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  #1  
Old 10-08-2012, 07:08 AM
tomcostanza tomcostanza is offline
 
Join Date: Jul 2005
Posts: 293
Default Torque steel bolt into aluminum casting

Hi,

I'm mounting the prop governor with an AN5 bolt into aluminum threads. Does anyone have info on torque specs?

Thanks,
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Tom Costanza
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  #2  
Old 10-08-2012, 08:29 AM
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rzbill rzbill is offline
 
Join Date: Nov 2005
Location: Asheville, NC
Posts: 1,667
Default

Check your thread pitch before you do that. There is also a Lycoming document that covers it. Unfortunately, it is not at hand. Maybe somebody else can provide a link for you.
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Bill Pendergrass
RV-7A: Flying since April 15, 2012
YIO-360-M1B, mags, CS, GRT H1s & A/P, Navworx
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Last edited by rzbill : 10-08-2012 at 08:32 AM.
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  #3  
Old 10-08-2012, 11:07 AM
868RM 868RM is offline
 
Join Date: Oct 2009
Location: lena, il.
Posts: 152
Default bolts

Tom, I am pretty sure those bolts are course thread. Also check lyc. service instruction 1438a (plate lw-12347 & two 72053 gaskets) to see if it applies to your applications. It applies to my engine as I am adding it now to fix an oil leak @ 51 hours. Ron
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