Reply To: FX Pump Rebuild

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RM100GUY
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I just rebuilt a Hill Mk4, I know it's a different manufacture, but I'll relate to you what I ran into the same problem you have after I resealed mine.  I had to email Hill in England and they had the problem solved in two emails.  Long story short I didn't change all the orings some looked ok, make sure you change them ALL, I replaced that 1 oring they recommended and it worked perfectly, make sure it is good and clean and follow FX's lube instructions. Hope that helps.