SOHC.co.uk Forums > CB500/550
Rotor stuck. Is there a trick?
McCabe-Thiele (Ted):
The impact strike is better than tightening up the puller too much and not just on motorcycle cranks.
On the old A Series BMC engines flywheels could be hard work even using fancy hydraulic pullers. The strike with a lump hammer frightened them into letting go. (Yes they had a Woodruff key)
alexdecker:
Problem is that I have dismantled the entire engine, so its just the crank I am operating with. So I don't have the weight of the engine or bike to stand against the torque.
Should I just torque it and smack it hard as hell with the hammer?
Sesman:
I simply undid the bolt, strategically placed a bit of 2x3 softwood inside the rotor and worked it around tapping firmly, but not violently….of it popped.
Johnny4428:
Brilliant! I learned a long time ago it’s sometimes better to walk away and take stock, regroup rather than going for the explosives!😂
Oddjob:
You know Bryan I had to go and check the cranks I am scrapping as I have a VIVID memory of pulling woodruff keys out of the slots and it's a recent one.
I'm wondering now what the hell I was working on.
Getting old is starting to suck a little ;D ;D ;D
This is the one I use. I think I paid about £10 for it in the 80s.
https://www.ebay.co.uk/itm/293326225468?hash=item444b9b003c:g:sVMAAOxyJs5RZT7f
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