Fuel level sensor, alarm, what is the best sealer?

[t140v]

Evening all,

What is the best sealer you have used to repair a leaking fuel level alarm sender.

Regards Stuart

[mick695]

Hi Stuart

I used JB Weld when I carried out the mod to my fuel tap.... seems to be unaffected by petrol so far, hopefully should work on your fuel sender...

Cheers

Mick

[steve w]

HI stuart will ring you in morning.


steve

[wayne]

I bought this on Ebay from a UK seller. It's (expired) aviation fuel tank sealant. The repair on one of my RE's is around 10 years old. I also did a couple for friends at the same time and have not had a failure. It's a one use only product so line up as many defective fuel level sensors and do them all. There's enough to do more than you could possibly assemble.

Member pmcburney has also done a long term successful repair with this sealant.

I'll give you all the numbers as I'm not sure which is the most definitive.

SEMKIT, PPG Aerospace, PR1422A2-M1002, item 25, SHK 3696, 130 ml semkit.

The original product would probably be very expensive but the expired stuff worked fine. It's got some serious warnings on it so that probably means it's really good.

[HGH 770N]

I have used the Aviation chemical a few years ago and although the chemical is not affected by the fuel,I found the bond onto the sender itself failed and leak started again.
I found a better solution is to replace the insulated rivet with a stainless nut and bolt with 2 Viton seals & washers and a eyelet for the wire.

[rpr851r]

I pondered that fix with the viton seals and pin but didn’t get it all worked out. Do you happen to have pictures or a sketch of what you did? I ultimately went with the SEM kit aviation fuel tank sealer but don’t have any feedback yet as my tank still hasn’t seen fuel since I started the project 4 or more years ago.

[rotarym]

A sketch or picture would be good if possible.
Kerry

[hudson]

The flourosilicone O-Ring is compressed between the two plastic bushings held by a binding screw. Square hole where the red plastic was has been machined to a round hole for the o-ring and plastic bushings.  The new thermistor sensor is from E-Bay. A lot of work but I think it will be a permanent repair. All of the thermistors sensors I have check have been good, just this one was dysfunctional from years of sitting in a tank full of corrosion.  

[rotarym]

Fantastic job
Would it be to much trouble to give a few dimensions of things, what bush is made of, hole size o ring size etc. Also a picture of the other assembled one looking at the from a different angle as to see inside fixture of fittings. I think what you have done will fix this leak for good. Your post on diaphragm o ring size fixed my tap leak and keen to fix the sensor.
Excellent piece of work and goes to show how important this forum is to keep these bikes on the road with all the information that is generated with tips from others.
Kerry

[rpr851r]

Very nifty fix. Thanks for sharing.