Why is it necessary to crank the crankshaft with an automatic transmission?
Cranking the crankshaft may be necessary in the following situations:
* Installing or replacing a timing belt or chain
* Engine repair
* Changing the cylinder head gasket
* Filling oil into the automatic transmission torque converter
How to crank the crankshaft with an automatic transmission:
Caution: Make sure the vehicle is in park or neutral and the shift lever is tightened into place.
Tools:
* Socket or socket wrench
* Screwdriver (optional)
Steps:
1. Disconnect the negative terminal of the battery. This will prevent power from being supplied to the engine while the crankshaft is cranking.
2. Locate the crankshaft bolt or nut. On modern engines it is usually located at the front of the engine under the crankshaft pulley.
3. Use a wrench to remove the crankshaft bolt or nut. A screwdriver may be needed to keep the flywheel from turning.
4. Insert a suitable tool into the crankshaft bolt or nut hole. This could be a ratchet wrench, a wrench, or a special crankshaft wrench.
5. Slowly and carefully rotate the crankshaft clockwise. Be careful not to over-tighten the crankshaft.
6. Continue cranking the crankshaft until the desired position is achieved.
7. Tighten the crankshaft bolt or nut.
8. Connect the negative terminal of the battery.
Adviсe:
*If the crankshaft is difficult to turn, use a crowbar or piece of pipe as a lever to increase torque.
* If you still cannot turn the crankshaft, check to see if anything is hitting anything in the engine.
* Be careful not to over-torque the crankshaft. This may damage the engine.