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Rotax 914 EGT Probe Installation Torque

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Horizonspace(at)aol.com
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Posted: Thu May 01, 2008 4:54 pm Post subject: Rotax 914 EGT Probe Installation Torque

I am installing Westach 712-4D6K bayonet style probes and would like to  know the proper torque value for these 8mm bushings.  Does anyone know of  any reference where I can find this value?



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rampil

Joined: 04 May 2007
Posts: 870

Posted: Fri May 02, 2008 12:52 pm Post subject: Re: Rotax 914 EGT Probe Installation Torque

Tight enough to stop the hot gas leaking, not so much as to tear

your weld off! Remember the bung is welded to very thin stainless

which isn't the strongest of metal even when its thick.



I'd also suggest some copper-based antiseize on the threads

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_________________
Ira N224XS

ptag.dev(at)tiscali.co.uk
Guest

Posted: Sat May 03, 2008 12:02 am Post subject: Rotax 914 EGT Probe Installation Torque

Hi! Very slight hand torque or you will snap the hexagon collar off at it’s waist. If they leak you can still tighten them a little more.  

Regards  

Bob Harrison.G-PTAG  

   

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Horizonspace(at)aol.com
Guest

Posted: Tue May 06, 2008 12:50 pm Post subject: Rotax 914 EGT Probe Installation Torque

In a message dated 5/3/2008 3:03:32 A.M. Central Daylight Time,  ptag.dev(at)tiscali.co.uk writes:

  	  Quote: 	
		     

Hi! Very slight hand    torque or you will snap the hexagon collar off at itâ€™s waist. If they leak you can still tighten them a    little more.   

Regards   

Bob    Harrison.G-PTAG   

    

-----Original    Message-----

From:    owner-rotaxengines-list-server(at)matronics.com    [mailto:owner-rotaxengines-list-server(at)matronics.com] On Behalf Of    Horizonspace(at)aol.com

Sent: 02 May 2008 01:52

To:    rotaxengines-list(at)matronics.com

Subject: Rotax 914 EGT    Probe Installation Torque   

    

I am    installing Westach 712-4D6K bayonet style probes and would like to know the    proper torque value for these 8mm bushings.  Does anyone know of any    reference where I can find this value? 	
 Thanks for your inputs.  Here's what I've been able to find out.   Both Phil Lockwood and Mike from Rotech Research advised that there is no Rotax  spec for this.  Phil said to "snug" it but not too tight.  He also  suggested using a high temp nickel or zinc based anti-seize compound.  Mike  suggested torquing it to standard torque value for 6mm fasteners (one size  smaller than the 8mm bushings) which is around 90 to 100 in-lbs.

 

 

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