THis has been a great thread but I'm just not sure about this step. The Haynes manual doesn't talk about this. Is this a loose part that comes off when the pulley is pulled? Can anybody care to explain Thanks- There is a keyway and key (half-moon shaped piece of metal that fits in the keyway) on the crankshaft. Examine the key for burrs and dress it with a pattern file if there are any. (Clean and oil it afterwards.) Set the key in the keyway with the front slightly lower than the rear so the pulley won't push it out when installed.