----------------------------------------------------------
                           TeamGrumman-List Digest Archive
                                      ---
                     Total Messages Posted Sun 03/09/14: 3
           ----------------------------------------------------------
 
 
Today's Message Index:
----------------------
 
     1. 11:17 AM - Exhaust Flange Torque  (busdriver)
     2. 11:43 AM - Re: Exhaust Flange Torque  (Bob Steward)
     3. 11:21 PM - Re: Exhaust Flange Torque  (FLYaDIVE)
 
 
 
________________________________  Message 1  _____________________________________


Time: 11:17:54 AM PST US
Subject: TeamGrumman-List: Exhaust Flange Torque
From: "busdriver" <clmiller@netzero.net>


I currently have the stock exhaust disassembled on my AG5B for an exhaust leak
at a couple of the flanges.  I have everything cleaned up, trued up, new clamps,
gaskets, and attaching hardware.  Was wondering what the torque values are
for reassembly?  I have found "40 in/lb minimum" for the studs (seems a bit vague)
and everything from 90-204 in/lb for the flange nuts (using new internal
locking star washers).  Any assistance would be greatly appreciated.  Thank you!


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=420045#420045


________________________________  Message 2  _____________________________________


Time: 11:43:21 AM PST US
Subject: Re: TeamGrumman-List: Exhaust Flange Torque
From: Bob Steward <n76lima@mindspring.com>

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Ci0tQm9iIFN0ZXdhcmQKQmlybWluZ2hhbSwgQUw

________________________________  Message 3  _____________________________________


Time: 11:21:23 PM PST US
Subject: Re: TeamGrumman-List: Exhaust Flange Torque
From: FLYaDIVE <flyadive@gmail.com>

Bus:

You are dealing with STEEL studs and hardened STEEL nuts.
So, the easy way is to pull out the maintance manual and usually in the
last section ther will be a torque chart.
Look up the DIAMETER and THREAD COUNT for the size of the stud.  It will
have the torque value & +/- tolerance.  Remember this value is for a dry
thread...  No oil, no anti seize.
TRICK:  It is a pain to get the blow proof gaskets, exhaust, washers and
nuts all pulled up and in place.  So use a smear of High Temp RTV to hold
the blow proof gasket in place.  Once in place then you can position the
exhaust and only use a couple of nuts LOOSELY just to hold it.  Then you
can put the NEW star washers in place, snug the nuts.  Then, torque as
required.
NOW - The RTV is there only to hold things in place.  Some will say the RTV
will not hold up to the exhaust temps.  So what...  It holds things in
place and... I have never had a leak once installed this way.  Permatex
makes a copper RTV that is up around 1200 F.  It works.

Best of luck,
Barry
"Chop'd Liver"


On Sunday, March 9, 2014, busdriver <clmiller@netzero.net> wrote:

> >
>
> I currently have the stock exhaust disassembled on my AG5B for an exhaust
> leak at a couple of the flanges.  I have everything cleaned up, trued up,
> new clamps, gaskets, and attaching hardware.  Was wondering what the torque
> values are for reassembly?  I have found "40 in/lb minimum" for the studs
> (seems a bit vague) and everything from 90-204 in/lb for the flange nuts
> (using new internal locking star washers).  Any assistance would be greatly
> appreciated.  Thank you!
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=420045#420045
>
>

 

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