Fuel tap/petcock leaking - Triumph Forum: Triumph Rat Motorcycle Forums
Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer.

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post #1 of 11 (permalink) Old 08-23-2019, 03:36 PM Thread Starter
Minitwins
Main Motorcycle: Thunderbird Sport (98)
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Fuel tap/petcock leaking

98 Thunderbird Sport - the fuel tap/petcock has started to leak, not from the coupling to the tank but by the turn handle - is there a replacement available for it?
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post #2 of 11 (permalink) Old 08-23-2019, 04:27 PM
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I replaced mine for a Pingel. No more leaks ( even after buying a new Triumph one!).


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post #3 of 11 (permalink) Old 08-23-2019, 05:01 PM
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I think there's an o-ring in there you can replace.

Go to a place that repairs light aircraft and ask if you can get a little "Fuel-Lub". They'll probably give you some. Use it to lube the plug in the valve and put a little on the new o-ring. Good for another 20 years.

A little Fuel-Lub goes a long way... Too much will plug up things downstream.

John
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Last edited by WSC; 08-23-2019 at 05:06 PM.
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post #4 of 11 (permalink) Old 08-25-2019, 11:47 AM Thread Starter
Minitwins
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Thank you both.

Using a Pingel, does it require any modifications? Or is it a straight swap? Do you have a part number? There are so many on the Pingel website!

Searching around, it seems that this might be the one - Pingel - 4211-CH - Power-Flo Petcock, 90deg. Outlet Facing Rearward - Chrome

And this previous post - https://www.triumphrat.net/hinckley-...lacements.html

I'll look into the lube, Wiley Post airport is very near too me, so I'll go and pay them a visit.

Last edited by curlywurly; 08-25-2019 at 12:13 PM.
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post #5 of 11 (permalink) Old 08-25-2019, 02:18 PM
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Quote:
Originally Posted by curlywurly View Post
Using a Pingel, does it require any modifications?
You'll have to enlarge the hole in the tank slightly. Not difficult. Use a round file or a reamer.

Quote:
I'll look into the lube, Wiley Post airport is very near too me, so I'll go and pay them a visit.
Tell them you want to lube a plug valve. A small smear in a plastic bag is all you need.

John
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2007 HD FXDL
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post #6 of 11 (permalink) Old 08-25-2019, 05:15 PM
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You also need the 34mm adapter plate for the Pingle. Love it but it took three attempts at installing without leaking. Needed a judicious amount of solvent based gasket dressing.

First time I just used the included gasket and it leaked bad.

Second time I cut a new thicker gasket and coated with dressing. It still leaked but not nearly as bad.

This time, new gasket, cleaned mounting area down to bare metal, applied dressing using the “too much is always better than not enough” philosophy, let dressing cure for two hours before assembly, waited overnight before adding gas after assembly. Third time was the charm.

Pingle supposedly has an alternate rubber gasket that works better on our bikes.

As long as it has more than one wheel, I'm game.
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post #7 of 11 (permalink) Old 08-26-2019, 10:03 AM
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Quote:
Originally Posted by strange21 View Post
You also need the 34mm adapter plate for the Pingle. Love it but it took three attempts at installing without leaking. Needed a judicious amount of solvent based gasket dressing.

First time I just used the included gasket and it leaked bad.

Second time I cut a new thicker gasket and coated with dressing. It still leaked but not nearly as bad.

This time, new gasket, cleaned mounting area down to bare metal, applied dressing using the “too much is always better than not enough” philosophy, let dressing cure for two hours before assembly, waited overnight before adding gas after assembly. Third time was the charm.

Pingle supposedly has an alternate rubber gasket that works better on our bikes.


When you order a Pingel just ask for the rubber gasket and the problem is solved...


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post #8 of 11 (permalink) Old 08-26-2019, 11:47 AM Thread Starter
Minitwins
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Thank you, lots of great info.

BTW - I'll be visiting the UK mid October, so there is a possibility I can source one while over there, I have a friend there who specializes in British parts, and also a ton of others parts for Japanese bikes.
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post #9 of 11 (permalink) Old 08-26-2019, 10:48 PM
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I’m one of the few that have sourced a Kawasaki vacuum operated fuel valve, Slinky is another member that has a Kawasaki model off a Zephyr? but his may not be vacuum operated? Don’t remember. Anyway mine is from an early 80’s Kawasaki 550/750 and it fit perfectly, the bolt hole spacing was exactly the same and the vacuum line is tapped into the middle carb vacuum port.

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Last edited by BRG-BIRD; 08-26-2019 at 10:52 PM.
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post #10 of 11 (permalink) Old 08-30-2019, 01:55 PM Thread Starter
Minitwins
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Thanks BRG-BIRD, I remembering seeing something about using a Kawasaki one, fortunately, the aforementioned friend in the UK has a bunch of old Z650, Z1000 and the such like, so I'll try my luck there first, he is only a few miles from my UK hometown of Malvern, Worcestershire. I thought I'd read that a Suzuki RGV250 might fit, but I very might be wrong on that.
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