Just replaced the lower cartridge bearing in the MTB, had a spare, and the existing one has been in years (over 10) - the bearing race has started to get a little pitted....so replaced it......
One slight issue with the locknut stripping (the bike originally had a very low stack headset) so not much steerer to grab. Found a spare locknut though.
No cleaning needed..both the MTB and Fixed were cleaned and oiled after my last commute before Xmas........
Although, not sure which bike it will be yet - signs of ice tomorrow.......... argh......
