36/40 wrench to unscrew the cup on the crankset side. A hammer and a flathead screwdriver to unscrew the counter-nut on the opposite side and a 23/24/25/26mm wrench to unscrew the cup on the same side.
rtwebb on
Those are such a pain. Id replace it with a square taper sealed Shimano bb
TrueF0xtr0t on
It’s called a cup and cone square taper BB.
Nothing wrong with just maintaining it and using it (if it’s good shape) if it’s not I’d replace it with a sealed cartridge square taper BB and you can reuse the cranks, the length of the spindle (width of the BB) is usually stamped in the middle of the spindle, you’ll wanna order the same size.
3 Comments
36/40 wrench to unscrew the cup on the crankset side. A hammer and a flathead screwdriver to unscrew the counter-nut on the opposite side and a 23/24/25/26mm wrench to unscrew the cup on the same side.
Those are such a pain. Id replace it with a square taper sealed Shimano bb
It’s called a cup and cone square taper BB.
Nothing wrong with just maintaining it and using it (if it’s good shape) if it’s not I’d replace it with a sealed cartridge square taper BB and you can reuse the cranks, the length of the spindle (width of the BB) is usually stamped in the middle of the spindle, you’ll wanna order the same size.