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  #1  
Old 06-20-2022, 03:00 PM
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FORANE FORANE is offline
 
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Default 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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  #2  
Old 06-21-2022, 06:45 AM
TS Flightlines TS Flightlines is offline
 
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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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  #3  
Old 06-22-2022, 05:02 AM
RV6-KPTW RV6-KPTW is offline
 
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1 to 2 flats, not 1 to 2 rotations, yes?
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  #4  
Old 06-22-2022, 05:56 AM
TS Flightlines TS Flightlines is offline
 
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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
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  #5  
Old 06-22-2022, 08:49 AM
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Default 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?
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  #6  
Old 06-22-2022, 09:15 AM
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Quote:
Originally Posted by wirejock View Post
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.

Click image for larger version

Name:	Torque_Spec_Aluminum_Fittings.jpg
Views:	45
Size:	257.5 KB
ID:	27338
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  #7  
Old 06-22-2022, 10:06 AM
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Default Bulletin JA14A

Interesting. I see references all over the place to Bulletin JA14A but cannot locate the document.
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  #8  
Old 06-22-2022, 11:18 AM
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wirejock wirejock is offline
 
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Default AN Torque table

I found this table. Correct?
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Name:	techlibrary_torque_values.pdf
Views:	25
Size:	73.4 KB
ID:	27343  
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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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  #9  
Old 06-22-2022, 11:27 AM
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wirejock wirejock is offline
 
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Default Torque table

I found a table for AN fittings. Is this correct?
Click image for larger version

Name:	Screenshot (16).jpg
Views:	42
Size:	204.7 KB
ID:	27346
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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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