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Not charging much air in flight
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dsavarese0812(at)bellsout
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PostPosted: Mon Dec 30, 2019 5:36 am    Post subject: Not charging much air in flight Reply with quote




On Monday, December 30, 2019, 8:33:12 AM EST, Mark Pennington <pennington.construction.inc.1(at)gmail.com> wrote:




You are correct.

My system ran better after soaking my snot valve in AV gas. Per your instruction
Mark
On Mon, Dec 30, 2019 at 8:28 AM A. Dennis Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
Quote:

Yes, that does look very clean. I missed the pictures. However, that does not change my comment about removing and flushing out the shot bottle.
Dennis


On Monday, December 30, 2019, 8:18:10 AM EST, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:


Dennis.
He replaced the valve on the snot valve.

Take a peek at the attached picture.

Looks pretty clean.
Mark.

On Mon, Dec 30, 2019 at 8:12 AM Anthony Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:
Quote:
--> Yak-List message posted by: Anthony Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> You replaced the “snot” valve with a swagelok? Or do you mean the main air valve. Removing, disassembling and flushing out the snot bottle fixes many “not charging “ to the break over preset pressure of the pop off/ pressure relief valve problems. Dennis Sent from my iPhone > On Dec 29, 2019, at 8:58 PM, AlaskaChang801 <themilnes95(at)gmail.com (themilnes95(at)gmail.com)> wrote: > > --> Yak-List message posted by: "AlaskaChang801" <themilnes95(at)gmail.com (themilnes95(at)gmail.com)> > > I've been dealing with a similar issue, on mine. I can charge to 50 ATMs and go fly and the compressor can't put the air back to anything higher than about 38 ATMs so I'm thinking I'm dealing with a tiny leak in the UP side somewhere. Haven't been flying for over a month due to waiting on parts, but I'm going to try and follow advice given on another Red Star site to soak the felt filter on the top of the compressor and see if it helps seal the rings. If it does, then I'm looking at a weak compressor. If not then it'll be leak detection time. > > As for the snot valves. Mine started to become harder to open as they gunned up and finally started to not seal properly when closed. So I replaced mine with swagelok 1/4 turn stainless ball valves..SO MUCH NICER!! > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=494098#494098 > > > > > Attachments: > > http://forums.matronics.com//files/img_0318_180.jpg > http://forums.matronics.com//files/img_0318_265.jpg > > > > > > =========== br> fts!) r> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution -Matt Dralle, List Admin. =========== List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Yak-List =========== FORUMS - eferrer" target="_blank">http://forums.matronics.com =========== WIKI - errer" target="_blank">http://wiki.matronics.com =========== b Site - -Matt Dralle, List Admin. rel="noreferrer" target="_blank">http://www.matronics.com/contribution ===========







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hill(at)doctor-hill.com
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PostPosted: Mon Dec 30, 2019 5:44 am    Post subject: Not charging much air in flight Reply with quote

Bob makes a good point. Carbon buildup on the compressor output piston/banjo fitting may be overlooked. Attached is an image. Also, one of the several aluminum crush washers between the components of this fitting may fail. Had this happen on the way home from an event several years ago and it mimicked a low output compressor. The pneumatic system for the CJ has seemingly countless failure points. For other types of leaks, if an ultrasonic detector fails to find the problem, sometimes we just have to start at one end and work our way back until the source is found. Another argument in favor of replacing the dynamic parts of the pneumatic system at regular intervals.
Warren Hill
N464TW
Mesa, AZ

[img]cid:11377D8B-579A-43E5-8883-178B9F7AA187(at)Home[/img]
Quote:
On Dec 30, 2019, at 6:17 AM, Robert Graves <flibob(at)att.net (flibob(at)att.net)> wrote:
--> Yak-List message posted by: Robert Graves <flibob(at)att.net (flibob(at)att.net)>Don’t forget the banjo fitting. It can get gummed up and also be loose. And easy check.Bob Graves Sent from my iPhone
Quote:
On Dec 29, 2019, at 10:26 AM, motoadve <larry(at)motoadventuring.com (larry(at)motoadventuring.com)> wrote:--> Yak-List message posted by: "motoadve" <larry(at)motoadventuring.com (larry(at)motoadventuring.com)>Thanks for your detailed reply.Last annual (first to me) we replaced all the air valves.I fly it often, 2 or 3 times per week, last flight was 4 days ago, temps about the same, high 40s.Nothing was changed since last flightLately the snot valve has been very hard to open.Surprisingly after this flight was easy to open (maybe because not much air was left?) when I opened it had a lot less pressure than usual.Have had an air leak in the rear flap lever, after I close the main air tank, it looses air quick, 15 minutes and its gone, its been like this since I bought the plane.Main air tank is holding air.--------www.Backcountry182.comCessna 182 PCJ -6Read this topic online here:http://forums.matronics.com/viewtopic.php?p=494090#494090
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AlaskaChang801



Joined: 26 Jan 2018
Posts: 33

PostPosted: Mon Dec 30, 2019 3:32 pm    Post subject: Re: Not charging much air in flight Reply with quote

pennington.construction.i wrote:
That valve swap looks like the way to go.  

You don’t have record of the part number for that valve handy do you. ?
Mark

On Sun, Dec 29, 2019 at 9:00 PM AlaskaChang801 <themilnes95> wrote:

Quote:
--> Yak-List message posted by: "AlaskaChang801" <themilnes95>

I've been dealing with a similar issue, on mine. I can charge to 50 ATMs and go fly and the compressor can't put the air back to anything higher than about 38 ATMs so I'm thinking I'm dealing with a tiny leak in the UP side somewhere. Haven't been flying for over a month due to waiting on parts, but I'm going to try and follow advice given on another Red Star site to soak the felt filter on the top of the compressor and see if it helps seal the rings. If it does, then I'm looking at a weak compressor. If not then it'll be leak detection time.

As for the snot valves. Mine started to become harder to open as they gunned up and finally started to not seal properly when closed. So I replaced mine with swagelok 1/4 turn stainless ball valves..SO MUCH NICER!!




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=494098#494098




Attachments:

http://forums.matronics.com//files/img_0318_180.jpg
http://forums.matronics.com//files/img_0318_265.jpg



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I replaced all my chinese valves to Swagelok. Mains, Emergency and Snots.
The snot valve is SS-43GM4-S4
They are not cheap, but the piece of mind that 1/4 turn stainless ball is not going to leak is worth it. I don't have the other P/N's handy, but if you go that path and want them I can dig them out. As for the other picture of the snot valve seat..mine were worse than that and hence the reason for the replacement..
When you take them off you have them apart and thoroughly clean them out inside and tap the snot body to accept the 1/4" NPT thread and apply a good coating of pipe dope and don't over tighten or have the possibility of stripping it completely out, but just like any other mod, slow and sure and don't use gorilla force to tighten.


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motoadve



Joined: 23 Apr 2009
Posts: 116
Location: Seattle

PostPosted: Fri Jan 03, 2020 8:17 am    Post subject: Re: Not charging much air in flight Reply with quote

Water filter O ring was leaking quite bad.
Problem found.


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