FX hand-pump problem

[Mark_Walt]

(for the purpose of simplification I refer to a "stroke" as one complete raising of the handle and returning it all the way back down)
I have an FX 3-stage pump (purchased December 2015) that I've been having some problems with. When I originally got the pump I was able to attach it to my FX Wildcat and the first 3-5 strokes I did would fill the pump right up to whatever the fill pressure was, lets just say 150bar. Now whenever I fill it it takes 12 strokes to fill it to 150bar and 16 strokes to fill it 200bar. This is just putting the pressure in the hose, not in the gun, and I am using the supplied hose. Is this what I should be expecting or do you guys think there is a leak somewhere? 

 

[andrewjbae]

Hey Mark,

I PM'd you but I'm having the exact same problem with my Wildcat and my FX handpump. I sent it in to AoA due to this issue and they gave it back to me charged back up to about 250 bar, I shot it down to 150, tried to pump it up and no go; the air stays in the hose.

Puhleeze tell me you found a fix for this! AoA sent this gun to FX to get repaired, and I sent the pump along with the gun and asked for them to check out the pump, too. Maybe they were able to charge the gun but never got around to taking a look at the pump itself, or didn't try to use my handpump to charge the gun.

Or, hopefully it's an operator error and I can blame my bone-head self and fix this issue right now. I'm dying!

I'm praying.

Thanks man

 

[Slayerious]

Came across this while searching the forum.. This might be caused by the FX pump 2 stage piston screwing out of the position. I suspect this because
A) No air is coming out or leaking
B) You still use force to pump (You are pressurising pretty much the same air over and over)
C) You can maybe be able to fix this without a disassembly by pumping a gun to pressure the pump and then turn the handle quickly clockwise 5-10 times. You can try pushing it down too.
This should screw it back a small distance and it should start pumping again.

You'd better put loctite to the threads inside the pump which are hand loose upon the next disassembly.

I have several hours of maintenancing one behind me until TODAY I finally decided to get a tank.