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  1. #1
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    Loud Squeeking when Pedaling

    Hi this is my first post and I must say I am a total n00b when it comes to mechanics.

    I ride a old repco lakeside mountain bike to work each day and over time it has developed a loud squeek when I pedal. I asked one of the guys at work about it and he identified the problem as loose cotter pins giving me brief instructions on how to fix the problem.

    As I am a total n00b I'm worried that I will do something wrong and end up having to walk to work which is quite a distance.

    Can someone help me out with some images or detailed instructions on how to fix this without damaging the bike?

  2. #2
    feros ferio John E's Avatar
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    Are your cranks indeed affixed with cotters, which run perpendicular to the bottom bracket shaft? These went out of style before mountain bikes became popular. Most bikes built since the late 1970s use cotterless cranks, which are affixed by a bolt which threads directly into the (hollow) spindle, or, occasionally, by a nut which threads directly onto the (solid) spindle. You can tap the blunt ends of your cotters with a rubber mallet, and then tighten the nut on the opposite side carefully (8 or 9mm bolts are very easy to shear off). You can tighten a cotterless crank's fixing nut with a socket wrench, usually 14 or 15 mm.
    "Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
    Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
    Peugeot: 1970 UO-8, S/N 0010468
    Bianchi: 1981 Campione d'Italia, S/N 1.M9914
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  3. #3
    Junior Member
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    could be a loose crank arm bolt, a loose pedal, or possible, lke happened to me; as simple as dry threads between the bottom bracket housing and cassette. hope it is one of these simple things. if it is an old cone and bearing type bb, could be dry and need overhauling/greasing. good luck

  4. #4
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    Actually I dont think it has cotter pins.
    I tried loosening the pedal arms and then opening the crank but i'm worried the bearings will fly out or something. I really don't know what I'm doing with bike mechanics and don't want to walk to work.

    All I know is that its dry in there and rusty.

    Thanks

  5. #5
    Older Than Dirt
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    Quote Originally Posted by Honeycomber
    Actually I dont think it has cotter pins.
    I tried loosening the pedal arms and then opening the crank but i'm worried the bearings will fly out or something. I really don't know what I'm doing with bike mechanics and don't want to walk to work.

    All I know is that its dry in there and rusty.

    Thanks
    Dry and rusty doen't sound good. Take a look at the Park Tool website and proceed with caution.


    http://www.parktool.com/repair_help/FAQindex.shtml

    Doc

  6. #6
    Senior Member
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    Why not take it to the LBS? I'm not certain tackling a bottom bracket is at good first project for someone with your admitted unfamiliarity with bike mechanics.

    Good luck.

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