Originally Posted by
daniell
I think that the problem is in the chuck. When I tighten down it sometimes alleviates the problem. My question. How do I replace the o-ring in the chuck, and what size would I need?
I had the same symptom with my lezyne floor pump. They sell a replacement gauge kit, which I bought, but that didn't solve the problem. Next I bought their replacement 0-ring kit. But that didn't solve the problem either. So I then bought a replacement pump head. And that still didn't solve the problem. So now I have the most expensive floor pump ever that doesn't work.
And I now use some cheap ass Joe Blow pump that works perfectly.