Re: [FWDLK] Sealer for Gas Tank Sending Unit

[Ron Waters <ronbo97@xxxxxxxxxxx>]

Title: [FWDLK] Sealer for Gas Tank Sending Unit



I haven't removed the circular retainer yet, but if I were to guess, I would say that it's the spotwelded ring that the retainer fits into that's not holding the retainer tight against the seal. I'm trying to avoid removing the tank. So I'm looking for a fairly easy fix at first. I may try Dick Whelan's idea along with a new seal. If that doesn't work, I'll swap out the tank with one of my spares.

 

Ron

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

From: jrawa@xxxxxxx

To: L-FORWARDLOOK@xxxxxxxxxxxxx

Sent: Tuesday, June 04, 2013 9:27 PM

Subject: Re: [FWDLK] Sealer for Gas Tank Sending Unit

It's a squared rubber gasket, the modern equivalent would be a viton O ring, not sure what the repop sending units come with, as far as material, but they include o rings. Vans auto sells the tanks and senders.. anyway, no chemical sealer outside of actual tank sealer or JB weld will do the trick.
Is it the seal/O ring, or the depressed area/retainer having an issue where it was sweated to the tank ? If its not a metal leak, just put in a nice new o ring, applying tank sealer externally is at best a temp fix.. been there, tried all kwik fixes... Nothing beats sweating some new lead or replacing a seal.. precautions on tank welding and soldering next week!

Sent from my Verizon Wireless Phone

----- Reply message -----
From: "Dave Stragand" <dave.stragand@xxxxxxxxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
Subject: [FWDLK] Sealer for Gas Tank Sending Unit
Date: Tue, Jun 4, 2013 9:01 pm

Isn't it a fiber seal?  It's still used on the modern cars.  I believe the last one I installed was fiber/paper, and I got it from a dealership.  If so, it might swell when exposed to fuel to further seal.

 

Did you use the proper tool to tighten the circular ring?  The hammer and screwdriver method can warp it.

 

-Dave

---

From: Forward Look Mopar Discussion List on behalf of Ron Waters
Sent: Tue 6/4/2013 6:28 PM
To: L-FORWARDLOOK@xxxxxxxxxxxxx
Subject: [FWDLK] Sealer for Gas Tank Sending Unit

Hi All -

On my 58 Plymouth, I have a gas leak where the gas tank sending unit meets
the tank. I have the proper rubber seal between the circular holddown and
the sending unit. What I am looking for is a sealer, such as some variety of
Permatex RTV, that I can put between the seal and the sending unit. This
sealer should be impervious to gas, while at the same time be removeable in
case I need to remove the sending unit from the tank. The only thing that
comes to mind right now is a gas tank sealer, such as the Bill Hirsh stuff.
But I don't want to go out and buy a whole can just for this small area. Any
thoughts ?

Ron

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