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The way to sort it is to run a bottom bracket thread chasing tool through to remove the “nick”.
Any bike shop should have kit that can do this easily. If you’re simply refitting the old
BB and greasing the threads you should screw the r/h side in first then the left. If you do it the way you’re suggesting the r/h cup won’t be tight and may well work loose.
adroit
@Qebrus
Alright everyone,
Potentially a bit of a weird question here but I’ll try to explain as best as possible.
Fixing up a mates bike and taken the bottom bracket out for a re-grease, upon taking it out (un55) the main body is all okay, but the left hand cup has lost just under half its threads due to a small nick from where the chainstay attaches in the bb shell.
Apart from this small nick I cant seem to file out, the shell is great thread wise. Now if I screw in the left hand cup first all the way in with a nice amount of grease and torque down and then put in the main body that can screw in perfectly would this be sufficient.
Cheers!