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06-20-2022, 03:00 PM
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Join Date: Nov 2011
Location: East TN
Posts: 642
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Torque for oil cooler lines
Does anyone know the recommended torque for the 3/8 npt inlets to an oil cooler?
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Lancair 235/340
RV-9A (2013 - 2016)
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06-21-2022, 06:45 AM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 3,084
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Refer to the builders construction manual. Because some of the fittings have a specific 'clocking', an actual torque isnt achieveble. So, generally, snug then 1.5 to 2 turns more WITH THREAD SEALANT, being aware of any necessary clocking.
Tom
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7A Tail Kit Completed, Fuse started-Pay as I go Plan, on hold while we develop new products for RV builders
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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06-22-2022, 05:02 AM
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Join Date: Oct 2014
Location: Sebastian Fl X26
Posts: 207
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1 to 2 flats, not 1 to 2 rotations, yes?
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Dennis Callaghan (X26)
- RV14 sn:140193 - Awesome airplane!
- donation 11/27/2021 * 2
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06-22-2022, 05:56 AM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 3,084
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Dennis--1-2 flats is for AN nuts---the op was referring to NPT threaded fittings, so 1.5-2 Rotations after lightly snug.
Tom
__________________
Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7A Tail Kit Completed, Fuse started-Pay as I go Plan, on hold while we develop new products for RV builders
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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06-22-2022, 08:49 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,354
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Fitting torque
This comes up occasionally. Could someone put all the info into one thread and make it a sticky.
This thread is NPT fittings. Consensus seems to be 1.5-2 turns past lightly snug taking clocking into account.
Then there's flare fittings. Aluminum to aluminum, aluminum to steel, steel to aluminum, steel to steel, staninless to aluminum, stainless to steel, yada, yada. What are the torque values or is it flats? What radio station should be on? Rock, Country, Jazz, Blues? Seriously. One thread with some common sense postings or tables that are easy to understand would be greatly appreciated. Military Spec seem to enjoy confusion. Look at what they did to AN part numbers. 
Heck, I would be happy to compile something to a spreadsheet if I had the data. Tabs for each material maybe.
Common folks. Lets help each other. Isn't that why we do this crazy thing?
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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06-22-2022, 09:15 AM
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Join Date: Jul 2007
Location: Litchfield Park, AZ
Posts: 1,183
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Quote:
Originally Posted by wirejock
This comes up occasionally. Could someone put all the info into one thread and make it a sticky.
This thread is NPT fittings. Consensus seems to be 1.5-2 turns past lightly snug taking clocking into account.
Then there's flare fittings. Aluminum to aluminum, aluminum to steel, steel to aluminum, steel to steel, staninless to aluminum, stainless to steel, yada, yada. What are the torque values or is it flats? What radio station should be on? Rock, Country, Jazz, Blues? Seriously. One thread with some common sense postings or tables that are easy to understand would be greatly appreciated. Military Spec seem to enjoy confusion. Look at what they did to AN part numbers.
Heck, I would be happy to compile something to a spreadsheet if I had the data. Tabs for each material maybe.
Common folks. Lets help each other. Isn't that why we do this crazy thing? |
Van's gives the instructions for NPT installations as Wirejock describes above in Section 5. Specifically 5.27 Fluid Fittings.
https://www.vansaircraft.com/service...d-revisions/5/
For the flared aluminum fitting torque values or the alternative tightening method Van's links to Aeroquip's technical data shown below.
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Carlos in Arizona
EAA Chapter 538 www.chapters.eaa.org/eaa538
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (reserved & building)
Emp, Wings & Fuse done - working on FWF
"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill
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06-22-2022, 10:06 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,354
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Bulletin JA14A
Interesting. I see references all over the place to Bulletin JA14A but cannot locate the document.
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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06-22-2022, 11:18 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,354
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AN Torque table
I found this table. Correct?
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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06-22-2022, 11:27 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,354
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Torque table
I found a table for AN fittings. Is this correct?
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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