Thread: opinions please

If the belt disintegrated most likely it would have simply exited stage left and would not have had anything in it to catch a fan blade to destroy anything.

More likely scenario, is it simply threw the belt which got hooked up between the sensor and the fan blade which destroyed both at the same time. If the pulley/belt is squealing, the cause could be worn belt, worn pulley, buggered tensioner, stuffed bearings, misalignment, stretched belt meaning low tension, or something more arcane. Either way, a dealer saying squirt it with CRC is a dealer who doesn't want to spend any money on fixing it properly and hoping you'll go away - duty of care issue as I think someone else suggested.