80s era bike. First picture is the drive side lockring that's like an oval. Second picture is non-drive side lockring with three notches.
Almost looks like a crescent will fit on the drive side.
Do I need to fully remove the BB to service the bearings? I was thinking I could just remove the drive side lockring and leave the bb in and replace bearings and regrease without having to pull the whole thing. But now I see the lockring with notches is on the non-drive side like you are meant to remove from that side.
by LonesomeOctoberGhost
4 Comments
Go in from non drive side. Remove the lockring with a crescent spanner and then the cup with a pin spanner no need to remove the drive side unless you want to. Vast majority of the time all these cup & cone BB’s need is a clean & regrease but even if the bearings are shot new ones are really cheap.
Hiya. I think you may be able to do a more thorough service if you take everything out. There could be frame corrosion in there. If the bearings aren’t sealed, you’ll need to replace both of those.
You can use a crescent wrench on the side with the two flat parts
The other ends looks like 3-5 pins? Maybe an hcw-5?
You can always consult this chart: https://www.parktool.com/en-us/blog/repair-help/bottom-bracket-tool-selection-threaded-and-thread-together
Would recommend pulling it all completely out to service the bearings. https://www.youtube.com/watch?v=qGuIiPwKXck