F-20 oil guage question

Tom Fleming

Well-known Member
the parts manual calls for oil guage 18113 DA. i have a 31041-DB which appears to be for an F-12/F-14. are the pressure ranges the same? Where should I expect the needle to be if I am running ok. Right now, running straight SAE HD 30, it is about 1/3 of the total movement, and pointing at the "o" in oil, which puts it about 10 o'clock on the dial. I also notice it takes a minute or two for it to pressure up and start reading.

I have no nocks or noises coming from the lower end, and all the connecting rod shims are still installed.

soooo, $25 question is, is the pressure ok.
 
as an additional note, I had read that the oil pressure in the older combination splash/pressure lubricated engines ran lower. And if you replaced the original guage with a newer one, it will read in the lower portion of the range.
 
The oil gauge should be pointing in the middle or higher in the white area of the gauge, if it is in the red zone, don't run the engine. The F-12, F-14, F-20, F-30 all use the same oil gauge.
 
Thanks Andy. This one does not have a "red" zone, but I know what you are talking about, as my letter series all have that type of guage.

If I were to estimate, I would say this is a bit past that, but not much.

I am going to try some SAE 40 next change. right now I have 1 quart of Rislone replacing 1 quart of oil to clean out some of the sludge. I have been running her for an hour at a time, and will try to get 8-10 hours on her, then change the oil and filter.

I do have a number guage, and could probably see how many lbs the old girl is pushing.
 
Tom,
You aren't oiling much, pushing some through the filter and to
the governor and basically keeping the splash trough full. A
high reading is almost as much of a concern because it means
something is plugged and may not be filling all the troughs. You
do have a filter in it that can cause a long delay to start building
pressure, oil goes to splash pans first. Seems that it is 10-15 #
on a numeric guage.
 
Hi Tom, I think my F-12 has that same gauge you are running and it sits just below 12 o clock when it is running. The older 10-20 and regulars only carried about 6 lbs pressure so a modern gauge would barely bump the needle. Just remember that gauges are usually calibrated to the highest expected possible range from the oil system without spiking the needle.
 
Well, oil pressure has been always on my mind. I recently rebuilt a Farmall Regular. I complelelty weht over the oil pump, rebuilding it to close tolerances. I made new oil lines as the old ones were kinda built up with junk. I flushed out the oil manifold and cleaned everything. I even installed a new spring for the relief valve. I am getting 30psi. An old friend who worked for an IHC dealership told me that these units used to have a cloth over a spring as an oil filter, or a fine metal mesh. With the modern high performance paper filters the oil cannot filter through as fast and thus builds oil pressure. Some day I might come accross a NOS cloth oil filter and try it out.
 
The F12 and 20 oil gauges are not the same. An F12 w/ good pressure should run 30-40 pounds which is what eh 31041 DB gauge is calibrated to.
Max. pressure on the F20 is about 15, which is what the 18113 gauge is calibrated to. One thing you might check to get your pressure up is to remove the oil lines and thoroughly clean with kerosene. There is also an oiling tube in the bottom of the block. Easy to get to if you drop the pan. Also when the pan is down remove oil pump screen and clean out. These are all easy fixes and, if done, should increase the oil pressure.
 
Brruce S, thanks. you appear to be right on the money. I installed a number guage I have. cold, it is pushing about 13 psi., warm it drops to about 11 psi.

I guess that is ok for this old girl.
 
Well, I went and did something wild. I read the IH shop manual for the F-20. oil pressure is to be in the 13-15 pounds range. Since i am running 10-13, I am comforatble that things are ok in the lubrication arena.

thanks to everyone that responded.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top