Help- Fuel Leak - Triumph Forum: Triumph Rat Motorcycle Forums
Water Cooled Twins Technical Talk Technical Talk for water cooled Triumph Twins.

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  • 1 Post By Ashman
  • 2 Post By jb44
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post #1 of 7 (permalink) Old 07-19-2019, 03:58 PM Thread Starter
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Help- Fuel Leak

Hi All,

I removed the fuel tank the other day to hard-wire a GPS and after removing all the electrical connections and hose underneath the tank, I ended up disconnecting the banjo bolt to take the fuel tank completely off the frame. Re-fit everything back once the wiring was done and didn't take the bike out since then.

This morning, when I went out for a ride, I smelled strong petrol/gas which at one point became unbearable. Checked the sides of the bike for any leak but there was none.

Reached home, unbolted the tank and saw petrol drops on the banjo bolt. Tightened it a bit but the leak kind of increased. Tool off everything and fit the bolt again, this time with both the washers in the bolt (like in the exploded view below) and the tank became a fuel fountain. Gave up and wrapped up for the day.

Anyone know what I am doing wrong or any idea how to fit the banjo bolt correctly? There is no instruction in the service manual and nothing on the internet which can help shed some light.

See pics attached/below: Banjo nut and exploded view
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post #2 of 7 (permalink) Old 07-19-2019, 06:50 PM
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Not sure why you took that bolt out to remove the tank as the fuel hose has a quick release fitting for tank removeal, what has happen is you will now have to replace the washers on that bolt to seal it as the washers are soft, most of the time can be reused but in your case not so, you might be able to seal it with some fuel sealent.

Ashley
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post #3 of 7 (permalink) Old 07-20-2019, 06:42 AM Thread Starter
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Thanks Ashman. There is no quick release clip underneath the tank in the newer models and the clip on the other end of the hose was impossible to take out despite all my will.

I’l try with new washers and see what happens. It’s just a bugger!
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post #4 of 7 (permalink) Old 07-20-2019, 08:11 AM
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Originally Posted by Mystic View Post
..... There is no quick release clip underneath the tank in the newer models and the clip on the other end of the hose was impossible to take out despite all my will......
Yes there is a quick disconnect:



The specialized tool for disconnecting makes the job easier.



In the meantime, try Ashman's suggestion of using new crush washers and torquing down the banjo bolt.

jb
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Last edited by jb44; 07-20-2019 at 08:15 AM.
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post #5 of 7 (permalink) Old 07-20-2019, 10:19 AM
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Canít it be done without the tool?
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post #6 of 7 (permalink) Old 07-20-2019, 11:38 AM
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Quote:
Originally Posted by Burren Boyo. View Post
Can’t it be done without the tool?
Yes. You just have to push the tabs in. It’s a bitch to get off and more of a bitch to snap it back on. But it does go on. WD-40 helps.
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post #7 of 7 (permalink) Old 07-20-2019, 12:34 PM Thread Starter
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Thanks everyone for the valuable feedback. Whilst waiting for the replacement washers, I filed the current ones to level the surface, fit them back on whilst tapping on the bolt head very mildly with a rubber mallet in order to seal the washers properly.

It worked! And no more leaks. Phew.

And I have ordered a pair of that wretched clip pliers too to avoid any further tinkering with the banjos.




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