- Locks flywheel in place when removing harmonic balancer on 6.6L Duramax engines with Allison automatic transmissions
- Saves time by locking the flywheel at the transmission instead of having to remove the starter for water pump replacement
- On 2500 and 3500 pickups, remove metal spring-loaded inspection plate on the bottom of the transmission
- Tool should slide into opening toward engine with the top of the tool engaging the teeth of the flywheel
- On 4500 and 5500 trucks, remove the rubber inspection cap on the bottom of the transmission
- Insert the tool at the front of the opening to engage the flywheel and hand tighten bolt to hold tool in place
- Use 36mm 12-point socket with 3/4" square drive to remove harmonic balancer bolt and retorque on installation
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