BB preventive maintenance?

pep.fermi
pep.fermi Posts: 383
in Workshop

My press fit BB developed a very ugly squeaky noise, and a little play. I plan to dismount it, clean it, regrease, reinstall it. MAYBE this will fix it.

Question:

Is it recommended to service it regularly BEFORE any symptoms appear?

A) better prevent than repair

B) don't fix what's not broken

Thanks

Comments

  • MidlandsGrimpeur2
    MidlandsGrimpeur2 Posts: 1,901

    If your frame is carbon, it is usually recommended not to grease a pressfit bb, it should go in dry.

    It depends on the BB and how much you wash your bike. Pressfit on a summer bike I tend to leave, not much water tends to get in and the bb stays okay until general wear and tear takes effect. Others like a gxp on a winter bike in my case, need regular removal and re-greasing otherwise they are shot in 6 months.

    It really depends on seals, bb type, usage and your bike cleaning habits!

  • pblakeney
    pblakeney Posts: 26,874

    Steel bike and screwed cups so likely different but I strip mine down annually. Seems to work.

    The above may be fact, or fiction, I may be serious, I may be jesting.
    I am not sure. You have no chance.
    Veronese68 wrote:
    PB is the most sensible person on here.
  • First.Aspect
    First.Aspect Posts: 16,500
    https://forum.bikeradar.com/discussion/comment/21079911#Comment_21079911

    You can't service the press fit interface.

    There's nothing preventing you from pulling the cranks, popping the plastic cover off the bearings and injecting some grease. That's pretty much all you can do to a press fit.

  • pep.fermi
    pep.fermi Posts: 383
    edited July 6
    https://forum.bikeradar.com/discussion/comment/21079911#Comment_21079911

    Thanks a lot for saying no grease.

    Yes, indeed carbon frame.

    I'll studying the usual GCN and ParkTool YouTube before talking action...

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