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  #1  
Old 09-30-2007, 08:22 PM
Geoff
 
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Default Oil suction screen - torque?

Does anyone have a torque value for the oil suction screen nut in the sump?

I'm guessing 300 in-lb like the vernatherm and the oil pressure relief valve, but I can't find a reference in the Lycoming overhaul manual.

Thanks.
-Geoff
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  #2  
Old 10-01-2007, 03:42 AM
hevansrv7a's Avatar
hevansrv7a hevansrv7a is offline
 
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Location: Detroit, MI
Posts: 1,587
Default Superior's answer

Superior's answer was not in torque values but in degrees past finger tight. Look it up in their manual if yours is a Superior.
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  #3  
Old 10-01-2007, 07:01 AM
Steve Steve is offline
 
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Location: Roy, Utah
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Default

The chart is in the Lyc OH manual (spec and torque values chapter). I'm not sure if it applies when using an old gasket. I can't remember what that type of gasket is called.

Steve
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  #4  
Old 10-01-2007, 09:45 AM
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az_gila az_gila is offline
 
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Location: 57AZ - NW Tucson area
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Exclamation By angle...

This is the chart that Steve refers to...
I am sure it is for new gaskets only... after all, a crush gasket is crushed during it's first (and only) use...
Note that there is also a correct orientation of the gasket.

Table 72-00-11.5 • Crush Type Gasket Tightening Angles

Description of Limit...........................Angle (approx.)
Oil Suction Screen Gasket ....................... 135º
Pressure Relief Valve Gasket.......................90º
Oil Cooler Bypass Plug Gasket....................135º

NOTE: Install Crush Gasket with seam toward aluminum case. Tighten thread until cap or valve body contacts gasket. Turn additional angle shown above. Lock wire in place.


gil A
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Last edited by az_gila : 10-01-2007 at 09:51 AM. Reason: spelling
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