I got a replacement water pump for my 1942 Allis Chalmers C. Now I find the fan hub on the replacement is about 1/8" or so too big (diameter) for the sheave flange to fit over it. The replacement is made in Turkey. The bolt holes and sizes match up to bolt on the fan assembly.
Anybody have any experience with this problem? Are there different sizes of fan hubs or is this just someone after market manufacturer not measuring well. I probably could grind enough off to make it fit...any reason not to do that?