Thread: Pump head pops off with threadless presta valve?
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Old 07-31-05 | 08:23 PM
  #3  
Al1943
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Joined: Feb 2005
Posts: 9,438
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From: Oklahoma

Bikes: Trek 5500, Colnago C-50

Are you sure you have the chuck latch in the correct position?

You may need a new "O" ring or whatever is inside the chuck.

I use a Joe Blow with Michelin tubes.
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