Installing new fuel sending unit

[GREYLOCK]

I just bought a new fuel sending unit to replace my current one. I bought it from wema usa it looks like it is made very well compared to the origional one i also bought a new gauge from them. My question is should i use some type of sealant(fuel resistant rtv?) along with the gasket supplied the tank is aluminum . and maybe a thread sealant (teflon paste)on the screws that attach it. any help is appreciated. i cant wait to have a gauge/sender that i have faith in. when the tank was full before the gauge would suddenly slam back to empty!

 

[seasick]

New gasket, no sealant. Be careful and don't overtighten the screws. In addition to snapping a bolt, you can distort the flange if you over tighten.
Make sure you clean up the ground wire contact and that ity makes a good connection.

 

[BobP]

I'd use some sealant only under screw heads. silicon is ok

If tank surface under gasket is not corroded, no sealant needed.

Make sure you do new deck plates or O rings, no water is to enter onto top of tank.

 

[JUST-IN-TIME]

NO SEALANT
Clean surfaces

only on screws if your super anal, i use gas pipe line sealer on screws

DO NOT USE SILICON, it is not gas/fumes proof

 

[hotajax]

Fuel Sender

I replaced mine using only a gasket and clean surfaces. Somehow I ended up with a leak. Took it apart again, and used some non-hardening Perma-tex. It has been holding up for about 2 years now.

 

[87offshore24]

make sure you use the nyltite plastic sealing washers on the screws.

 

[Grog]

You can use Halomar to seal the threads (good stuff but a little hard to find).