Fuel Tank Valve Repair?

Kerplooey

Member
Hey all. Still working on fixing the stuff needed to make sure the tractor is safe to use. Fixed the exhaust issue at the flange; found half of the clamp inverted, allowing exhaust to blow directly onto the carb. So, my next and about final thing to fix in the short term is the Fuel Tank Shutoff leaks and drips right down onto the underslung exhaust! :shock: I have the original Wing-nut style valve, amd it is leaking where the "screw" or valve shaft goes into the T. (So, the backside of the valve.) Is there a fix for this? I took it apart, and saw that there are threads, bit there wasn't any kind of rubber or seal inside. Just thought I'd check with you guys for solutions. A new valve prices for over $200. WHAT?! The previous owner had cut the rigid line and replaced it with a flexible hose with an inline valve. Not really fond of it and would really like to have a shutoff at the tank.
 
If the fuel shutoff is dripping just a bit, I take a small 6" crescent wrench out and give the brass nut a little tweak - tighten slightly. One has to find the middle ground between being able to turn the stem and having it not drip when turned "on". So far this method has not failed, but I've never removed the nut to view the packing behind it.
 
If the fuel shutoff is dripping just a bit, I take a small 6" crescent wrench out and give the brass nut a little tweak - tighten slightly. One has to find the middle ground between being able to turn the stem and having it not drip when turned "on". So far this method has not failed, but I've never removed the nut to view the packing behind it.
 
I believe that may be the problem. There is no packing in there to tighten up against with the nut. Instead of using the OE replacement, is there a more economical option?
 
(quoted from post at 08:07:52 09/24/18) I have fixed them by taking the packing nut off and wrapping some teflon pipe tape around the stem and then retightening the
nut.

I thought about doing that, but wasn't sure if something was missing, leaving a sleeping dangerous situation.
 
Dangerous situation, such as?

Such as fuel dripping on the underslung exhaust? You already have that.

If it's not leaking and the fuel tank can vent through the cap, it's about as safe as it can be.

Keep in mind that fuel petcocks are designed to be all the way open or all the way closed, nothing in between. In between, it will leak.
 
(quoted from post at 11:00:26 09/24/18) Dangerous situation, such as?

Such as fuel dripping on the underslung exhaust? You already have that.

If it's not leaking and the fuel tank can vent through the cap, it's about as safe as it can be.

Keep in mind that fuel petcocks are designed to be all the way open or all the way closed, nothing in between. In between, it will leak.

Yes, I do currently have that, and I'm not operating in that condition. I bought the tractor with a host of problems that needed corrected and this is one of them.
 

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