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Massey Harris & Massey Ferguson Tractors Discussion Forum

MF-35 Oil Pressure psi

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maxwell99

05-03-2008 18:25:50

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Neighbor has a MF-35, about a 1960 model with a Z134 gas engine.

The orginal oil gauge has been replaced on the tractor with a gauge that reads in psi.

His oil pressure runs about 20-23 psi.

Today, he ask me if this was normal oil pressure for this tractor.

I have a TO-35, 1957 model, but my tractor has the orginal oil guage, it reads low, normal, high, so I do not know the normal reading in psi.

Does anyone know the normal oil pressure (psi) for the 1960, MF 35?

Thanks,

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BRH

05-05-2008 13:43:47

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Re: MF-35 Oil Pressure psi in reply to maxwell99, 05-03-2008 18:25:50

I have a MF 40B that has 40+ psi for about 20 minutes run time, then drops to 3-4 psi. I changed the PSI gauge with no change, and now just work the loader/box blade for short times.....
I"ve had the tractor over 20 years and it runs great. This started about 12 years ago.
Any ideal what is going on?

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Jerry/MT

05-04-2008 11:11:23

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Re: MF-35 Oil Pressure psi in reply to maxwell99, 05-03-2008 18:25:50

The owners manual or shop manual should have this info for you or you mgiht do an aarchive check. While i don"t know the spec values for the Z134,but its "sister engines" are the Z120/Z129 series, they have a pressure of 25-30 psi as normal with no less than 15 psi and 400 engine rpm at operating temperature. Based on this I"d say that 20-23 was acceptable.

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maxwell99

05-04-2008 16:28:16

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Re: MF-35 Oil Pressure psi in reply to Jerry/MT, 05-04-2008 11:11:23

Thanks, Jerry,

I will pass the infomation along to him that he is ok on oil pressure.

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