sqeaking bb90 Trek 5.3 2011

[gabkr]

Got caught in a rain storm this weekend,since then,noise coming from bottom bracket area....sounds like it could be from a rubber seal. Never taken cranks off,picked up the plastic star tool,and teflon grease the other day.....any hints, suggestions or tricks appreciated.( 5.2 Madone not 5.3) about 4k miles

[reptilezs]

check if the bearings have a loose fit in the frame. pack grease under the red seals

[mechBgon]

I had one start squealing on a customer a couple months ago. I went to the extent of completely flushing out and repacking the offending cartridge, but the customer brought his bike back a few days later with the same problem, so I replaced the cartridges.

[gabkr]

Got it apart this weekend,one bearing was leaking a brown drizzle,and turning rough,other seemed OK,took the seals off with a dull steak knife,and soaked it in Aero Kroil (Kano).then scrubbed and cleaned bearings and races.washed it all down w/ some Dawn and hot water,seemed clean and turned freely. Wanted to get some Phil's Waterproof grease,but used some Finish Line Teflon to pack bearings. Took for a couple of miles test ride,seems OK. Will take for a long PM ride Tuesday. Will probably pack both bearings w/ Phil's,when I get a chance.

[davidad]

Got it apart this weekend,one bearing was leaking a brown drizzle,and turning rough,other seemed OK,took the seals off with a dull steak knife,and soaked it in Aero Kroil (Kano).then scrubbed and cleaned bearings and races.washed it all down w/ some Dawn and hot water,seemed clean and turned freely. Wanted to get some Phil's Waterproof grease,but used some Finish Line Teflon to pack bearings. Took for a couple of miles test ride,seems OK. Will take for a long PM ride Tuesday. Will probably pack both bearings w/ Phil's,when I get a chance.

Get some good lithium grease from the auto parts store.