Could it be possible that the clutch puller is cracking the crank when a hammer and or impact gun is slamming it against the crank?
A "New" clutch puller with No metal to metal contact with crank !!!
http://www.youtube.com/watch?v=Fp0aO...ature=youtu.be
A "New" clutch puller with No metal to metal contact with crank !!!
http://www.youtube.com/watch?v=Fp0aO...ature=youtu.be