Shimano LP25 Sealed Cartridge Bottom Bracket I recently attempted to rebuild a sealed cartridge Shimano LP25 bottom bracket. These are meant to be replaced when worn out, but I thought: if someone on YouTube can do it, I can too. The problem is that the top bearings no longer fit, as the first picture illustrates. I am completely certain that these are the exact bearings I removed from the top fixed flange race when I disassembled the bracket. My question is: what exactly is going wrong?
I was attempting to insert the fixed flange onto the spindle incorrectly, the result of a poor diagram made when disassembling the bracket. If anyone else finds this post and needs help reassembling a similar sealed cartridge bottom bracket, here are step-by-step instructions. I wiped down the components before taking the pictures for clarity.


Insert seal (notched side down) and pack large bearings onto spindle cone.





Drop fixed flange onto spindle and pack small bearings.






Insert cone, lock washer and hex nut onto spindle.






Reseal fixed flange (notched side up)