Could someone help me? I have a 9n with a du all loader. I am switching over to a 12 volt system beings my 6 volt starter is shot. Purchased a alternator kit and the alternator was to big. Got that fixed with a mini alternator. The belt is to long have to remove belt and go with a shorter 5/8 inch one. I have a pump on the front of the crankshaft. Cant remember how I put the crankshaft pulley on can i remove the 4 bolts on the crankshaft pulley and remove it or do I have to pull the whole front end to get the belt on the crankshaft pulley?