[Farmall] oil pressure

[farmallgray at aol.com]

Bob,

When you check with the guy who rebuilds them, see if he can make (or get)?new face plates for ones that work and just look ugly. I have a few that work but the faces are faded or dirty or rusty. I have found gauge rebuilders who will do it but the cost is around $150 per gauge. You would think that if a bunch of us need them, they could produce a larger quantity of faces a little cheaper.

BTW, Hank and I wrote some info about oil pressure and gauges in chapter 1 of the F-series book.

Todd


-----Original Message-----
From: Bob Currie <tracturs at att.net>
To: Farmall List <Farmall at lists.antique-tractor.com>
Sent: Thu, 29 Nov 2007 10:06 pm
Subject: [Farmall] oil pressure




I'm still messing with this oil pressure reading situation and after digesting 
all that good stuff you folks said last week, I went out and bought a 0-15 psi 
guage that reads in tenths. I took it and hooked it into my shops air system so 
I could read it in parallel with the regulators pressure gauge I have in that 
air system. I'm ok with how it measures, (accurate within one tenth of a pound) 
so I put in on the 1925 10-20 with no oil filter, and then I ran it on my 1929 
Regular with no oil filter. Both tractors have good starting compression, and 
run fine, so even though I have not rebuilt the motors, I'm assuming they are in 
good condtion and their oiling systems are working fine.  I got a pressure range 
on the McCormick Deering 10-20 of 2.1 psi at warm/idle, and the highest was 5.3 
psi at high rpms/cold. When I measured the  Farmall Regular I got about the same 
spread, but a little higher on the gauge. 3.0 at warm/idle and 6.1 at high rpms. 
So that confirms for me what you!
  all said regarding the type of pressure you can expect from this era of IH 
tractors, and explains why the original equipment oil gauges came in a four lb 
gauge (16924H) or a ten lb gauge (13093D)..And also explains why some of the 
reproduction guages that are available today might be a little misleading on the 
readings you'll find from your tractor, or might be the wrong gauge altogether. 
For example, the correct gauge for a f-12/14 or the lettered series tractors 
will read way off for the old grey ones were talking about here. All I can find 
so far is that the lowest reproduction ones you can get are 0-15 psi..I'm 
working on trying to find somebody who can re calibrate these after market 
gauges down to 8 or 10psi. There is a guy in northern WI who tells me he can 
rebuild most of them and can get parts to do so from Rochester. We'll see. And 
all this gobbily gook is because the present oil pressure gauge on the tractor 
is not rebuildable. The End.

Bob Currie
Greenwood, CA
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