Sorry dmtr, never pushed one apart, but I have done buckets of Enfield single cylinder cranks. The crank pin in these has a shoulder on it so that once pressed back together the wheels come up against the shoulder and this gives the correct spacing of the wheels and the correct clearance on the conrod. I have a jig that holds both wheels in place so it is true once pressed back together. After that I check them in the lathe for trueness. I don't know if the Victa pin is the same but if it has a shoulder each wheel has to be pushed outwards to split it. I think a 12 ton press should handle it
