a friend has a 740 SE 2.3 he changed the water pump but when refitting the bottom pulley he for got to put the wood rough key back and on tick over it fell off [:@] dose any one know how much damage there could be ???
thank's pete

 

You are talking about the crank pulley correct?

Did the lower pulley fall all the way off?

Did he tighten the bolt?

Is there still a peice on there?

 

yes it is the crank pulley yes the pulley fall right off and on to the floor and the engine stop dead which is the bit i dont like the sound of i not sure if he tighten the bolts as i have not see it yet
Pete

 

You need to inspect it good. I have a feeling the timing belt jumped as well. There is a slot on the back of the crank pulley that locks onto the lower timing pulley. He might have sheered it off. So you might have to replace that as well.

If the belt broke no big deal install a new one and you will be good to go.