Thread: Gas tank issue
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Old 03-23-2008, 10:08 AM
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Hello keepinitreel,

I had a problem with the anti-siphon valve and also the down tube into the tank had a crack in it. I had to add an "access" fitting to my motor well to get a bigger wrench in to crank out the elbow fitting. Nothing pretty about it, the two aluminum parts (elbow and molded-in bushing) were galled together and I lost about 50% of the threads from the elbow. Fortunately, this left extra material welded to the bushing. I was able to re-tap the pipe threads in the bushing. Old pipe dope caught most of the shavings in the tap and only a few were lost in the tank. If you have room, someone could hold a vacuum hose near the tap that might suck up the chips.

Anyway, after all that, I went back in with a new fitting but used never seize rather than pipe dope. I replaced the anti-siphon check valve with a brass quarter-turn valve.

Moeller was helpful in that they gave me the part number that I was supposed to have for the replacement fitting and down tube. I think I also got a sketch of the assembly, but the only you don't see is the barb on the elbow, poly tube pressed on the barb and a stainless screen on the end of the tube.

Triumph originally sent me a 4" too short tube assembly. I gave the part number to my dealer who forwarded it to the factory. They then sent me a part about 8" longer than Moeller had described. When I got the part out, It was between the length of the two parts from the factory. Rather than risk damaging the barb/tube connection (location of my original crack) I trimmed the tube, removed the screen and put it on the end of the trimmed tube. I heated the tube with a heat gun (just to soften the poly) and pushed the screen on. The plastic molds into the mesh of the screen and should never come out.

My tank is only 21 gallons, but the fitting picture looks the same.

Good luck with the repairs.

Bob
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