Tuning Curious if anyone does this religiously as part of maintenance

[Bigragu]

On the male QD of PCP’s, drop in a couple of drops of silicone oil prior to attaching the tanks fill hose and injecting that oil throughout the system. 

Not flooding it, just a couple of drops like very five top offs.

on fill probe type guns, just applying silicone oil or grease on the probe’s o rings will get that little bit of lube into the system.

 

[bigHUN]

I like your idea. I am silicon lubing the orings 2-3 times a refil

 

[Bigragu]

Well, it’s mainly the valve stem to valve seat, valve stem o rings, along with regulator washer springs and reg piston that I feel need that light coat of lube. 

 

[kayaker]

Me bad no I haven't to be honest , but needed today to put some on those small bearings on the foster disconnect to get it on my fill probe . I also lube the probes o rings tough

 

[airgunmike56]

I do it , I put a dab of silicone grease on the o rings of the probe , I sometimes put a little on the end of the probe, I got a very small silicone grease container about the size of a 177 polymag tin , That I have been using for 12 years... But out of my seven guns I have never replaced a O ring, 

Mike

 

[Ripper]

Do that with all my PCPs. For the same reason CO2 air guns are done.Keeps all the O-rings from drying out.

 

[Long_Gun_Dallas]

I do this just so my orings dont bind, lol.

 

[Triggernosis]

What specific oil and grease do y'all recommend?

 

[elh0102]

I see no advantage to getting lube into the system. The O rings that are under pressure will not receive it, and probably should not anyway. With rifles that use a probe fill system, Taipan, Revere, etc., I sometimes will rub the probe with my fingers with only a tiny amount of lube basically rubbed into my skin. But, this is only infrequently. Some would argue that the grit and grime pickup up by the lube offsets any small good in might do in protecting the O rings, maybe they're right. I guess it's kind of like lubing pellets, if you think it helps, then it does.

 

[Triggernosis]

I see no advantage to getting lube into the system. The O rings that are under pressure will not receive it, and probably should not anyway. With rifles that use a probe fill system, Taipan, Revere, etc., I sometimes will rub the probe with my fingers with only a tiny amount of lube basically rubbed into my skin. But, this is only infrequently. Some would argue that the grit and grime pickup up by the lube offsets any small good in might do in protecting the O rings, maybe they're right. I guess it's kind of like lubing pellets, if you think it helps, then it does.

This makes sense. ^^^ Only if your system had a leak would any of the lubrication travel to the o-rings, right?

 

[dizzums]

wrong lol .. silicone oil is needed to keep the orings in good shape and some will blow in when filling .. as far as 'injecting' oil into the system i dont know about all that lol, i would say it would be wise whenever you have a gun apart to generously wipe down the air tube and orings with silicone oil and leave it, not dripping, just coated .. but as far as leaving orings dry to avoid dirt .. go ahead lol .. i'd have some orings and fill fosters onhand though .. but to the previous question, the silicone shock oil like they use in RC hobby shocks is excellent stuff, about 30-40 weight is best, its better than grease and will flow and penetrate ...

 

[bandg]

I see no advantage to getting lube into the system. The O rings that are under pressure will not receive it, and probably should not anyway. With rifles that use a probe fill system, Taipan, Revere, etc., I sometimes will rub the probe with my fingers with only a tiny amount of lube basically rubbed into my skin. But, this is only infrequently. Some would argue that the grit and grime pickup up by the lube offsets any small good in might do in protecting the O rings, maybe they're right. I guess it's kind of like lubing pellets, if you think it helps, then it does.

This makes sense. ^^^ Only if your system had a leak would any of the lubrication travel to the o-rings, right?

I can't see "this makes sense" lining up with the rest of the statement. How does anyone know "where" the silicone would go. Stating that o-rings under pressure would not receive it makes no sense to me. And if it did "get to" a leaking o-ring then maybe that would be helpful.

 

[Bigragu]

When I started this post the idea of preserving o rings wasn’t my concern. The way I see it, once my lubed o ring is in place, unscathed, it’s job is to seal until one day I disassemble the gun and it will get replaced.

Adding a few drops of silicone was meant for internal moving parts within the HPA system, where lube is needed and over time it’s lube that was originally applied got shot out the barrel. 

 

[elh0102]

Any lube inserted into the system can only get to a pressurized O ring if it's leaking, so it should be replaced. Inserting silicone in a general, nonspecific way is not a great idea. Should it get to pressurized metal bearing surfaces, it can cause seizing. These operating systems are designed to run dry, and they generally work fine that way. 

 

[Mike_Lenardon]

I lightly lube the o-rings on the fill nipple and the female foster fitting on the line coming from the bottle. Used to do the male fittings but the female end seems to work better for me. 

 

[bandg]

I agree that silicone is not the thing to use on moving parts. Not certain that added silicone couldn't help lube o-rings, however.

 

[Triggernosis]

What do manufacturers recommend? Seems they would know.

 

[Revoman]

Yeah, I have not read anything from the manufacturer (FX or Daystate) stating to do this. One would think that if it was a recommended practice, then it would likely be accepted by all manufacturer's?

mike

 

[elh0102]

I believe you will see the makers recommending lightly lubing traditional moving bearing surfaces, such as bolt lever, safety, trigger levers, etc. For rifles that use fill probes, something like mineral oil or synthetic grease, very light coat. This is what I found. No mention of any type lube allowed in the pressurized operating system.

 

[Bigragu]

Manufacturers also never suggest servicing your own pcp, either,but encourage you to send it in for service.

my concern with this is valve stem to valve seat sticktion- Edit: or where the valve stem seals to the Bore of the valve body.

Isnt it funny how when a Huma reg acts up over time, we “rebuild” it.

we really aren’t rebuilding it, but instead swapping in new o rings and re applying lube to the washer springs(after a thorough cleaning, of course). Then miraculously, everything works again.

on a few occasions I’ve found that erratic velocities have stemmed from valve sticktion, and a light coat of silicone oil or grease almost always fixes the problem. That light coat of lube over time will get shot out the barrel.