replacing rear seal on b-2100

[kev@b-2100]

hi guys I have just bought a b-2100 ,after using it a few times i noticed a rear axle seal was leaking, so i picked one up at the kabota dealer, went home took the wheel off ,took small and large bolts off ,know comes the problem i can,t get stub off . i tried penetrating fluid and a little heat but still cant get it off . I hope somebody can tell me an easy way .

thanks guys kev@b-2100