Discussion in 'Bicycle Mechanics and Repairs' started by 3tyretrackterry, 17 Apr 2010.
Er..to do what?
sorry to undo the BB ive got the crank extractor but do i need a special tool to undo the notched ring
Ah yes, ideally you need a c-spanner, either adjustable or a fixed one of the correct size. Now I shouldn't really tell you this as more lock rings have been damaged by using a hammer and punch to undo them than there are stars in the sky, but you could try a hammer and punch.....gently!
However, slackening the lock ring is half the problem, then you have to undo the adjustable cup. I can't see from the picture which type you have, but it will need either a pin spanner for the holes, or a thin spanner across the flats if there are any.
on the other side is a metal ring which looks like the plastic version that are on shimano BB cassettes I also have the tool for removing this as well I am hoping that this is a cassette assembly rather than ballbearing and races
fair advice but can you tell me if this is a sealed bb or a ballbearing race and ballbearings
Personally, I have never come across a cartridge BB with a lock ring.......but I live and learn.
That looks like a octalink cartridge BB to me.
the right size allen key
and a spanner to undo the BB cups
Its an easy job but if you are rarely going to change the BB, the price of the tools make it expensive.
I think its one of these
Thanks for the info that looks like the one i have the tools other than the spanner any idea how much they are and where from
have just checked the crankset again and there is a number stamped into it fc 5500/5503 so looking at it it must be an octalink BB
thanks for the help
i must need an adaptor to extract the crankset am i correct
Separate names with a comma.