Crank nose runout.

[93rev2sev]

In reference to another thread, ILL SHO U has a front accessory driveline problem. I'll relay to you what he told me in a PM because he wants a good answer. I thought about it for a moment and decided he should check for a bent crank.

I might be a little over cautious but heres our latest...

The lower idler pulley between the crankshaft and A/C.


Also, the crank pulley seperated, the outer part has shifted in on mine. Can the pulley "cut" into the engine? It has shifted inward about 1/2" to 3/4" and the belt is riding on the outer rim of the pulley. Is there anything I should check for as Im making the change?

Bad news about the belt riding like that. Hopefully it wasn't like that for long. I can't imagine the belt outlasting the pulley. They might have gone through several belts. I'm surprised the belt stayed in place long enough for that to even happen. But...whats done is done.

You will definately want to take off the timing belt and timing sprocket and have a nice long look at the crankshaft keyway and key. Hopefully the crank pulley thats on there now will be difficult to remove. This will indicate that it's still a tight fit. It might be good that the pulley separated...saving the crank.
Remove spark plugs...If you have a dial indicator, bolt it to the engine and turn the engine over with the crank bolt. Measure the crank runout. Place the dial indicator on the crank and see if it's wonkey. I don't have any numbers but I know how to ask...Look for a post on crank runout...

There...:type: