I just removed a cartridge BB. I started with the drive side, which took a lot of torque to unscrew. Once I finally removed the drive side cup (and banged my head against the frame), I thought I was going to spend a lot of time to remove the left one, too. However, it was too easy to unscrew it. My 5 year old daughter could have unscrewed it.
Is that normal?
I'm asking because I suspected the BB to be lose, that's why I decided to remove it. There was a sound whenever I pedalled uphill. Sheldon Brown helped me pinpoint the cause:
Taken from here: http://sheldonbrown.com/creaks.htmlBottom Bracket Cups/Retaining Rings Loose?
Turn the cranks so that the left crank is alongside the seat tube, wrap both hands around the crank and seat tube ans squeeze the crank hard toward the seat tube.
Then turn the cranks so that the right crank is alongside the seat tube and repeat this. Listen for a creak/click.
The bike is one year old with only about 1500 Km / 1000 miles, and there was no rust or anything.