[Farmall] oil pressure

[birddog]

Hi Bob,

As previously mentioned, My  1930 10-20 came to me with a 100 lb. 
automotive op gauge installed by the po.  That was the same as no gauge, 
because the hand hardly moved.  This last summer, I took the gauge from 
my 1927 10-20 and determined with air pressure that it is a working 
gauge of around 10 lb. capacity.  I tried it on the 1930.  Every time 
the engine was started, it would peg that gauge at the top and stick it 
there.  I would have to remove the gauge and tap it to release the 
hand.  This would occur even with a fully warmed engine.   At least that 
told me the 1930 has acceptable pressure.  At that time I found a new 30 
lb. capacity gauge that threads into the oil filter as on the regular 
and F-20.

Not being the proper mount for the 10-20 dash panel, I left the 100 lb. 
gauge in the dash for looks and unhooked the line at the filter where I 
installed the 30lb. gauge (temporary set up).   The in dash gage is not 
really visible from the  seat, so nothing is lost there.  When off the 
tractor, The working gage in the filter can be easily read through the 
hood louvers.

To make a long story short, the 1930 operates from around 12 - 15 lbs.  
Either someone has messed with this tractor to increase the pressure, or 
a change in operating pressure was made between 1927 and 1930.   ??????\

P.S.  I also tried a new 60 # gauge but it was too much range to get a 
trustworthy reading.

Charlie V in WNY

Bob Currie wrote:
> Most of the unstyled IH products ran on pretty low oil pressure from what I have gathered. In trying to determine what is "good oil pressure" for a 10-20, 15-30, Farmall Regular or F-20/F-30, I'm getting all different kinds of information. So I figure the best way to determine the good or bad pressure is with the correct oil pressure gauge for my particular tractor(s). What I've found is pretty confusing. Two different part numbers for the 10-20, 15-30 gauge show using either a 4# gauge, or a 10# gauge. I see a very nice original gauge for a Regular/F-20 on Ebay right now and the seller says it tested for a 25# gauge. I talked to a couple of gauge remanufacturing people in our hobby and they say a #15 oil pressure gauge would be correct. So my question for you folks is where would you go to find the correct pressure listings and applications for the various tractors,, and how do you test a gauge to know what pressure reading it is showing? These old gauges don't have any mea!
>  ningful numbers on them to use as a reference. So if the dial comes halfway up and it pointing straight up and down, is that 5lbs, 7.5lbs, or maybe 12.5lbs.?
>
> bobcurrie 
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