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gord(at)thedampub.ca
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 Posted: Sat Jun 01, 2013 6:05 pm Post subject: compressor problems |
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Looks like I need a compressor overhaul or replacement. The pressure is
not getting over 3. Does anyone have a compressor for sale or a kit to
overhaul.
Gord with Yak 50 SN 01
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Mozam
Joined: 24 Nov 2006
Posts: 85
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| Posted: Sun Jun 02, 2013 5:56 am Post subject: Re: compressor problems |
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I’ve seen this before on my plane several times. Your compressor may be just fine. Try tightening and re-safety wiring the banjo fitting that attaches the air line to the compressor. When the compressor reaches 3.0 ATM the fitting starts to leak the air out and it cannot build the pressure any higher.
I’d replace the crush washers while you’re at it just to make sure you fix the leak.
Also, this would be a good time to remove, disassemble, and clean all the carbon out of the valve on the compressor that the banjo fitting attaches to. If that valve carbons up enough the air cannot exit the compressor and pressures/temperatures in the compressor go sky high. There is a shear pin that is supposed to break if this happens to save your compressor.
However, I had a shear pin in mine made of (stainless steel ?), which failed to break so the pressure/temperature reached a point where the piston froze in the cylinder and ripped the compressor cylinder right off the compressor body. (It stripped all the nuts right off the studs.) I wonder how many others have a shear pin like mine…was I the only guy to have a bad one? Probably not!
Disassemble the valve and soak in odorless mineral spirits for a couple days to remove all the carbon…works great. It can be a pain to take apart, I use a vise and big wrench. Get some new crush washers (I think they are 10 and 18 mm I.D.) You can get them here cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
Try this before you remove the compressor. That is a real PITA!!!
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viperdoc(at)mindspring.co
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| Posted: Sun Jun 02, 2013 6:16 am Post subject: compressor problems |
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Mozam,
Thanks! I have been looking all over the place for a reasonable crush washer source. Did not even think about McMaster Carr!
Gord, he is right about the compressor check valve at the compressor. It needs to cleaned after about a hundred hours at the most.
I need to clone me so one can be my crew chief and I can FLY! Ah, the joys of owning a military aircraft!
Doc
Sent from my iPad
On Jun 2, 2013, at 8:56 AM, "Mozam" <sdalton(at)hughes.net> wrote:
| Quote: |
I’ve seen this before on my plane several times. Your compressor may be just fine. Try tightening and re-safety wiring the banjo fitting that attaches the air line to the compressor. When the compressor reaches 3.0 ATM the fitting starts to leak the air out and it cannot build the pressure any higher.
I’d replace the crush washers while you’re at it just to make sure you fix the leak.
Also, this would be a good time to remove, disassemble, and clean all the carbon out of the valve on the compressor that the banjo fitting attaches to. If that valve carbons up enough the air cannot exit the compressor and pressures/temperatures in the compressor go sky high. There is a shear pin that is supposed to break if this happens to save your compressor.
However, I had a shear pin in mine made of (stainless steel ?), which failed to break so the pressure/temperature reached a point where the piston froze in the cylinder and ripped the compressor cylinder right off the compressor body. (It stripped all the nuts right off the studs.) I wonder how many others have a shear pin like mine…was I the only guy to have a bad one? Probably not!
Disassemble the valve and soak in odorless mineral spirits for a couple days to remove all the carbon…works great. It can be a pain to take apart, I use a vise and big wrench. Get some new crush washers (I think they are 10 and 18 mm I.D.) You can get them here cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
Try this before you remove the compressor. That is a real PITA!!!
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=401810#401810
|
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jackpot
Joined: 13 Jul 2010
Posts: 65
Location: Las Vegas, Nevada
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| Posted: Sun Jun 02, 2013 6:28 am Post subject: compressor problems |
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Try Harbor Freight. They have plastic assortment boxes of copper crush washers. Gary. CJ. N22YK
Sent from my iPhone
On Jun 2, 2013, at 7:14, "Roger Kemp M.D." <viperdoc(at)mindspring.com> wrote:
| Quote: |
Mozam,
Thanks! I have been looking all over the place for a reasonable crush washer source. Did not even think about McMaster Carr!
Gord, he is right about the compressor check valve at the compressor. It needs to cleaned after about a hundred hours at the most.
I need to clone me so one can be my crew chief and I can FLY! Ah, the joys of owning a military aircraft!
Doc
Sent from my iPad
On Jun 2, 2013, at 8:56 AM, "Mozam" <sdalton(at)hughes.net> wrote:
>
>
> I’ve seen this before on my plane several times. Your compressor may be just fine. Try tightening and re-safety wiring the banjo fitting that attaches the air line to the compressor. When the compressor reaches 3.0 ATM the fitting starts to leak the air out and it cannot build the pressure any higher.
>
> I’d replace the crush washers while you’re at it just to make sure you fix the leak.
>
> Also, this would be a good time to remove, disassemble, and clean all the carbon out of the valve on the compressor that the banjo fitting attaches to. If that valve carbons up enough the air cannot exit the compressor and pressures/temperatures in the compressor go sky high. There is a shear pin that is supposed to break if this happens to save your compressor.
>
> However, I had a shear pin in mine made of (stainless steel ?), which failed to break so the pressure/temperature reached a point where the piston froze in the cylinder and ripped the compressor cylinder right off the compressor body. (It stripped all the nuts right off the studs.) I wonder how many others have a shear pin like mine…was I the only guy to have a bad one? Probably not!
>
> Disassemble the valve and soak in odorless mineral spirits for a couple days to remove all the carbon…works great. It can be a pain to take apart, I use a vise and big wrench. Get some new crush washers (I think they are 10 and 18 mm I.D.) You can get them here cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
>
> Try this before you remove the compressor. That is a real PITA!!!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401810#401810
|
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bwade154(at)yahoo.com
Guest
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| Posted: Sun Jun 02, 2013 8:44 am Post subject: compressor problems |
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I just ordered some Alu washer's from summit. The lower part of the shaft that goes through the Banjo alows the 10mm washer to move around quite a bit, the disigners should have put a sholder on the nut to hold the waser in place.
Seller: summitracing_sales ( 501612  )
Item title PriceShipping price
QtyItem total Fragola 999218 Crush Washers 18mm Aluminum Set of 10 ( item: [url=http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D111074136794%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160] 111074136794[/url] transaction: [url=http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary] 1033399548001[/url] )  Paid on May-29-13 $5.95 Free 1 $5.95 Expedited Shipping Estimated delivery: Mon. Jun. 3 Fragola 999214 Crush Washers 14mm Aluminum Set of 10 ( item: [url=http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330919352626%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160] 330919352626[/url] transaction: [url=http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary] 830513793014[/url] )  Paid on May-29-13 $4.95 $4.95 1 $4.95 Expedited Shipping Estimated delivery: Mon. Jun. 3 Fragola 999210 Crush Washers 10mm Aluminum Set of 10 ( item: [url=http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330924872307%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160] 330924872307[/url] transaction: [url=http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary] 830513794014[/url] )  Paid on May-29-13 $3.95 -- 2 $7.90 Shipped with item above Estimated delivery: Mon. Jun. 3
Subtotal $18.80 Shipping and handling $4.95 Shipping Discount from seller summitracing_sales $14.85 Total $23.75
From: Gary Gabbard <ggg6(at)att.net>
To: "yak-list(at)matronics.com" <yak-list(at)matronics.com>
Sent: Sunday, June 2, 2013 10:26 AM
Subject: Re: Re: compressor problems
--> Yak-List message posted by: Gary Gabbard <ggg6(at)att.net (ggg6(at)att.net)>
Try Harbor Freight. They have plastic assortment boxes of copper crush washers. Gary. CJ. N22YK
Sent from my iPhone
On Jun 2, 2013, at 7:14, "Roger Kemp M.D." <viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)> wrote:
| Quote: | --> Yak-List message posted by: "Roger Kemp M.D." <viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)>
Mozam,
Thanks! I have been looking all over the place for a reasonable crush washer source. Did not even think about McMaster Carr!
Gord, he is right about the compressor check valve at the compressor. It needs to cleaned after about a hundred hours at the most.
I need to clone me so one can be my crew chief and I can FLY! Ah, the joys of owning a military aircraft!
Doc
Sent from my iPad
On Jun 2, 2013, at 8:56 AM, "Mozam" <sdalton(at)hughes.net (sdalton(at)hughes.net)> wrote:
> --> Yak-List message posted by: "Mozam" <sdalton(at)hughes.net (sdalton(at)hughes.net)>
>
> I’ve seen this before on my plane several times. Your compressor may be just fine. Try tightening and re-safety wiring the banjo fitting that attaches the air line to the compressor. When the compressor reaches 3.0 ATM the fitting starts to leak the air out and it cannot build the pressure any higher.
>
> I’d replace the crush washers while you’re at it just to make sure you fix the leak.
>
> Also, this would be a good time to remove, disassemble, and clean all the carbon out of the valve on the compressor that the banjo fitting attaches to. If that valve carbons up enough the air cannot exit the compressor and pressures/temperatures in the compressor go sky high. There is a shear pin that is supposed to break if this happens to save your compressor.
>
> However, I had a shear pin in mine made of (stainless steel ?), which failed to break so the pressure/temperature reached a point where the piston froze in the cylinder and ripped the compressor cylinder right off the compressor body. (It stripped all the nuts right off the studs.) I wonder how many others have a shear pin like mine…was I the only guy to have a bad one? Probably not!
>
> Disassemble the valve and soak in odorless mineral spirits for a couple days to remove all the carbon…works great. It can be a pain to take apart, I use a vise and big wrench. Get some new crush washers (I think they are 10 and 18 mm I.D.) You can get them here cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
>
> Try this before you remove the compressor. That is a real PITA!!!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401810#401810
"http://forums.matronics.com/" target="_blank">http://forums.matronics.cohank you for your generous nbsp; -Matt Dralle, List Admin. var __chd__ = {"aid": 10345, "chaid": "freecause"};(function() { var c = document.createElement('script'); c.type = 'text/javascript'; c.async = true;c.src = ('https:' == document.location.protocol ? 'https://z': 'http://p') + '.chango.com/static/c.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(c, s);})();
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viperdoc(at)mindspring.co
Guest
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| Posted: Sun Jun 02, 2013 8:49 am Post subject: compressor problems |
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Will do. They are a couple miles from my house! A maintainers Red Neck Disney Land!
Doc
Sent from my iPad
On Jun 2, 2013, at 9:26 AM, Gary Gabbard <ggg6(at)att.net> wrote:
| Quote: |
Try Harbor Freight. They have plastic assortment boxes of copper crush washers. Gary. CJ. N22YK
Sent from my iPhone
On Jun 2, 2013, at 7:14, "Roger Kemp M.D." <viperdoc(at)mindspring.com> wrote:
>
>
> Mozam,
> Thanks! I have been looking all over the place for a reasonable crush washer source. Did not even think about McMaster Carr!
> Gord, he is right about the compressor check valve at the compressor. It needs to cleaned after about a hundred hours at the most.
> I need to clone me so one can be my crew chief and I can FLY! Ah, the joys of owning a military aircraft!
> Doc
>
> Sent from my iPad
>
> On Jun 2, 2013, at 8:56 AM, "Mozam" <sdalton(at)hughes.net> wrote:
>
>>
>>
>> I’ve seen this before on my plane several times. Your compressor may be just fine. Try tightening and re-safety wiring the banjo fitting that attaches the air line to the compressor. When the compressor reaches 3.0 ATM the fitting starts to leak the air out and it cannot build the pressure any higher.
>>
>> I’d replace the crush washers while you’re at it just to make sure you fix the leak.
>>
>> Also, this would be a good time to remove, disassemble, and clean all the carbon out of the valve on the compressor that the banjo fitting attaches to. If that valve carbons up enough the air cannot exit the compressor and pressures/temperatures in the compressor go sky high. There is a shear pin that is supposed to break if this happens to save your compressor.
>>
>> However, I had a shear pin in mine made of (stainless steel ?), which failed to break so the pressure/temperature reached a point where the piston froze in the cylinder and ripped the compressor cylinder right off the compressor body. (It stripped all the nuts right off the studs.) I wonder how many others have a shear pin like mine…was I the only guy to have a bad one? Probably not!
>>
>> Disassemble the valve and soak in odorless mineral spirits for a couple days to remove all the carbon…works great. It can be a pain to take apart, I use a vise and big wrench. Get some new crush washers (I think they are 10 and 18 mm I.D.) You can get them here cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
>>
>> Try this before you remove the compressor. That is a real PITA!!!
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=401810#401810
|
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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viperdoc(at)mindspring.co
Guest
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| Posted: Sun Jun 02, 2013 9:03 am Post subject: compressor problems |
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Absolutely! Happens on the banjo fittings on the fuel pump also!
Doc
Sent from my iPad
On Jun 2, 2013, at 11:42 AM, bill wade <bwade154(at)yahoo.com (bwade154(at)yahoo.com)> wrote:
[quote]I just ordered some Alu washer's from summit. The lower part of the shaft that goes through the Banjo alows the 10mm washer to move around quite a bit, the disigners should have put a sholder on the nut to hold the waser in place.
Seller: summitracing_sales ( 501612 )
Item title PriceShipping price
QtyItem total Fragola 999218 Crush Washers 18mm Aluminum Set of 10 ( item: [url=http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D111074136794%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160] 111074136794[/url] transaction: [url=http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary] 1033399548001[/url] ) Paid on May-29-13 $5.95 Free 1 $5.95 Expedited Shipping Estimated delivery: Mon. Jun. 3 Fragola 999214 Crush Washers 14mm Aluminum Set of 10 ( item: [url=http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330919352626%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160] 330919352626[/url] transaction: [url=http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary] 830513793014[/url] ) Paid on May-29-13 $4.95 $4.95 1 $4.95 Expedited Shipping Estimated delivery: Mon. Jun. 3 Fragola 999210 Crush Washers 10mm Aluminum Set of 10 ( item: [url=http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330924872307%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160] 330924872307[/url] transaction: [url=http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary] 830513794014[/url] ) Paid on May-29-13 $3.95 -- 2 $7.90 Shipped with item above Estimated delivery: Mon. Jun. 3
Subtotal $18.80 Shipping and handling $4.95 Shipping Discount from seller summitracing_sales $14.85 Total $23.75
From: Gary Gabbard <ggg6(at)att.net (ggg6(at)att.net)>
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Sent: Sunday, June 2, 2013 10:26 AM
Subject: Re: Re: compressor problems
--> Yak-List message posted by: Gary Gabbard <ggg6(at)att.net (ggg6(at)att.net)>
Try Harbor Freight. They have plastic assortment boxes of copper crush washers. Gary. CJ. N22YK
Sent from my iPhone
On Jun 2, 2013, at 7:14, "Roger Kemp M.D." <viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)> wrote:
| Quote: | --> Yak-List message posted by: "Roger Kemp M.D." <viperdoc(at)mindspring.com (viperdoc(at)mindspring.com)>
Mozam,
Thanks! I have been looking all over the place for a reasonable crush washer source. Did not even think about McMaster Carr!
Gord, he is right about the compressor check valve at the compressor. It needs to cleaned after about a hundred hours at the most.
I need to clone me so one can be my crew chief and I can FLY! Ah, the joys of owning a military aircraft!
Doc
Sent from my iPad
On Jun 2, 2013, at 8:56 AM, "Mozam" <sdalton(at)hughes.net (sdalton(at)hughes.net)> wrote:
> --> Yak-List message posted by: "Mozam" <sdalton(at)hughes.net (sdalton(at)hughes.net)>
>
> I’ve seen this before on my plane several times. Your compressor may be just fine. Try tightening and re-safety wiring the banjo fitting that attaches the air line to the compressor. When the compressor reaches 3.0 ATM the fitting starts to leak the air out and it cannot build the pressure any higher.
>
> I’d replace the crush washers while you’re at it just to make sure you fix the leak.
>
> Also, this would be a good time to remove, disassemble, and clean all the carbon out of the valve on the compressor that the banjo fitting attaches to. If that valve carbons up enough the air cannot exit the compressor and pressures/temperatures in the compressor go sky high. There is a shear pin that is supposed to break if this happens to save your compressor.
>
> However, I had a shear pin in mine made of (stainless steel ?), which failed to break so the pressure/temperature reached a point where the piston froze in the cylinder and ripped the compressor cylinder right off the compressor body. (It stripped all the nuts right off the studs.) I wonder how many others have a shear pin like mine…was I the only guy to have a bad one? Probably not!
>
> Disassemble the valve and soak in odorless mineral spirits for a couple days to remove all the carbon…works great. It can be a pain to take apart, I use a vise and big wrench. Get some new crush washers (I think they are 10 and 18 mm I.D.) You can get them here cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
>
> Try this before you remove the compressor. That is a real PITA!!!
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=401810#401810
"http://forums.matronics.com/" target="_blank">http://forums.matronics.cohank you for your generous nbsp; -Matt Dralle, List Admin. var __chd__ = {"aid": 10345, "chaid": "freecause"};(function() { var c = document.createElement('script'); c.type = 'text/javascript'; c.async = true;c.src = ('https:' == document.location.protocol ? 'https://z': 'http://p') + '.chango.com/static/c.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(c, s);})();
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tigeryak18t
Joined: 26 Sep 2009
Posts: 233
Location: PARIS FRANCE
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| Posted: Sun Jun 02, 2013 9:04 am Post subject: compressor problems |
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|
I would not replace it
Just clean everything and tight all connections
If necessary open the compressor and try first make a small overhaul yourself
Didier Blouzard
+33 6 5184 4802
Le 2 juin 2013 à 04:02, Gord <gord(at)thedampub.ca> a écrit :
| Quote: |
Looks like I need a compressor overhaul or replacement. The pressure is not getting over 3. Does anyone have a compressor for sale or a kit to overhaul.
Gord with Yak 50 SN 01
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Dawg
Joined: 19 May 2013
Posts: 355
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| Posted: Sun Jun 02, 2013 10:30 am Post subject: compressor problems |
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A great mechanic in Colorado overhauls them. If interested,
Contact me off line.
L129bs(at)gmail.com
Bill
On Jun 2, 2013, at 12:02 PM, Didier BLOUZARD <didier.blouzard(at)gmail.com> wrote:
| Quote: |
I would not replace it
Just clean everything and tight all connections
If necessary open the compressor and try first make a small overhaul yourself
Didier Blouzard
+33 6 5184 4802
Le 2 juin 2013 à 04:02, Gord <gord(at)thedampub.ca> a écrit :
>
>
> Looks like I need a compressor overhaul or replacement. The pressure is not getting over 3. Does anyone have a compressor for sale or a kit to overhaul.
> Gord with Yak 50 SN 01
>
>
>
>
>
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dsavarese0812(at)bellsout
Guest
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| Posted: Mon Jun 03, 2013 4:57 am Post subject: compressor problems |
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Also on the banjo fitting on top of the fine fuel filter as well.
Although this banjo fitting VERY rarely ever leaks unless someone has
recently replaced the hoses.
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 6/2/2013 12:01 PM, Roger Kemp M.D. wrote:
| Quote: | Absolutely! Happens on the banjo fittings on the fuel pump also!
Doc
Sent from my iPad
On Jun 2, 2013, at 11:42 AM, bill wade <bwade154(at)yahoo.com
<mailto:bwade154(at)yahoo.com>> wrote:
> I just ordered some Alu washer's from summit. The lower part of the
> shaft that goes through the Banjo alows the 10mm washer to move
> around quite a bit, the disigners should have put a sholder on the
> nut to hold the waser in place.
> *Seller: **summitracing_sales*
> <http://rover.ebay.com/rover/0/e11400.m1842.l1181/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmyworld.ebay.com%2Fsummitracing_sales%3FssPageName%3DADME%3AL%3AOC%3AUS%3A1181>*(
> **501612*
> <http://rover.ebay.com/rover/0/e11400.m1842.l1183/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Ffeedback.ebay.com%2Fws%2FeBayISAPI.dll%3FViewFeedback%26userid%3Dsummitracing_sales%26ssPageName%3DADME%3AL%3AOC%3AUS%3A1183>*)
> *
> **
> *Item title *
> *Price*
>
> *Shipping price*
>
> *Qty*
> *Item total*
>
> Fragola 999218 Crush Washers 18mm Aluminum Set of 10
> <http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D111074136794%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160>
> ( item: 111074136794
> <http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D111074136794%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160>
> transaction: 1033399548001
> <http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary>
> )
> <http://rover.ebay.com/rover/0/e11400.m1842.l1120/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D111074136794%26ssPageName%3DADME%3AL%3AOC%3AUS%3A1120>
>
> Paid on May-29-13
> $5.95
> Free
> 1
> $5.95
> Expedited Shipping
> Estimated delivery: Mon. Jun. 3
> Fragola 999214 Crush Washers 14mm Aluminum Set of 10
> <http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330919352626%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160>
> ( item: 330919352626
> <http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330919352626%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160>
> transaction: 830513793014
> <http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary>
> )
> <http://rover.ebay.com/rover/0/e11400.m1842.l1120/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330919352626%26ssPageName%3DADME%3AL%3AOC%3AUS%3A1120>
>
> Paid on May-29-13
> $4.95
> $4.95
> 1
> $4.95
> Expedited Shipping
> Estimated delivery: Mon. Jun. 3
> Fragola 999210 Crush Washers 10mm Aluminum Set of 10
> <http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330924872307%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160>
> ( item: 330924872307
> <http://rover.ebay.com/rover/0/e11400.m1842.l3160/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330924872307%26ssPageName%3DADME%3AL%3AOC%3AUS%3A3160>
> transaction: 830513794014
> <http://rover.ebay.com/rover/0/e11400.m1838.l1121/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fmy.ebay.com%2Fws%2FeBayISAPI.dll%3FMyEbayBeta%26CurrentPage%3DMyeBayNextSummary>
> )
> <http://rover.ebay.com/rover/0/e11400.m1842.l1120/7?euid=d0bd161b1ba54dc78dd1bb50cd737151&loc=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2Fws%2FeBayISAPI.dll%3FViewItem%26item%3D330924872307%26ssPageName%3DADME%3AL%3AOC%3AUS%3A1120>
>
> Paid on May-29-13
> $3.95
> --
> 2
> $7.90
> Shipped with item above
> Estimated delivery: Mon. Jun. 3
>
>
> Subtotal $18.80
>
> Shipping and handling $4.95
>
>
>
>
>
> Shipping Discount from seller summitracing_sales $14.85
>
>
>
>
>
> Total $23.75
> *From:* Gary Gabbard <ggg6(at)att.net <mailto:ggg6(at)att.net>>
> *To:* "yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>"
> <yak-list(at)matronics.com <mailto:yak-list(at)matronics.com>>
> *Sent:* Sunday, June 2, 2013 10:26 AM
> *Subject:* Re: Re: compressor problems
>
>
> <mailto:ggg6(at)att.net>>
>
> Try Harbor Freight. They have plastic assortment boxes of copper
> crush washers. Gary. CJ. N22YK
>
> Sent from my iPhone
>
> On Jun 2, 2013, at 7:14, "Roger Kemp M.D." <viperdoc(at)mindspring.com
> <mailto:viperdoc(at)mindspring.com>> wrote:
>
> >
> <viperdoc(at)mindspring.com <mailto:viperdoc(at)mindspring.com>>
> >
> > Mozam,
> > Thanks! I have been looking all over the place for a reasonable
> crush washer source. Did not even think about McMaster Carr!
> > Gord, he is right about the compressor check valve at the
> compressor. It needs to cleaned after about a hundred hours at the most.
> > I need to clone me so one can be my crew chief and I can FLY! Ah,
> the joys of owning a military aircraft!
> > Doc
> >
> > Sent from my iPad
> >
> > On Jun 2, 2013, at 8:56 AM, "Mozam" <sdalton(at)hughes.net
> <mailto:sdalton(at)hughes.net>> wrote:
> >
> >>
> <mailto:sdalton(at)hughes.net>>
> >>
> >> I’ve seen this before on my plane several times. Your compressor
> may be just fine. Try tightening and re-safety wiring the banjo
> fitting that attaches the air line to the compressor. When the
> compressor reaches 3.0 ATM the fitting starts to leak the air out and
> it cannot build the pressure any higher.
> >>
> >> I’d replace the crush washers while you’re at it just to make sure
> you fix the leak.
> >>
> >> Also, this would be a good time to remove, disassemble, and clean
> all the carbon out of the valve on the compressor that the banjo
> fitting attaches to. If that valve carbons up enough the air cannot
> exit the compressor and pressures/temperatures in the compressor go
> sky high. There is a shear pin that is supposed to break if this
> happens to save your compressor.
> >>
> >> However, I had a shear pin in mine made of (stainless steel ?),
> which failed to break so the pressure/temperature reached a point
> where the piston froze in the cylinder and ripped the compressor
> cylinder right off the compressor body. (It stripped all the nuts
> right off the studs.) I wonder how many others have a shear pin like
> mine…was I the only guy to have a bad one? Probably not!
> >>
> >> Disassemble the valve and soak in odorless mineral spirits for a
> couple days to remove all the carbon…works great. It can be a pain to
> take apart, I use a vise and big wrench. Get some new crush washers
> (I think they are 10 and 18 mm I.D.) You can get them here
> cheap…http://www.mcmaster.com/#standard-crush-washers/=n0n313
> >>
> >> Try this before you remove the compressor. That is a real PITA!!!
> >>
> >>
> >>
> >>
> >> Read this topic online here:
> >>
> >> http://forums.matronics.com/viewtopic.php?p=401810#401810
> >
> >
> >
> > "http://forums.matronics.com/"
> target="_blank">http://forums.matronics.cohank you for your generous
> nbsp; -Matt Dralle, List Admin.
>
>
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gord(at)thedampub.ca
Guest
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| Posted: Mon Jun 03, 2013 5:17 am Post subject: compressor problems |
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Thank you all for the responses to my request for help on the compressor. I
have time to explain a little more now. As it always happens, the problem
was undetected until I was ready to start for the Air Show in Waterloo
Ontario on Satueday. http://www.waterlooairshow.com/performers/in-the-air .
Sunday was fine with lots of nitrogen from the bottle.
Fortunately I allowed an extra 5 min just in case. There was a bit of panic
when I hit the start button and ... NADA. The pressure was down to about 25.
(never let that happen again). After some frantic attempts, pulling the prop
through etc I finally just held the button in and it flipped over 1 blade,
stopped and flipped one more blade and caught. Thank goodness.
The compressor has not been putting out much more that 35 for the last 10
hours or so. Now it is not putting out anything. There is no residual
pressure from the snot valve after the flight. The airplane is back in the
hangar and I will have a go at it tomorrow.
Aside from that little problem the airplane is really performing well and
the air show crowds seem to enjoy it. It really is a fabulous Air Show
machine. Thanks again for the help ........ Gord Price 519 795 7080
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dougsappllc(at)gmail.com
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| Posted: Mon Jun 03, 2013 6:09 am Post subject: compressor problems |
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Gord,Before spending a grand on a new compressor, check the following:
Take a rubber glove and stretch it over the top of the compressor and rotate the prop 8 to 10 blades to see if it sucks down on the filter. if yes you problem is most likely not in the compressor. Check for leaks down stream, a stuck poppet valve or a broken spring.
Remove the filter and screens and watch the little nut in the middle as you rotate the engine, is it moving? if not then you may have a sheared pin, again your compressor is OK, just replace the pin. Not a fun job.
I don't have the shear pins in stock, but I think Jill at M14P or Geo Coy might.
Call if I can be of help 509-826-4610.
Best,
Doug Sapp
On Sat, Jun 1, 2013 at 7:02 PM, Gord <gord(at)thedampub.ca (gord(at)thedampub.ca)> wrote:
[quote] --> Yak-List message posted by: Gord <gord(at)thedampub.ca (gord(at)thedampub.ca)>
Looks like I need a compressor overhaul or replacement. The pressure is not getting over 3. Does anyone have a compressor for sale or a kit to overhaul.
Gord with Yak 50 SN 01
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mark.bitterlich(at)navy.m
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| Posted: Mon Jun 03, 2013 6:39 am Post subject: compressor problems |
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Gord,
Just a few comments.
1. DARN GOOD ADVICE from Doug Sapp !!! By the way Doug, I never heard
of that particular trick before or maybe I did... Dennis? Anyway, I'll
remember that one for sure!
2. Gord, during the 13 years I have owned my YAK-50, I have had
situations where the pressure gage did not pump up, or remain up, or
whatever else, a whole BUNCH of times! Hundreds of hours and hundreds
of flights. The engine compressor has never been replaced during that
entire time. It has *ALWAYS* turned out to be a leak of some kind.
One good hint you gave in another message was that there was little to
no air in the snot valve.
Compressor could be bad as Doug detailed.
But ....
Also the banjo fitting, which I believe has already been mentioned.
Next, the rigid line that goes from the compressor banjo fitting TO the
snot valve. I have seen a bunch of them crack and then leak. Happens
ALL the time. I replaced mine with a flexible steel braided hose off a
Sukhoi.
Cracked flare in any of the lines.
By the way, if you happen to be incorrect about the snot valve and the
amount of air that is released when you check it, the possibilities
expand to a LARGE number of additional possibilities.
Bottom line, a leak of some kind.
Yes, it could be a compressor, but it sure would not be something I
would jump on first.
Mark
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