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Shimano pedal overtightening

  • This topic has 8 replies, 5 voices, and was last updated 6 years ago by Anonymous.
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  • June 4, 2020 at 7:57 pm #30796
    road

    I needed to replace some of the ballbearings in my shimano pedal which was easy enough and I adjusted the cone/locknut correctly. After riding I noticed the pedal was stiff so I reopened to find the cone/locknut had both screwed in tighter. Can anyone give me some advice please?

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Viewing 8 replies - 1 through 8 (of 8 total)
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  • June 6, 2020 at 6:49 pm #960193
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    Anonymous

    ill retighten it and use some

    ill retighten it and use some threadlock, just to be sure

    June 6, 2020 at 6:46 pm #960191
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    Chris Hayes

    I could be more explicit and

    I could be more explicit and say that you probably didn’t tighten the lock-nut…:-)

    June 6, 2020 at 5:34 pm #960189
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    Anonymous

    sounds feasible thanks

    sounds feasible thanks

    June 6, 2020 at 5:34 pm #960187
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    Anonymous

    sounds feasible thanks

    sounds feasible thanks

    June 6, 2020 at 1:00 pm #960185
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    ktache

    I don’t know if this might

    I don’t know if this might help.

    https://www.parktool.com/blog/repair-help/spd-pedal-overhaul

    I had problems getting enough torque on the locknut on one of my shimano cage pedals many years ago (DX I believe) and I had to buy the odd little tool.

    I got some XT cage pedals for the good bike, and they had the removable axle/spindle and that made things much easier.

    Whenever my cup and cones have tightened themselves it’s generally because I have not managed to put enough ooompf into tightening the cone and locknut against each other.  Good Luck.

    Of course I have stripped threads on wheel spindles giving it too much. Grrr.

    June 6, 2020 at 12:19 pm #960183
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    No Sweat

    The simplest explanation is
    The simplest explanation is likely to be that you did not tighten the locknut enough to actually lock it against the cone and the axle.
    I’d try again – and be quite firm.

    June 6, 2020 at 9:33 am #960181
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    Anonymous

    Thanks for the reply,
    Thanks for the reply, unfortunately it doesn’t answer my question

    June 5, 2020 at 9:28 pm #960179
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    Chris Hayes

    I did mine recently to remove

    I did mine recently to remove some play. You’ll need a 10mm and 7mm spanner to adjust the bearing correctly (if they’re 105s or Ultegra – I assume the rest are the same)… I used a ring spanner for the 10mm nut which adjusts the tension / play, and an open spanner for the 7mm which is the lock-nut.  Assuming you cleaned everything out and replaced the grease.  Otherwise, it’s a bit trial and error as the tolerances are quite small, but loosen the 7mm lock-nut, loosen the 10mm a fraction – tighten the lock nut – and then re-assemble. Had to do mine two or three times…it’s very fiddly!  I did it without a vice – which probably explains the trial and error.  It would be easier with a vice…

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