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Fuel Tank Sender Sealing

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Ianrat

Joined: 31 Mar 2008
Posts: 43
Location: Brisbane AUSTRALIA

Posted: Mon Feb 22, 2010 2:53 am Post subject: Fuel Tank Sender Sealing

Before I installed the fuel tanks into my wings I tested them for leaks. 

I have since read that some builders have put sealant over the sender before enclosing in the wing. 

Now that i have to pull them out to do the mods I would like some feed back on how many just put them in and how many sealed there's. 

And if they did seal them what did they use.



Thank you  

Ianrat



CH 601 XL

Brisbane Australia

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chris Sinfield

Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia

Posted: Mon Feb 22, 2010 2:59 am Post subject: Re: Fuel Tank Sender Sealing

Ian 

I used Proseal..

chris



do not archive

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DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Mon Feb 22, 2010 3:45 am Post subject: Re: Fuel Tank Sender Sealing

I used Permatex non-hardening sealant #2 on the gasket and under the screw heads.  Pulling the tanks for the upgrades after 18 months of flying, one sender was bone dry and the other had some slight blue (100LL) staining on it.  It never leaked enough to drop fuel on the floor and there is only a small trace of blue on the skin below the tank.  I think it came from a screw head and am hoping that a little more sealant under the screws again will do the trick.  I do not want to pull the entire sender for a tiny bit of seepage.   I would probably do more damage than good.

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_________________
David Gallagher
Cincinnati, OH area

jaybannist(at)cs.com
Guest

Posted: Mon Feb 22, 2010 4:52 am Post subject: Fuel Tank Sender Sealing

Ian,

  

  I installed my senders with the gasket and the paper washers on the screws that came with the kit, no sealant.  Neither one of them leaked.  I did not use any sealant on the fittings, either.  One side leaked and the other one didn't.  Just to be sure, I would recommend using a very small amount of anti-seize sealant on those male fitting threads.

  

  Jay Bannister

  

     

  

    

     

  

     

  

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z601c(at)anemicaardvark.c
Guest

Posted: Mon Feb 22, 2010 10:24 am Post subject: Fuel Tank Sender Sealing

I pressure checked the tanks after I put the supplied seals in place, and used 

a water and dish soap mix to look for air leaks. I found a few, and sealed the 

leaks with Dow Corning RTV 736 heat resistant sealant.



After the sealant had cured, I did another pressure check, and found no leaks. 

If there are no leaks when one does a pressure check, I'm not really sure 

where one would apply the sealant, and feel confident it was doing any good, 

short of smearing it on every place that might leak.



On Monday 22 February 2010 04:53:48 Ianrat wrote:

 	  Quote: 	
		   

 

 Before I installed the fuel tanks into my wings I tested them for leaks.

 I have since read that some builders have put sealant over the sender

  before enclosing in the wing. Now that i have to pull them out to do the

  mods I would like some feed back on how many just put them in and how many

  sealed there's. And if they did seal them what did they use.

 

 Thank you 

 

 

 Ianrat

 

 CH 601 XL

 Brisbane Australia


	


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