fuel tank shut off?

ejensen · Feb 3, 2015

I'm sure we have identified the tractor we are working on as a 1959 ford 871. Has the select o speed 10 forward, 2 reverse, single speed pto, and the 172 ford overhead gas engine. My friend, 100 miles away from where I live, sent me some pictures. I would like to know if the picture I have included is the fuel tank shut off at the tank. serial number of tractor: 67220
I have been helping him work on his tractor from my home. Eventually I will make a trip to where he lives.

Brendon Warren · Feb 3, 2015

It sure is.

ejensen · Feb 3, 2015

Brendon,
Thank you. What has been occurring with my friends tractor: It will start and run probably all day if simply pulling a trailer. When connected to something such as a large drag the engine begins to miss. When he pulled out the choke engine continued to run.
Hopefully I will be able to guide him through a carburetor cleaning. Secondly he could apply air pressure to the line that comes from the tank.
I have installed solid state ignitions, PerTronix, on all my farm tractors. Would like to have my friend do the same. What do you think about electronic ignitions for the older farm tractors plus convert them to 12 volts. His has been converted to 12 volts using a single wire alternator.
Tractors on our website einarjensen.com have all been converted to solid state ignition with the exception of the straight diesel tractors and the one TD6 which still has a magneto.

DeltaRed · Feb 3, 2015

Yes,that is the fuel shutoff. Your problem is gas flow.Could be crap in the shutoff itself(I would check that first),or the carb could have the obstruction.I had a JD 55 combine that acted that way. Turns out there was a piece /flake of green paint stuck in the needle valve inlet.It was shutting/stopping down the flow of gas into the carb.Got to where the thing refused to run at all... Just how it got there I have no idea.

Brendon Warren · Feb 3, 2015

Probably fuel issue if the choke helps. Some really good ford guys down on the ford board. Maybe one of them could point you right directly to your problem.

old · Feb 3, 2015

On that tractor you can look inside the tank by way of the fuel cap and see where the gas shut off sits in the tank and see if it has dirt/rust etc in that area. Have some one blow the line out at the same time some one shines a light in the tank and watch for dirt etc to come out. Also the banjo bolt where the sediment bowl goes on the carb can be clogged up

ejensen · Feb 3, 2015

Old,
Thanks for the information. I'll pass it on to Bill.
Some information about his 871 ford . He was still working and I was retired. Found the tractor and Bill bought it for $500. Tires excellent and the person selling it had John Deeres. We ordered all parts necessary to repair the 3 point, 12 volt conversions, gauges, from out host. At the time I was repairing his 9 N which I had found for him. Someone else installed the ignition gear on his 871. I had never see a tractor with a transmission such as is on his 871

ejensen · Feb 3, 2015

Brendon,

Thanks for the information.

ejensen · Feb 3, 2015

Delta Red,

Thanks for the reply.

Mike (WA) · Feb 3, 2015

From similar situations in the past, I would recommend making sure you have good fuel flow out of the tank before messing with the carburetor. When you disconnect the line at the carburetor and open the shut-off, you should get a steady stream. If its just a fast drip, its not enough to run tractor under load and needs cleaning.

old · Feb 3, 2015

The SOS when it works right is not to bad but when it messes up it can be a big money pit

BobinSD · Feb 3, 2015

As others have noted, that is the fuel shutoff. When they go bad, the available replacements are rumored to be absolute junk. There is a fix on the Ford board for how to make the old one work (mine wouldn't shut off, not the problem you're having).

You're not there yet, but your friend will be if he uses that shutoff very often. Once I got mine working (surgery on pot-metal parts--yuck) I ran copper line down from that shutoff and put my own shutoff in line. I use that one day-to-day and only close the one you are showing when I need to take the tank off.

Mike in Mn. · Feb 3, 2015

Had an 861 in the shop with that same set up about a month ago, I believe their is a screen on the top of that unit in the tank.

ejensen · Feb 3, 2015

Hi Mike,

I have seen the tank pick up in some of the older tractors I have plug up at the point where the gas leaves the tank and goes to the sediment bowl. Particularly on the IHC tractors I have. I think ford put the sediment bowl by the carburetor due to lack of room
Thanks for the reply
sediment bowls on the 2N, 8N, and jubilee I have are at the tank

ejensen · Feb 3, 2015

Old,
I thought he should have kept the 9N which we repaired extensively and get rid of the SOS.
thanks for the thought,

Chris

ejensen · Feb 3, 2015

Mike,

My one gallon gas tank should determine if gas flow is the problem.

old · Feb 3, 2015

Big thing on the SOS is doing the maintenance as it needs as it should be done. Oil changes and band adjustment etc

ejensen · Feb 3, 2015

Old,

My friend uses the tractor to run a 4 foot woods rotary mower, drag the roads on his property, 20 acres, and pull a trailer.

old · Feb 3, 2015

All that is fine as long as things are kept up like they should be. I had a 981 at one time and sold it as soon as I could. Got it non-running but did not take me long to get it running then put it out for sale and sold pretty fast

john in la · Feb 3, 2015

Yes it has a screen in the tank.

https://public.catalog.TISCO/js_data/32730.jpg

fuel tank shut off?

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