I have an 7 year old mountain bike that I have used to commute for the past 5 years. I neglected the bike for the past few years and within the past year have become much more aware of bike maintenance.
About a month ago I replaced the cassette and chain. I would like to replace the the front crankset.
The current cranks are shimano.
My question is how do I remove them. I can get the cap off and then use my socket wrench to remove the nut. But after that I can't get the cranks off, is there a lock ring or something??