Posted by kcbchuck on September 30, 2019 at 10:52:20 from (199.195.59.20):
I have a '74 Ford 3000 with a gas engine. It's a great tractor that was in need of a lot of TLC when I got it. One of the issues is that between 1974 and when I got it, someone decided to convert it to gravity feed. That wasn't a high priority on the fix it list until I noticed some spitting, sputtering, and eventual stalling when it would get low on fuel and I was going up or on the side of a hill.
I have no idea why they would do that since the fuel pump seems to work - has suction and pressure when removed and cycled manually. No idea if it's producing the right amount of fuel pressure or if it leaks since I don't have the plumbing complete as of yet. They didn't even do a good job when they converted to gravity feed. They cut the line coming from the tank, cut the line going into the carb, and spliced the two with a rubber hose with a plastic shutoff valve. They removed and discarded most of the other bits in between including the sediment bowl. They didn't even put another filter in the line!
Hasn't been a big deal to replumb - 5/16 steel lines with standard double flare fittings (1/2" - 20)(male, just like brake lines) - the flare nut that goes into the tank shutoff valve needs to be one of the ones that are longer or it won't seal. I didn't realize that until I was making the lines. I had to make up the difference with O-rings for the time being. So, no problems. That is, until I got to the line going from the sediment bowl to the carb. I can't figure out what those fittings are. The one from the sediment bowl is the same as the one going into the carb, with the exception that the one into the carb has a screen on the NPT side that threads into the carb (no idea what NPT size, 3/16 maybe).
I can find the fitting (377733S36 [$19.00]) and seal (377732S [$17.50]) in the New Holland catalog, I just can't see paying almost $40 for what I should be able to find for around $5 or $10.
I've rebuilt the Zenith carb with a complete kit from Mike's Carburetor Parts, added a sediment bowl from Yesterday's Tractors, and replumbed all of the missing lines with the exception of the one that's giving me problems.
I would greatly appreciate it if anyone knows an alternative or what type and size these fittings are, and is willing to share that information.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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