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Headstock or wheel bearings? How to check?

  • 29-01-2015 8:51pm
    #1
    Skill Magill
    Registered Users, Registered Users 2 Posts: 2,576 ✭✭✭


    The TDM's front end is all over the place, when I go hard down it just doesn't feel safe, theres a jitter/shake on the bars. Whats the best way to test whether its the headstock or wheel bearigs (assuming its one or the other)


Comments

  • #2
    Faing
    Registered Users, Registered Users 2 Posts: 481 ✭✭Faing


    For headstock play, put her up on the mainstand(If you still have it) ,grasp both forklegs and pull towards you, if there is any clunking, however slight, you have play. Sometimes they will adjust up (Not always)
    Forgot to add, let the forks drop from side to side(lock to lock) and feel for any notchiness in the bearings or tightness.

    Wheel bearings, turn wheel to one side, grasp wheel by the tyre at 4 0'clock and 10 0'clock and again push and pull towards you, any play which you will either feel or even hear means wheel bearings need a coat of looking at.

    Hope this helps.


  • #3
    galwaytt
    Registered Users, Registered Users 2 Posts: 12,822 ✭✭✭✭galwaytt


    As above, but also: sit on the bike, front brake on fully. Then rock the bike back and forward against the brake and if they're bad enough you'll hear the click at the headstock. If you can reach, put your finger where the headstock nut is whilst doing it and you might just feel it clicking too.

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  • #4
    Skill Magill
    Registered Users, Registered Users 2 Posts: 2,576 ✭✭✭Skill Magill


    You guys are the best


  • #5
    rolliepoley
    Closed Accounts Posts: 2,874 ✭✭✭rolliepoley


    It could also be a cupped tire caused by low tire pressure, check the tire for an even curve, no bumps or uneveness along the threads.


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