I'm servicing Elgin 761 automatic movement that has a mainspring barrel and a ratchet wheel as an assembly. Anyone familiar with this movement knows that the ratchet wheel is mounted underneath the barrel and the movement does not use a screw to hold them together. I tried to pull the ratchet wheel from the barrel's arbor but it doesn't come off. The Elgin service manual recommends to leave the barrel alone and do not disassemble it during service, but the ratchet wheel still has to come off. Please advice on how to proceed in this case? Is there a special tool needed to take apart the barrel and ratchet wheel?
Most visitors online was 1660 , on 12 Dec 2020