Technical & Reference Section > Tech and Restoration

Chainring removal from 1 Piece Crank?? (with solution)

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James Nada:
I have the exact same problem with a 1PC and Chainring.

I have tried the hammed and chisel method and it won't budge

Spen69:
Yes it's a normal thread on this side of the crank, not the opposite thread like the other side of the crank.

Stand the chainring vertically on a hard surface (on a pile of rags if you need to keep the chainring) and hit the side that needs to go downwards towards the ground. You need to shock it off to undo it if it's old as it's designed to tighten up when pedalling.

If it won't move, try release oil like plusgas or something, or petrol to remove the grease then deisel to creep into the gaps, then hit it again.

Finally, use a chisel and a 3-1/2 lb club hammer and it will shift eventually.

MaD-RoK:
Bang on! Bang......bang bang bang  :daumenhoch:

Taipan:
Pipe grips :daumenhoch: and a bit of muscle you weekling!  ;) :daumenhoch:

punkdSICO:
Hi - I just popped to my local bike store and got a £6:50 tool that did the trick with no effort.  I put the link at the top of the thread.

Ta for peoples advice, as always..

Paul

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