Transmission Replacement (Removal and Replacement) for the 4L50/4L80/4L90 transmission, orTransmission Replacement (Removal and Replacement) for the Allison transmission.