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sarg314(at)gmail.com
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 Posted: Wed Oct 14, 2009 10:17 pm Post subject: Lycoming fuel pump |
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Can some one refresh my memory about the 3rd fitting on my fuel pump. It's for some sort of overflow as I recall. How is this usually handled?
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Tom Sargent
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jim jewell
Joined: 09 Jan 2006
Posts: 82
Location: Kelowna B.C. Canada
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| Posted: Thu Oct 15, 2009 12:27 am Post subject: Lycoming fuel pump |
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Hi Tom
The third fitting is meant to be an overflow outlet.
Should the pump fail and begin leaking internally the leaking fuel should exit the pump through the required fitting and its attached hose instead of leaking into the crank case. The vent exit hose/tube should be mounted on the bottom of the firewall well outboard of the exhaust outlet area. It should exit the fuel out into the slipstream.
Jim in Kelowna
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rice737(at)msn.com
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| Posted: Thu Oct 15, 2009 7:10 am Post subject: Lycoming fuel pump |
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Hey Tom C
If I understand what you are talking about C it is just and vent/overflow line that needs to be ducted back to the firewall and then out the bottom of the aircraft with a small diameter tube. Keep it away from the exhaust pipes. It should be on your plans. I think it is there to vent fuel overboard if the diaphragms in the pump fail.
Paul
RV8
Flying Siren
Date: Wed C 14 Oct 2009 23:13:45 -0700
Subject: Lycoming fuel pump
From: sarg314(at)gmail.com
To: rv-list(at)matronics.com
Can some one refresh my memory about the 3rd fitting on my fuel pump. It's for some sort of overflow as I recall. How is this usually handled?
--
Tom Sargent
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p://www.matronics.com/Navigator?RV-List
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