Shimano LP25 Sealed Cartridge Bottom Bracket
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)