Today's Message Index:
----------------------
1. 12:23 AM - Re: CJ oleo repair (Nanchang CJ6)
2. 04:16 AM - YAK/CJ strut filling tool for sale (Elmar & Manuela Hegenauer)
3. 05:58 AM - Re: Need Yak-52 Prebuy in Tulsa OK (BPA)
4. 06:45 AM - Re: Effects of air tool oil in a CJ pneumatic system (Elmar & Manuela Hegenauer)
5. 06:53 AM - Re: YAK/CJ strut filling tool for sale (Bradly Banks)
6. 07:55 AM - Re: Effects of air tool oil in a CJ pneumatic system (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
7. 08:31 AM - Re: YAK/CJ strut filling tool for sale (Jon Boede)
8. 08:52 AM - Re: YAK/CJ strut filling tool for sale (Elmar & Manuela Hegenauer)
9. 09:33 AM - Re: Effects of air tool oil in a CJ pneumatic system (Brian Lloyd)
10. 10:30 AM - Re: Need Yak-52 Prebuy in Tulsa OK (Robin Hou)
11. 11:00 AM - Re: Re: Effects of air tool oil in a CJ pneumatic system (doug sapp)
12. 11:55 AM - Re: Effects of air tool oil in a CJ pneumatic system (Jan Mevis)
13. 12:20 PM - Re: Effects of air tool oil in a CJ pneumatic system (Elmar & Manuela Hegenauer)
14. 12:39 PM - Re: Effects of air tool oil in a CJ pneumatic system (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
15. 12:54 PM - Re: Re: Effects of air tool oil in a CJ pneumatic system (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
16. 01:13 PM - Re: Re: Effects of air tool oil in a CJ pneumatic system (Cliff Coy)
17. 03:50 PM - Re: Effects of air tool oil in a CJ pneumatic system (Brian Lloyd)
18. 03:54 PM - Re: Re: Effects of air tool oil in a CJ pneumatic system (Brian Lloyd)
19. 04:35 PM - Re: Re: Effects of air tool oil in a CJ pneumatic system (Brian Lloyd)
20. 07:38 PM - Re: Effects of air tool oil in a CJ pneumatic system (Warren Hill)
21. 11:37 PM - Re: Effects of air tool oil in a CJ pneumatic system (Jan Mevis)
Message 1
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| Subject: | Re: CJ oleo repair |
Our company have much advantages to supply Nanchang CJ-6 parts in China. Maybe
we could help you.
Please contact me off list. E-mail to : lcdzkj@live.cn
Sarah
--------
Sarah's E-mail:lcdzkj@live.cn
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=372253#372253
Message 2
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| Subject: | YAK/CJ strut filling tool for sale |
I have a custom made strut filling
set-up for use on scuba bottles
for sale (see attached pictures),
asking US$ 295 .
Please contact me off list or visit
me on ebay.
cheers
Elmar
Message 3
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| Subject: | Need Yak-52 Prebuy in Tulsa OK |
Contact Mike Hastings 918-809-8271. He may be able to do the pre-buy or
will no someone who can.
Allen Barrett
BPE, Inc.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Robin Hou
Sent: Tuesday, May 01, 2012 10:20 PM
Subject: Yak-List: Need Yak-52 Prebuy in Tulsa OK
I am looking for a shop or A&P to do a prebuy inspection in Tulsa OK
area. Any recommendation is greatly appreciated.
Robin Hou
rmhou@yahoo.com
626-298-2057
Message 4
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
Thank you very much for your informative
posting and the pictures.
The same happened to me on several
occasions but with one difference, only
the after market rubber pads got dissolved
while the original seals are still intact.
The CJ maintenance manual states very clearly
that one should lubricate the pneumatic system
by injection specific oil into the system on a regular
schedule.
If anybody offers the original rubber pads for
the check valves, please contact me off list.
cheers
Elmar
Message 5
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| Subject: | YAK/CJ strut filling tool for sale |
Nice piece of kit ......
Regards
Brad
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar & Manuela
Hegenauer
Sent: 02 May 2012 01:13 PM
Subject: Yak-List: YAK/CJ strut filling tool for sale
I have a custom made strut filling
set-up for use on scuba bottles
for sale (see attached pictures),
asking US$ 295 .
Please contact me off list or visit
me on ebay.
cheers
Elmar
Message 6
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| Subject: | Effects of air tool oil in a CJ pneumatic system |
I had exactly the same results with the chevron seals in my YAK-50's
landing gear actuators, which caused them to fall to pieces.
Fortunately, the emergency gear blow down worked. This event was posted
to the YAK-List about a decade ago. Since then, the idea of putting oil
into the air system has once again grown in popularity.
Good luck with that.
Mark Bitterlich
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Buddy Moman
Sent: Tuesday, May 01, 2012 11:42 PM
Subject: Yak-List: Effects of air tool oil in a CJ pneumatic system
The information below is based on my recent experience. As is
appropriate for you, read, disregard, or use.
I'm the prior owner of a Yak-52 and a Yak-52TW. In both those airplanes
I used air tool oil in their pneumatic systems with no apparent ill
effects. The oil I used was Marvel Tool Oil which is
manufactured by---you guessed it---the makers of MMO. Considering
years of satisfactory experience, I confidently used that same Marvel
tool oil in my recently acquired CJ.
My airplane "seemed" to be operating quite normally until I returned
from a few days at Sun N Fun. When I landed at my home airport, I did
the usual shut down and secured the airplane--only to notice then that
the EMERGENCY air pressure was zero. It was not at zero at the time of
doing my landing checklist and had never leaked before. The following
day I began to pull apart the check valves, beginning with the one that
holds pressure in the emergency bottle. That seal was quite
deteriorated, apparently failing during the last leg of my flight. The
seal on the other side of that same tee was similarly deteriorated. I
next went to the second tee, located on the other side of the
firewall...same results---two more badly deteriorated seals.
A final check was made at the pop-off tee, and attached is a photo
showing those recently disassembled check valves. The black bits laid
out between the various parts are placed to indicate where those bits
were found. The black bits are what is left of the seals, which had
completely deteriorated. Bits of the seals were also found on the "in"
port of the water filter. One might think that, since both check valve
seals at the tee are exposed to engine oil via the snot bottle, that may
be the cause. Not so!
Subsequent tests on the seals revealed the following:
New seals are .4750" in diameter, and .067" in thickness. This was
verified by measurements also taken by Doug Sapp. A NEW seal placed in
air tool oil for several days swelled to .5300" diameter and .
0725"thickness...roughly 11% increase in Dia. and 8% in thickness.
Two more NEW seals that were in valves I had overhauled for inventory,
with a drop of tool oil on the piston, had grown in dimension almost
exactly the same as the seal I soaked in the oil. Obviously, any
exposure to this oil had profound effects on the rubber.
I chose to ignore posted advice by Doug which said something close
to..."If you don't know what your are doing, err on the side of a dry
system." I had ass/u/med what a Yak could digest, a CJ could also.
Bad assumption. If I ever am tempted to "lube the system" again, it
certainly won't be with MMO air tool oil...and I'll be doggone sure I
thoroughly test the compatibility of anything I consider sticking in the
system.
Fly safely,
Buddy
Message 7
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| Subject: | YAK/CJ strut filling tool for sale |
Very nice setup=2C but keep in mind that SCUBA air has a dew point of about
-54C whereas "normal" dry nitrogen (as opposed to "ultra dry") nitrogen ha
s a dew point of -70C.
Which means that SCUBA air has TEN TIMES as much water vapor in it as nitro
gen. http://www.airgassgcatalog.com/catalog/tag148.pdf
SCUBA air also runs 21% oxygen.
As easy and cheap as it is to get nitrogen=2C putting compressed water vapo
r and oxygen in your struts probably rates as a poor second choice.
Jon
> Date: Wed=2C 2 May 2012 04:12:35 -0700
> From: samira.h@shaw.ca
> To: yak-list@matronics.com
> Subject: Yak-List: YAK/CJ strut filling tool for sale
>
> I have a custom made strut filling
> set-up for use on scuba bottles
> for sale (see attached pictures)=2C
> asking US$ 295 .
>
> Please contact me off list or visit
> me on ebay.
>
> cheers
>
> Elmar
>
Message 8
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| Subject: | Re: YAK/CJ strut filling tool for sale |
Hi again,
thank you very much for your input
but the CJ maintenance states one
can use dry compressed air as well.
Many Nanchang owners have a scuba
tank permanently installed and can
use that strut filler tool anywhere in
the field.
I also should have mentioned that most
off-the-shelf nitrogen cylinder regulators
go only up to 600psi while the CJ main gear
needs 700psi.
cheers
Elmar
Message 9
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
On Wed, May 2, 2012 at 7:51 AM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E <mark.bitterlich@navy.mil> wrote:
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> I had exactly the same results with the chevron seals in my YAK-50's
> landing gear actuators, which caused them to fall to pieces.
>
> Fortunately, the emergency gear blow down worked. This event was posted
> to the YAK-List about a decade ago. Since then, the idea of putting oil
> into the air system has once again grown in popularity.
>
As I recall, the Chinese maintenance docs recommend a mixture of glycerine
and alcohol as the lubricant-of-choice for the pneumatic system. Someone
here have the details?
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
Message 10
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| Subject: | Need Yak-52 Prebuy in Tulsa OK |
Hi Allen & Bob,
Thank you for your replies.
I spoke to Mike this morning. The inspection is being set up next week.
Best,
Robin
--- On Wed, 5/2/12, BPA <BPA@bpaengines.com> wrote:
> From: BPA <BPA@bpaengines.com>
> Subject: RE: Yak-List: Need Yak-52 Prebuy in Tulsa OK
> To: yak-list@matronics.com
> Date: Wednesday, May 2, 2012, 5:55 AM
> "BPA" <BPA@bpaengines.com>
>
> Contact Mike Hastings 918-809-8271. He may be able to do the
> pre-buy or
> will no someone who can.
>
> Allen Barrett
> BPE, Inc.
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com]
> On Behalf Of Robin Hou
> Sent: Tuesday, May 01, 2012 10:20 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Need Yak-52 Prebuy in Tulsa OK
>
>
> I am looking for a shop or A&P to do a prebuy inspection
> in Tulsa OK
> area. Any recommendation is greatly appreciated.
>
> Robin Hou
> rmhou@yahoo.com
> 626-298-2057
>
>
>
>
>
>
> Forum -
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
> -Matt
> Dralle, List Admin.
>
>
>
>
Message 11
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
About the check valve "pads":
I don't know who Elmar is referring to as selling "after market" check
valve rubber pads, but mine come from China. Elmar's post caused me to
start wondering if my inventory of pads were in fact any different than
those which are in a factory assembled check valve. This morning
I disassembled a factory new check valve and found that the rubber material
appears to be the same black material as the pads which I buy from my
vendor in China. I do not have the expertise to correctly analyze the
material to be 100% sure but the two examples do appear to be made of the
same material. The outside dia is the same on both, the thickness is a
bit more on the one which was removed from the factory new check valve, as
it mics about .080.
Best,
Doug
On Wed, May 2, 2012 at 6:42 AM, Elmar & Manuela Hegenauer
<samira.h@shaw.ca>wrote:
> samira.h@shaw.ca>
>
> Thank you very much for your informative
> posting and the pictures.
>
> The same happened to me on several
> occasions but with one difference, only
> the after market rubber pads got dissolved
> while the original seals are still intact.
>
> The CJ maintenance manual states very clearly
> that one should lubricate the pneumatic system
> by injection specific oil into the system on a regular
> schedule.
>
> If anybody offers the original rubber pads for
> the check valves, please contact me off list.
>
> cheers
>
> Elmar
>
>
Message 12
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
So do the Russians, and only in SMALL quantities.
From: "brian@lloyd.com" <brian@lloyd.com>
Subject: Re: Yak-List: Effects of air tool oil in a CJ pneumatic system
On Wed, May 2, 2012 at 7:51 AM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E <mark.bitterlich@navy.mil> wrote:
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> I had exactly the same results with the chevron seals in my YAK-50's
> landing gear actuators, which caused them to fall to pieces.
>
> Fortunately, the emergency gear blow down worked. This event was posted
> to the YAK-List about a decade ago. Since then, the idea of putting oil
> into the air system has once again grown in popularity.
As I recall, the Chinese maintenance docs recommend a mixture of glycerine
and alcohol as the lubricant-of-choice for the pneumatic system. Someone
here have the details?
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
Message 13
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
On page 27 of the CJ maintenance
manual it says:
Article 105: Oil the retraction cylinders and
unlocking cylinders of the landing gears and
flap.
Replenish 5-10 grams of castor oil or No. 8
aviation lubricating oil into each retraction
cylinder through the nipples of the cylinder
retraction and extension pipes and 3-5 grams
of castor oil or No. 8 aviation lubricating oil
into each of the lock hook cylinder through
its nipple.
A similar procedure is also mentioned in
several pages of other manuals for the
Nanchang, wer lesen kann ist klar im Vorteil :-)
That's it for me, I am out of this thread.
cheers
Elmar
Message 14
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| Subject: | Effects of air tool oil in a CJ pneumatic system |
They do (have a procedure for putting in glycerin and alcohol).
However, the subject at hand is injecting pneumatic air tool oil.
Something that people on this list have recommended on and off for
decades.
Glycerin/Alcohol
Pneumatic Air Tool Oil.
Two different topics.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Brian Lloyd
Sent: Wednesday, May 02, 2012 12:30 PM
Subject: Re: Yak-List: Effects of air tool oil in a CJ pneumatic system
On Wed, May 2, 2012 at 7:51 AM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E <mark.bitterlich@navy.mil> wrote:
Cherry Point, MALS-14 64E" <mark.bitterlich@navy.mil>
I had exactly the same results with the chevron seals in my
YAK-50's
landing gear actuators, which caused them to fall to pieces.
Fortunately, the emergency gear blow down worked. This event
was posted
to the YAK-List about a decade ago. Since then, the idea of
putting oil
into the air system has once again grown in popularity.
As I recall, the Chinese maintenance docs recommend a mixture of
glycerine and alcohol as the lubricant-of-choice for the pneumatic
system. Someone here have the details?
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
Message 15
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
No argument!
All of you own your own airplanes.
They are all Experimental.
Squirt any kind of oil you want to in the darn things.
But, I think it is less than bright to argue (if that is in fact what is
happening here) with someone who has taken a seal, dunked it into
Pneumatic Air Tool Oil and then watched it swell and start to come
apart.
But that's just me.
Mark
p.s. As a new YAK-50 owner back in 2000, I listened to people ON THIS
LIST telling me to put pneumatic air tool oil into the system. I did
exactly that. I have told everyone on this list that the chevron seals
then fell apart and I was lucky to get the gear down.
p.p.s. And since I have watched this discussion occur over and over
again in the last 12 years, let me please relate to anyone new here that
it ALWAYS comes down to the same thing. The subject goes from Pneumatic
Air Tool Oil, to Glycerin/Alcohol, and then to Caster Oil or #8
lubricating oil.
APPLES AND ORANGES FOLKS! APPLES AND ORANGES.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar &
Manuela Hegenauer
Sent: Wednesday, May 02, 2012 3:17 PM
Subject: Yak-List: Re: Effects of air tool oil in a CJ pneumatic system
<samira.h@shaw.ca>
On page 27 of the CJ maintenance
manual it says:
Article 105: Oil the retraction cylinders and
unlocking cylinders of the landing gears and
flap.
Replenish 5-10 grams of castor oil or No. 8
aviation lubricating oil into each retraction
cylinder through the nipples of the cylinder
retraction and extension pipes and 3-5 grams
of castor oil or No. 8 aviation lubricating oil
into each of the lock hook cylinder through
its nipple.
A similar procedure is also mentioned in
several pages of other manuals for the
Nanchang, wer lesen kann ist klar im Vorteil :-)
That's it for me, I am out of this thread.
cheers
Elmar
Message 16
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
*The Glycerin/Alcohol mixture is used for wet filtering of the oil and
water which makes it past the cartridge filters. It's not a lubricant.
The Yaks are greased system, not an oiled system.
Every 5 years or 500hrs the should be dis-assembled, cleaned, and regreased
with pnuematic system grease.
The Air tool oil trick has made the Yak shops a lot of money in actuator
and check valve rebuilds as it turns into green slimy goo.... after it
washes all of the grease out.
Just my $.02
Cliff
*
On Wed, May 2, 2012 at 3:51 PM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E <mark.bitterlich@navy.mil> wrote:
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> No argument!
>
> All of you own your own airplanes.
>
> They are all Experimental.
>
> Squirt any kind of oil you want to in the darn things.
>
> But, I think it is less than bright to argue (if that is in fact what is
> happening here) with someone who has taken a seal, dunked it into
> Pneumatic Air Tool Oil and then watched it swell and start to come
> apart.
>
> But that's just me.
>
> Mark
>
> p.s. As a new YAK-50 owner back in 2000, I listened to people ON THIS
> LIST telling me to put pneumatic air tool oil into the system. I did
> exactly that. I have told everyone on this list that the chevron seals
> then fell apart and I was lucky to get the gear down.
>
> p.p.s. And since I have watched this discussion occur over and over
> again in the last 12 years, let me please relate to anyone new here that
> it ALWAYS comes down to the same thing. The subject goes from Pneumatic
> Air Tool Oil, to Glycerin/Alcohol, and then to Caster Oil or #8
> lubricating oil.
>
> APPLES AND ORANGES FOLKS! APPLES AND ORANGES.
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Elmar &
> Manuela Hegenauer
> Sent: Wednesday, May 02, 2012 3:17 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Re: Effects of air tool oil in a CJ pneumatic system
>
> <samira.h@shaw.ca>
>
> On page 27 of the CJ maintenance
> manual it says:
>
> Article 105: Oil the retraction cylinders and
> unlocking cylinders of the landing gears and
> flap.
>
> Replenish 5-10 grams of castor oil or No. 8
> aviation lubricating oil into each retraction
> cylinder through the nipples of the cylinder
> retraction and extension pipes and 3-5 grams
> of castor oil or No. 8 aviation lubricating oil
> into each of the lock hook cylinder through
> its nipple.
>
> A similar procedure is also mentioned in
> several pages of other manuals for the
> Nanchang, wer lesen kann ist klar im Vorteil :-)
>
> That's it for me, I am out of this thread.
>
> cheers
>
> Elmar
>
>
--
Clifford Coy
Border Air Ltd.
629 Airport Rd.
Swanton, VT 05488
802-868-2822 TEL
802-868-4465 FAX
Skype: Cliff.Coy
Message 17
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
On Wed, May 2, 2012 at 12:36 PM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E <mark.bitterlich@navy.mil> wrote:
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> They do (have a procedure for putting in glycerin and alcohol).
>
> However, the subject at hand is injecting pneumatic air tool oil.
>
> Something that people on this list have recommended on and off for
> decades.
>
> Glycerin/Alcohol
>
> Pneumatic Air Tool Oil.
>
> Two different topics.
>
Uh, no. Here's how I read it:
"I lubricated my pneumatic system with air tool oil. It hosed up all my
check valves by rotting out the rubber."
<Natural follow on -- > "Here is the stuff we are supposed to be using as
recommended by the builders of the airplane -- glycerine and alcohol."
See? Obvious connection. And I bet there were several people on here who
didn't realize that glycerine and alcohol is the proper lube for the
pneumatic system. The thing I didn't remember was the ratio of glycerine to
alcohol and the proper quantity to be injected into the system. I was
hoping to jog someone's memory into providing the missing piece.
But I know that I have parroted the, "lube the pneumatic system with
air-tool oil," party line in the past. Bad on me. But I did remember that
there was an official alternative and thought I would remind people. Sorry.
It was a case of me stepping out of character and trying to be helpful.
I'll shut up now. ;-)
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
Message 18
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
On Wed, May 2, 2012 at 1:11 PM, Cliff Coy <cliff.coy@gmail.com> wrote:
> *The Glycerin/Alcohol mixture is used for wet filtering of the oil and
> water which makes it past the cartridge filters. It's not a lubricant.
>
> The Yaks are greased system, not an oiled system.
> Every 5 years or 500hrs the should be dis-assembled, cleaned, and
> regreased with pnuematic system grease.
>
> The Air tool oil trick has made the Yak shops a lot of money in actuator
> and check valve rebuilds as it turns into green slimy goo.... after it
> washes all of the grease out.
>
> Just my $.02
> *
Thank you Cliff. I stand corrected. The right answer is: RTFM.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
Message 19
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
Having nothing else to think about while cleaning up broken glass (a rock
thrown by my weed-wacker took out my sliding glass door ... to the tune of
$500), the following thoughts went through my head:
1. Well, it seem that Marvel air-tool oil attacks rubber seals.
2. Hmm, MATO looks and smells like MMO.
3. I wonder if MATO has the same components as MMO or is even the same
stuff as MMO?
4. If so, I wonder if MMO has the same effect on diaphragms and seals in
the oil and fuel system?
I don't know the answers to my two questions. But I do know that, as a
result of the discussion here and my ruminations, I am going to be a bit
more circumspect in my use of MMO in the future.
YMMV.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
Message 20
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
Brian,
At KFFZ, three of us have been using 1 part glycerine to 3 parts 95%
alcohol for the CJ pneumatic system.
Several times per year I also put a 2 ml of 100 weight gear oil into the
"air-in" side of my stainless steel main air and emergency air on-off
valves.
Warren Hill
N464TW
On May 2, 2012, at 3:47 PM, Brian Lloyd wrote:
>
>
> On Wed, May 2, 2012 at 12:36 PM, Bitterlich, Mark G CIV Det Cherry
Point, MALS-14 64E <mark.bitterlich@navy.mil> wrote:
Point, MALS-14 64E" <mark.bitterlich@navy.mil>
>
> They do (have a procedure for putting in glycerin and alcohol).
>
> However, the subject at hand is injecting pneumatic air tool oil.
>
> Something that people on this list have recommended on and off for
> decades.
>
> Glycerin/Alcohol
>
> Pneumatic Air Tool Oil.
>
> Two different topics.
>
> Uh, no. Here's how I read it:
>
> "I lubricated my pneumatic system with air tool oil. It hosed up all
my check valves by rotting out the rubber."
> <Natural follow on -- > "Here is the stuff we are supposed to be using
as recommended by the builders of the airplane -- glycerine and
alcohol."
>
> See? Obvious connection. And I bet there were several people on here
who didn't realize that glycerine and alcohol is the proper lube for the
pneumatic system. The thing I didn't remember was the ratio of glycerine
to alcohol and the proper quantity to be injected into the system. I was
hoping to jog someone's memory into providing the missing piece.
>
> But I know that I have parroted the, "lube the pneumatic system with
air-tool oil," party line in the past. Bad on me. But I did remember
that there was an official alternative and thought I would remind
people. Sorry. It was a case of me stepping out of character and trying
to be helpful. I'll shut up now. ;-)
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> brian@lloyd.com
> +1.767.617.1365 (Dominica)
> +1.916.877.5067 (USA)
>
>
>
>
Message 21
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| Subject: | Re: Effects of air tool oil in a CJ pneumatic system |
The Russians use a 50/50 (volume) mixture of pure glycerine (whatever that
is) and medicinal ethanol (as pure as you can get it).
During Soviet times, they ordered higher quantities than necessary, allowin
g
the mechanics to build up a secret stock of alcohol =8A
At least that's what a knowledgeable Russian told me =8A
Jan
From: "brian@lloyd.com" <brian@lloyd.com>
Subject: Re: Yak-List: Effects of air tool oil in a CJ pneumatic system
On Wed, May 2, 2012 at 12:36 PM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E <mark.bitterlich@navy.mil> wrote:
> MALS-14 64E" <mark.bitterlich@navy.mil>
>
> They do (have a procedure for putting in glycerin and alcohol).
>
> However, the subject at hand is injecting pneumatic air tool oil.
>
> Something that people on this list have recommended on and off for
> decades.
>
> Glycerin/Alcohol
>
> Pneumatic Air Tool Oil.
>
> Two different topics.
Uh, no. Here's how I read it:
"I lubricated my pneumatic system with air tool oil. It hosed up all my
check valves by rotting out the rubber."
<Natural follow on -- > "Here is the stuff we are supposed to be using as
recommended by the builders of the airplane -- glycerine and alcohol."
See? Obvious connection. And I bet there were several people on here who
didn't realize that glycerine and alcohol is the proper lube for the
pneumatic system. The thing I didn't remember was the ratio of glycerine to
alcohol and the proper quantity to be injected into the system. I was hopin
g
to jog someone's memory into providing the missing piece.
But I know that I have parroted the, "lube the pneumatic system with
air-tool oil," party line in the past. Bad on me. But I did remember that
there was an official alternative and thought I would remind people. Sorry.
It was a case of me stepping out of character and trying to be helpful. I'l
l
shut up now. ;-)
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian@lloyd.com
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
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