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  1. #1
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    STI Lever Deflection Problem

    Hello.

    I have a problem with my rear STI 105 lever that is best described with pictures. Whenever I shift the bike (up or down) while the level is fully seated (i.e. not braking), the level top is deflecting out of the hood seat. This causes the brake lever to shift towards the center of the bike and annoy the living cramp out of me.

    I'm an experienced mtb mechanic, but my knowledge of STI shifters is limited. Has anyone seen this before? Any suggestions for a fix?

    2003 105 STI
    Shifting and braking are good
    Cables and housing are a little old and gummy (I will replace them this weekend), but that doesn't seem to be the problem as I can deflect the lever without shifting.

    Correct seating:


    Deflected seating after a few shifts:

  2. #2
    Senior Member
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    Pittsburgh, PA
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    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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    Check that the pivot pin for the lever is seated properly. It looks like one end of the pin has moved out of its seat.

  3. #3
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    Quote Originally Posted by HillRider
    Check that the pivot pin for the lever is seated properly. It looks like one end of the pin has moved out of its seat.
    Thanks. Noob to STI here.

    How do I get to the pivot pin? Is there a reference source I can get? It may not be worth typing me through it.
    Last edited by III-V; 09-16-05 at 10:21 AM.

  4. #4
    Senior Member
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    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
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    The pivot pin is the short pin the brake lever is mounted on and rotates around. Look under the lever assembly and you'll see it. If you don't know what I'm describing, a trip to your LBS is really in order.

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