17-09-2020, 01:42 PM
I'm setting up for this, now that I've decided the crank has to come out....
I'm going to gently warm the front of the crankcase in a water bath to 60 then push on to 80 deg C if I have to.
I'then supporting the front of the crank, and I'm going to gently drift it out - my question is about which bit I should have the drift on - the notch in the crank allows good access to the inner race, but I can also just see part of the outer race hiding behind the lip of the crankcase - should I be drifting both or just the inner one?
One further thought - it seems to me that I could make a bodged tool that jacks them out against the thread that retains the flywheel on the other end of the crank, rather than doing it against the housing as suggested in Doug Woodrow's excellent book - is there a good reason why it's not done this way?
Thanks
James
I'm going to gently warm the front of the crankcase in a water bath to 60 then push on to 80 deg C if I have to.
I'then supporting the front of the crank, and I'm going to gently drift it out - my question is about which bit I should have the drift on - the notch in the crank allows good access to the inner race, but I can also just see part of the outer race hiding behind the lip of the crankcase - should I be drifting both or just the inner one?
One further thought - it seems to me that I could make a bodged tool that jacks them out against the thread that retains the flywheel on the other end of the crank, rather than doing it against the housing as suggested in Doug Woodrow's excellent book - is there a good reason why it's not done this way?
Thanks
James