You should now have enough clearance. Bottom Bracket Installation. If they do not, Try hitting the crank bolt sharply with the rubber or wooden mallet several times. If you choose to go the spacer route, slide the BB spindle and crank arm out of the bb, and place a thin spacer next to the sprocket washer, and slide the BB spindle back into the bb. Shop Now. Do not use a sledgehammer.
You can use the seat tube of the bicycle to help you judge that the cranks are parallel to each other. Do not hit the bearings as hard as you can. You can even use your cranks, if you already have one crank arm installed on the BB spindle. Make sure to tighten this cup if it loosens cup make cause cranks to stop and rider may fall suddenly. This article will discuss the installation and service of the BMX three piece crankset using the 48 spline spindle.
The euro threaded cups will be in a left-hand and right hand threading. Do not hit the bearings in the center race- hit the outside edges, starting at the top and working your way around the edges, with the intent of pushing the bearing in as evenly as possible. Standard shimano BB tool required. I like being thorough and bike mechanics requires a lot of attention to detail.