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  1. #1
    mtbr member
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    pump is supposed to be shrader/presta compatible... but....

    I've a Giant Control Tower 2 from a few years ago. Supposed to be shrader and presta compatible and in fact there is an icon for both on the head but I cant seem to get it to work on a presta.

    Yes, I've loosened the lock nut all the way and pressed it once etc, but when I press the pump head on to it and flip the leaver, its not opening the valve (no pressure registers on the dial and pumping just pressurizes the pump's cylinder/hose).

    Works fine on shrader.

    Is there something I'm missing....?
    Last edited by XC_Noob; 04-12-2013 at 04:37 PM.

  2. #2
    there's no bread
    Reputation: byrot's Avatar
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    Nov 2012
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    271
    On my pump, I have to take out the internals from the head and flip them around. Easily done by unscrewing the lock nut to gain access.

  3. #3
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    There is a grommet of sorts in the pump's head but if reversed the cap wont fit over it....

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