oil pressure gauge

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staninlowerAL
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oil pressure gauge

Postby staninlowerAL » Fri Jan 08, 2016 9:18 pm

I noticed that TC 37F Parts Manual lists several different part numbers for the oil pressure gauge which I assume is for different year model tractors. The only ones that I have actually seen have a "range" rather than numbers on the face so anyone care to explain the difference and when used? I understand the "sending unit" and its function as well as that it was used with the oil pressure indicator light like the Numbered Series LoBoys. Thanks. Stan
oil pressure.JPG

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bob in CT
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Re: oil pressure gauge

Postby bob in CT » Fri Jan 08, 2016 9:39 pm

Just a guess, the later tractors with higher RPM also had higher oil pressure at maximum engine speed.

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Glen
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Re: oil pressure gauge

Postby Glen » Sat Jan 09, 2016 2:43 am

Hi,
TM Tractor says there were 4 different oil gauges IH used on Cubs. Here are pics below, at the top of the page. IH changed the style over the years.
My friend had a 1955 Cub, it had the 2nd gauge, he put one of the 4th ones on it, he didn't like it too well, the hand didn't go up much on a gauge made for 75 lbs. At the time, we couldn't find one of the older style, that was before the internet was around. :)

http://www.tmtractor.com/new/en/en_001newparts.htm

staninlowerAL
5+ Years
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Posts: 3377
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '53 MM BG (offset), (2) '49 Avery V's, '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: oil pressure gauge

Postby staninlowerAL » Sat Jan 09, 2016 7:34 am

Glen wrote: My friend had a 1955 Cub, it had the 2nd gauge, he put one of the 4th ones on it, he didn't like it too well, the hand didn't go up much on a gauge made for 75 lbs.

Thanks. This confirms my suspicion that the gauges were calibrated for different pressure ranges. I suspect that the early one was probably 0-30 while the later one shows 0-75. I didn't think to look at the TM offering availability. Stan

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John *.?-!.* cub owner
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Re: oil pressure gauge

Postby John *.?-!.* cub owner » Sat Jan 09, 2016 2:55 pm

Since cubs had a 35 pound pressure relief on the lubricating system, I suspect the 75 was made for different tractors than the cub, but it was cheaper to make the same gauge and simply use a different adapter.
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