[AT] High oil pressure a bad thing?

[Dudley Rupert]

Dean,

You asked, "So what's the harm of high oil pressure?  If it's not a symptom
of clogged arteries, so to speak ..."

If by high oil pressure you mean a high reading on the pressure gauge and
you KNOW the tractor has no clogged oil arteries then probably none as it's
likely a faulty gauge that is giving an erroneously high reading.

But if by high oil pressure you really do mean high oil pressure (as in
you've measured it with a couple of different gauges both of which give the
same high reading) then I would suspect that the tractor might have a
clogged oil artery somewhere.

Normal M oil pressure at run speed is 60-70 PSI.  If your' gauge is reading
much higher I think I would want to test with a second/known good gauge.

Dudley
Snohomish, Washington





-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com]On Behalf Of Dean Vinson
Sent: Thursday, June 21, 2007 7:05 PM
To: 'Antique tractor email discussion group'
Subject: [AT] High oil pressure a bad thing?

There's a letter to "Mr. Thinker" in the June issue of Green Magazine about
a tractor with high oil pressure.   That caught my attention since my
Farmall M pressure gauge always reads high, and it was the same on the Super
M I had several years ago.  The response from Mr. Thinker talks about how to
adjust the oil pump relief valve to get the pressure back in the normal
range, but doesn't say anything about cleaning or checking or otherwise
servicing anything else in the engine.

So what's the harm of high oil pressure?  If it's not a symptom of clogged
arteries, so to speak, or some other bad thing that ought to be fixed before
it does real damage, what difference does it make if the gauge reads way up
at the high side?

Dean Vinson
Dayton, Ohio
www.vinsonfarm.net





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