i not long ago replaced my gear for a new one. that pin was not going to move without assistance. we were showing 15 tonnes on the press guage & it was not budging. ended up drilling a small pilot hole & then enlarged it to almost the small end of the pin size. back on the press & it came off at 1.5 tonnes. this might be your best option too as you don't want to damage the shaft if you mishandle it too much.