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Dumb oil line question

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greg.barnhard@gmail.com

Joined: 24 Jun 2016
Posts: 29

Posted: Tue Jul 19, 2016 6:22 pm Post subject: Dumb oil line question

Hello everyone,



Sorry if this is a dumb question. I'm a relatively new Yak 52W owner. I've been going through the maintenance manuals trying to figure it out but I can't seem to find it. What is the purpose of the smaller line that comes off the bottom center of the oil tank to the engine. Is that another return line? I know the line that comes off the aircraft left side about half way up to the screen down at the bottom aircraft right on the firewall then goes to the pump but for the life of me I can't figure out what the line out of the bottom center does. Unfortunately I am not near the plane to look at it and try to figure it out and was hoping someone much smarter than I OM this list could enlighten me. 



Thanks!

Greg

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dsavarese0812(at)bellsout
Guest

Posted: Wed Jul 20, 2016 9:08 am Post subject: Dumb oil line question

If you look closely, the line that appears to go to the bottom of the oil tank actually attaches to a fitting on the firewall. It's the line for the oil pressure. 

Dennis. 



Sent from my iPhone



 	  Quote: 	
		   On Jul 19, 2016, at 10:22 PM, "greg.barnhard(at)gmail.com" <greg.barnhard(at)gmail.com> wrote:

 

 

 

 Hello everyone,

 

 Sorry if this is a dumb question. I'm a relatively new Yak 52W owner. I've been going through the maintenance manuals trying to figure it out but I can't seem to find it. What is the purpose of the smaller line that comes off the bottom center of the oil tank to the engine. Is that another return line? I know the line that comes off the aircraft left side about half way up to the screen down at the bottom aircraft right on the firewall then goes to the pump but for the life of me I can't figure out what the line out of the bottom center does. Unfortunately I am not near the plane to look at it and try to figure it out and was hoping someone much smarter than I OM this list could enlighten me. 

 

 Thanks!

 Greg

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=458398#458398

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GeorgeCoy

Joined: 02 Dec 2010
Posts: 310

Posted: Wed Jul 20, 2016 9:15 am Post subject: Dumb oil line question

I think Dennis means is the line for the oil dilution



Sent from my iPhone



 	  Quote: 	
		   On Jul 20, 2016, at 1:07 PM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net> wrote:

 

 

 

 If you look closely, the line that appears to go to the bottom of the oil tank actually attaches to a fitting on the firewall. It's the line for the oil pressure. 

 Dennis. 

 

 Sent from my iPhone

 

> On Jul 19, 2016, at 10:22 PM, "greg.barnhard(at)gmail.com" <greg.barnhard(at)gmail.com> wrote:

> 

> 

> 

> Hello everyone,

> 

> Sorry if this is a dumb question. I'm a relatively new Yak 52W owner. I've been going through the maintenance manuals trying to figure it out but I can't seem to find it. What is the purpose of the smaller line that comes off the bottom center of the oil tank to the engine. Is that another return line? I know the line that comes off the aircraft left side about half way up to the screen down at the bottom aircraft right on the firewall then goes to the pump but for the life of me I can't figure out what the line out of the bottom center does. Unfortunately I am not near the plane to look at it and try to figure it out and was hoping someone much smarter than I OM this list could enlighten me. 

> 

> Thanks!

> Greg

> 

> 

> 

> 

> Read this topic online here:

> 

> http://forums.matronics.com/viewtopic.php?p=458398#458398

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greg.barnhard@gmail.com

Joined: 24 Jun 2016
Posts: 29

Posted: Wed Jul 20, 2016 10:10 am Post subject: Re: Dumb oil line question

Thanks gentlemen. I'll have to look more closely at it.



Greg

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dsavarese0812(at)bellsout
Guest

Posted: Wed Jul 20, 2016 12:37 pm Post subject: Dumb oil line question

Not really George.  I don't believe the TW has an oil dilution valve, does it?  The small flexible line that comes from the oil pump and goes under the oil tank and looks like it attaches to the oil tank.  But when you look closely, it passes the oil tank at fits to a male B-nut fitting on the firewall.  On the other side of the firewall are the two oil pressure senders.

Dennis



       From: George Coy <george.coy(at)gmail.com>

 To: yak-list(at)matronics.com 

 Sent: Wednesday, July 20, 2016 1:15 PM

 Subject: Re: Dumb oil line question

  

 

--> Yak-List message posted by: George Coy <george.coy(at)gmail.com (george.coy(at)gmail.com)>



I think Dennis means is the line for the oil dilution



Sent from my iPhone



 	  Quote: 	
		   On Jul 20, 2016, at 1:07 PM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:

 

 --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)>

 

 If you look closely, the line that appears to go to the bottom of the oil tank actually attaches to a fitting on the firewall. It's the line for the oil pressure. 

 Dennis. 

 

 Sent from my iPhone

 

> On Jul 19, 2016, at 10:22 PM, "greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)" <greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)> wrote:

> 

> --> Yak-List message posted by: "greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)" <greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)>

> 

> Hello everyone,

> 

> Sorry if this is a dumb question. I'm a relatively new Yak 52W owner. I've been going through the maintenance manuals trying to figure it out but I can't seem to find it. What is the purpose of the smaller line that comes off the bottom center of the oil tank to the engine. Is that another return line? I know the line that comes off the aircraft left side about half way up to the screen down at the bottom aircraft right on the firewall then goes to the pump but for the life of me I can't figure out what the line out of the bottom center does. Unfortunately I am not near the plane to look at it and try to figure it out and was hoping someone much smarter than I OM this list could enlighten me. 

> 

> Thanks!

> Greg

> 

> 

> 

> 

> Read this topic online here:

> 

> http://forums.matronics.com/viewtopic.php?p=458398#458398

 

 

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Viperdoc

Joined: 19 Apr 2014
Posts: 484
Location: 08A

Posted: Mon Jul 25, 2016 6:23 pm Post subject: Dumb oil line question

He does. The oil pressure line comes off the base of the oil pump and goes directly back to the sending unit on the center of the of the lower fire wall. 

Doc



Sent from my iPad



 	  Quote: 	
		   On Jul 20, 2016, at 12:15 PM, George Coy <george.coy(at)gmail.com> wrote:

 

 

 

 I think Dennis means is the line for the oil dilution

 

 Sent from my iPhone

 

> On Jul 20, 2016, at 1:07 PM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net> wrote:

> 

> 

> 

> If you look closely, the line that appears to go to the bottom of the oil tank actually attaches to a fitting on the firewall. It's the line for the oil pressure. 

> Dennis. 

> 

> Sent from my iPhone

> 

>> On Jul 19, 2016, at 10:22 PM, "greg.barnhard(at)gmail.com" <greg.barnhard(at)gmail.com> wrote:

>> 

>> 

>> 

>> Hello everyone,

>> 

>> Sorry if this is a dumb question. I'm a relatively new Yak 52W owner. I've been going through the maintenance manuals trying to figure it out but I can't seem to find it. What is the purpose of the smaller line that comes off the bottom center of the oil tank to the engine. Is that another return line? I know the line that comes off the aircraft left side about half way up to the screen down at the bottom aircraft right on the firewall then goes to the pump but for the life of me I can't figure out what the line out of the bottom center does. Unfortunately I am not near the plane to look at it and try to figure it out and was hoping someone much smarter than I OM this list could enlighten me. 

>> 

>> Thanks!

>> Greg

>> 

>> 

>> 

>> 

>> Read this topic online here:

>> 

>> http://forums.matronics.com/viewtopic.php?p=458398#458398

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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:

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_________________
Viperdoc

dsavarese0812(at)bellsout
Guest

Posted: Tue Jul 26, 2016 1:41 am Post subject: Dumb oil line question

Sorry guys.  I do not mean the oil dilution line which comes from the fuel pump and goes into the oil dilution valve which is, as Doc says, on the center of the lower fire wall.  The small, flexible line that goes directly under the oil tank and LOOKS like it attaches to the oil tank, actually attaches to a firewall fitting right under the oil tank.  The two oil pressure transducers are on the back side of the firewall where that small, flexible oil line attaches to the firewall.  That is the oil pressure line that comes FROM the oil pump which is what I believe Doc was referring to.  The fuel dilution valve passes fuel through it.  Not oil.   If one were to follow the output line from the oil dilution valve (look at the arrow on the oil dilution valve), yes it does go to the oil pump.  But is on the other side of the oil pump.  This is where fuel is pumped into the oil pump to dilute the oil.   Many people have disabled the fuel dilution toggle switch in the cockpit or simply don't use this function.

Dennis

       From: Roger Kemp <f16viperdoc(at)me.com>

 To: yak-list(at)matronics.com 

 Sent: Monday, July 25, 2016 10:22 PM

 Subject: Re: Dumb oil line question

--> Yak-List message posted by: Roger Kemp <f16viperdoc(at)me.com (f16viperdoc(at)me.com)>

He does. The oil pressure line comes off the base of the oil pump and goes directly back to the sending unit on the center of the of the lower fire wall. 

Doc

Sent from my iPad

 	  Quote: 	
		   On Jul 20, 2016, at 12:15 PM, George Coy <george.coy(at)gmail.com (george.coy(at)gmail.com)> wrote:

 --> Yak-List message posted by: George Coy <george.coy(at)gmail.com (george.coy(at)gmail.com)>

 I think Dennis means is the line for the oil dilution

 Sent from my iPhone

> On Jul 20, 2016, at 1:07 PM, A. Dennis Savarese <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)> wrote:

> 

> --> Yak-List message posted by: "A. Dennis Savarese" <dsavarese0812(at)bellsouth.net (dsavarese0812(at)bellsouth.net)>

> 

> If you look closely, the line that appears to go to the bottom of the oil tank actually attaches to a fitting on the firewall. It's the line for the oil pressure. 

> Dennis. 

> 

> Sent from my iPhone

> 

>> On Jul 19, 2016, at 10:22 PM, "greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)" <greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)> wrote:

>> 

>> --> Yak-List message posted by: "greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)" <greg.barnhard(at)gmail.com (greg.barnhard(at)gmail.com)>

>> 

>> Hello everyone,

>> 

>> Sorry if this is a dumb question. I'm a relatively new Yak 52W owner. I've been going through the maintenance manuals trying to figure it out but I can't seem to find it. What is the purpose of the smaller line that comes off the bottom center of the oil tank to the engine. Is that another return line? I know the line that comes off the aircraft left side about half way up to the screen down at the bottom aircraft right on the firewall then goes to the pump but for the life of me I can't figure out what the line out of the bottom center does. Unfortunately I am not near the plane to look at it and try to figure it out and was hoping someone much smarter than I OM this list could enlighten me. 

>> 

>> Thanks!

>> Greg

>> 

>> 

>> 

>> 

>> Read this topic online here:

>> 

>> http://forums.matronics.com/viewtopic.php?p=458398#458398

http:sp;  -->

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