FX Valve removal help (FX Indy/Independence)

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SilentSquirrel

SilentSquirrel

Member
Jun 1, 2019
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The other Washington, United States
Hello
My FX Independence has a slow leak.
A balloon test shows air coming out the barrel.
Therefore, I believe the valve is leaking.
I have the block (receiver) stripped down
(Pump, barrel, hammer & spring removed)
But I do not understand how to remove the valve

A schematic and parts list is attached
Parts 15-23

Hoping a member who knows this FX can help

Thanks
Edward

PS
I believe the valve might be similar to the one in the Wildcat

View attachment FX Independence SCHEMATIC (FX) updated over rich.pdf
 
Hello @SilentSquirrel ,
What a neat air rifle! Something similar happened to my FX Independence, and I'm pretty sure I caused it by dry firing it with insufficient air in the reservoir, causing damage to the polished surfaces of the valve pin. It's been a few years now and I'm a little fuzzy but I probably watched a video about disassembly.

I think the action is the same as the FX Royale 400, so if you can find procedures or videos for that model, it should apply to the Independence.

The schematic is missing the conventional dotted lines that show where parts connect to mating parts. I seem to remember having to polish the sliding/sealing surfaces of valve pin part D 18. I think it is retained in the receiver block by the part D24 called (valve) guide. I believe this part threads in from the outside of the receiver block below the barrel. You can see the threads on it adjacent to the arrow for o-ring part d25. I think I had to use tweezers or needle nose pliers to carefully extract the valve pin from the machine pocket after removing the valve guide I remember it being difficult to pull out. I then polished the valve pin I think and seating surfaces to restore its seal. I may have used a dental pick to extract and inspect valve seat and o-ring in the very bottom of the receiver socket. I have looked through my personal photos and documentation for any notes I made during that repair but I can't find them.

Regards,
Feinwerk
 
Upvote 0
Here's an appropriate video from Ernest Rowe for the FX Royale action. It's a reassembly video so you will have to infer the disassembly sequence. At 2:25 he talks about what I was warning about - do not drive fire it with less than 100 bars of air pressure or you start damaging the valve pin!


Here's a screenshot showing Ernest using a hex wrench to install the valve assembly. So part D24 has a built-in hex socket for removal.

Screenshot_20230707_081702_Chrome.jpg


Good luck with your repairs.

Feinwerk
 
Upvote 0
rodrigo571 said:
Hi.
There's a video on Youtube: "FX INDY Rebuild Complete - Repair".
It is a tech. AOA video, good quality educational video...
Duration is more than 1 hour!! However, not sure if it covers the valve part...
Did you have a look at it?
Click to expand...
Thanks,
and Yes @rodrigo571
I have watched that video
Although very well done & helpful, it is about the pump and stops before valve removal
What interesting's that in the video he states that it is first in a series on the Independence/Indy
But they seem no to be found anywhere.
 
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@SilentSquirrel You're welcome. I had to send mine back to AOA because it was apparently an early model that used plain steel for one of the small pump mechanism tubes, which began to rust. They rebuilt the pump mechanism using a stainless steel part if I recall correctly. I have yet to do a rebuild of the pump myself, I understand it's critical to get certain spacings just right to keep the mechanism from jamming up .

When I had it apart to service the valve, it had a lot of silicone grease in the receiver/ plenum area that I had to clean out. It was quite gunky in there.

The Foster fill fitting on mine developed a leak years ago and I had to remove it and clean and lubricate the little check valve and o-ring in that. The gun has now started a slow leak again so I may have to do it again or use my bubble solution to find out where it's leaking. I never used that fill valve since I always use the onboard pump.

Regards,
Feinwerk
 
Upvote 0
One more comment, triggered by something that Ernest said in his video above. You might have to remove the pump assembly from the receiver to allow access to the valve guide threaded closure. I don't have the gun in front of me but you may not be able to spend a wrench without first removing the pump assembly. I think the pump assembly threads off or disconnects fairly easily but it's been a while. You don't have to disassemble the whole pump but just remove perhaps the arm and unscrew the tube assembly or something like that.
 
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Right tools for the job always helps to minimize possible damage along with yanking on your scalp-

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