The Ford Barn

HDowse · 04-04-2018, 05:51 PM

On a dust off ride on Sunday, my tank gauge read empty with a full tank so on return I removed the sending unit and found the float full of gas. I tested the gauge and it works OK. A new float and gasket are on the way from Joe's but I want to be sure I reinstall the sending unit and gasket back on the tank correctly. My question is should I put the gasket on dry or use a sealer like the gas-resistant Seal All? The sealer makes sense but is there a reason to put it on dry? Thanks for your help.

AlexLohmann1 · 04-04-2018, 05:54 PM

If I were you I'd put it on with some sort of liquid sealant.

Sent from my SM-G955U using Tapatalk

325w · 04-04-2018, 07:04 PM

Look at the sealer that says for gasoline. Yellow tube last I bought was from auto zone.

Gary Tosel · 04-04-2018, 07:14 PM

The sender unit screw hole spacing is such that it will only install in one position to be sure the float is pointing in the correct direction. Sealant can be used, but be sure it is good for gasoline.

19Fordy · 04-05-2018, 09:23 AM

This sealer works. Not cheap.
http://www.aircraftspruce.com/catalo...?clickkey=4275

hotrodart · 04-05-2018, 01:55 PM

Sponsored Links (Register now to hide all advertisements)

I put a new sender in my '40 a couple of years ago when i put in a new gas tank.....used a cork gasket, no sealer......does not leak or seep.

corvette8n · 04-05-2018, 01:59 PM

I've had mine off several times, the first time I used the cork gasket, after laying around for a couple of days it deformed, I have switched to the rubber one that I believe came from C&G, been opened up several times and put back together with no problems.

19Fordy · 04-05-2018, 02:40 PM

Easy to make your own gasket cut from the cardboard backing from note pads. Use 2.

adileo · 04-05-2018, 02:49 PM

My 52 F1 leaked with the rubber gasket. I switched to cork and it still leaked. With gas tank in cab you can imagine the smell.

I took it apart, put Seal-all (recommended here by a fellow Barner) both sides of gasket and no more leak, no more stink

JSeery · 04-05-2018, 04:12 PM

With all the sealer just be sure the sender ring is still grounded to the tank. The screws should ground it through the sealer, but just be sure it can conduct.

19Fordy · 04-05-2018, 05:27 PM

J: To be grounded beyond belief I run a separate wire from the tank to the frame.

HDowse · 04-05-2018, 06:24 PM

19Fordy, good point on the ground to frame. I've got the Seal All. I'll fit it all together tomorrow and run a ground from one of the screws to the frame.

JSeery · 04-05-2018, 06:26 PM

You can never have too many grounds!

04-04-2018, 05:51 PM	#1
HDowse Senior Member Join Date: May 2010 Location: Hancock, New Hampshire Posts: 375	Gas tank sender unit gasket On a dust off ride on Sunday, my tank gauge read empty with a full tank so on return I removed the sending unit and found the float full of gas. I tested the gauge and it works OK. A new float and gasket are on the way from Joe's but I want to be sure I reinstall the sending unit and gasket back on the tank correctly. My question is should I put the gasket on dry or use a sealer like the gas-resistant Seal All? The sealer makes sense but is there a reason to put it on dry? Thanks for your help.

04-04-2018, 05:54 PM	#2
AlexLohmann1 Senior Member Join Date: Aug 2016 Location: Southern Illinois Posts: 230	Re: Gas tank sender unit gasket If I were you I'd put it on with some sort of liquid sealant. Sent from my SM-G955U using Tapatalk

04-04-2018, 07:04 PM	#3
325w Senior Member Join Date: Feb 2011 Location: Arlington, Texas Posts: 379	Re: Gas tank sender unit gasket Look at the sealer that says for gasoline. Yellow tube last I bought was from auto zone.

04-04-2018, 07:14 PM	#4
Gary Tosel Senior Member Join Date: May 2010 Location: Minnesota Posts: 1,138	Re: Gas tank sender unit gasket The sender unit screw hole spacing is such that it will only install in one position to be sure the float is pointing in the correct direction. Sealant can be used, but be sure it is good for gasoline.

04-05-2018, 09:23 AM	#5
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,936	Re: Gas tank sender unit gasket This sealer works. Not cheap. http://www.aircraftspruce.com/catalo...?clickkey=4275

04-05-2018, 01:55 PM	#6
hotrodart Senior Member Join Date: May 2010 Location: Shenandoah Valley Virginia Posts: 220	Re: Gas tank sender unit gasket Sponsored Links (Register now to hide all advertisements) I put a new sender in my '40 a couple of years ago when i put in a new gas tank.....used a cork gasket, no sealer......does not leak or seep.

04-05-2018, 01:59 PM	#7
corvette8n Senior Member Join Date: Jul 2010 Location: 36 miles north of Albany NY Posts: 2,949	Re: Gas tank sender unit gasket I've had mine off several times, the first time I used the cork gasket, after laying around for a couple of days it deformed, I have switched to the rubber one that I believe came from C&G, been opened up several times and put back together with no problems.

04-05-2018, 02:40 PM	#8
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,936	Re: Gas tank sender unit gasket Easy to make your own gasket cut from the cardboard backing from note pads. Use 2. Last edited by 19Fordy; 04-05-2018 at 05:26 PM.

04-05-2018, 02:49 PM	#9
adileo Senior Member Join Date: Jun 2014 Location: New Jersey Posts: 1,772	Re: Gas tank sender unit gasket My 52 F1 leaked with the rubber gasket. I switched to cork and it still leaked. With gas tank in cab you can imagine the smell. I took it apart, put Seal-all (recommended here by a fellow Barner) both sides of gasket and no more leak, no more stink __________________ Thanks Andy 1952 F1

04-05-2018, 04:12 PM	#10
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: Gas tank sender unit gasket With all the sealer just be sure the sender ring is still grounded to the tank. The screws should ground it through the sealer, but just be sure it can conduct.

04-05-2018, 05:27 PM	#11
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,936	Re: Gas tank sender unit gasket J: To be grounded beyond belief I run a separate wire from the tank to the frame.

04-05-2018, 06:24 PM	#12
HDowse Senior Member Join Date: May 2010 Location: Hancock, New Hampshire Posts: 375	Re: Gas tank sender unit gasket 19Fordy, good point on the ground to frame. I've got the Seal All. I'll fit it all together tomorrow and run a ground from one of the screws to the frame.

04-05-2018, 06:26 PM	#13
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: Gas tank sender unit gasket You can never have too many grounds!