Flywheel: Service and Repair
Removal Procedure- Tools Required
- J 8001 Dial Indicator Set
- J 26900-13 Magnetic Base
- J 36660 Torque Angle Meter
Caution: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Remove the transmission assembly.
3. If equipped with a manual transmission, remove the clutch and pressure plate.
4. Inspect the ring gear. Replace the flywheel (2) if the ring gear is damaged, cracked or worn.
5. Inspect the surface which is contacting the clutch disc on manual transmission equipped vehicles. Replace the flywheel if the surface is damaged or excessively worn.
6. Use a J 8001 with a J 26900-13 in order to measure the flywheel (2) for face runout. Replace the flywheel if the runout exceeds 0.1 mm (0.004 inch).
7. Mark the flywheel-to-engine position.
8. Remove the eight flywheel retaining bolts.
9. Remove the flywheel from the crankshaft.
10. Clean the grease and dirt from the flywheel (2) outer surfaces using a suitable solvent.
Installation Procedure
1. Install the flywheel to the crankshaft. Align the flywheel-to-engine marks.
NOTICE: Do not apply an excessive amount of sealant to the flywheel retaining bolt threads. Applying too much sealant will result in the sealant overflowing the bolt seat. This could cause the bolt to break loose during vehicle operation.
2. Apply GM P/N 12345493, or the equivalent, to the flywheel retaining bolt threads (1).
3. For vehicles equipped with an Automatic Transmission, install the flywheel retaining bolts (1-8) to the crankshaft.
Tighten the eight flywheel retaining bolts in sequence for Automatic Transmission to 83 Nm (61 ft. lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
4. For vehicles equipped with a Manual Transmission, install the flywheel retaining bolts to the crankshaft.
Tighten the eight flywheel retaining bolts in sequence for Manual Transmission to 49 Nm (36 ft. lbs.). After the proper torque has been reached, use a J 36660 and tighten the flywheel bolts an additional 90 degrees.
5. If equipped with a manual transmission, install the clutch and pressure plate.
6. Install the transmission assembly.
7. Connect the negative battery cable.
- Tighten the battery cable bolt to 15 Nm (11 ft. lbs.).