WP HFT/Springer Champ '15
Hill pump mk2 question
When i am using my pump,it will work fine on the down stroke but when i then let go of the handle, the handle will start going up by itself. The pressure from the rifle escaping into the pump? Is this a one way valve issue? I know it is difficult to diagnose without stripping it but can it be fixed with a clean and lube or do i have to replace parts?
That could be some debris on the one way valve, on my, that's not a Hill, was happening the same, I just disassembled, clean and replaced the little spring on it, the was a bit of "gunk"from the lube accumulated and preventing the one way valve to fully close, there for the pressure on the hose was returning to the pump.
There is a spring loaded cone shaped brass valve that uses a std o-ring in the bottom housing, I bet it's the o-ring that's worn out.
You have to unscrew the main tube from the housing to get to the valve.