I have a 1948 8N with a front mounted hydraulic pump. I want to replace a badly worn fan belt and this is where the fun begins. I've researched the archives and found a reference to a splined shaft but I can't find it again. But anyway there's a round disc with four pins that go into the crankshaft pulley. I can't see any signs that it is splined into the disc but it has to be attached somehow. I don't want to do too much hammering until I know if the hopefully splined connection is what I have. If it is a welded connection I will need to remove the front axle and most of the front end loader and I can't believe someone would install such a setup. Anyone run into something like this?