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Harry Ferguson Tractors Discussion Forum
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TO 20 Oil pressure question

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davewavey

10-01-2006 19:18:53




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My TO 20 is running great, however I am concerned about its elevated oil pressure. It isnt ungodly high, but at 3/4 to full throttle it has about 55-60 psi. At low idle it gives out about 40 psi. Will this be ok? Should I even mess with it? Atleast I know my engine is surely getting lubed, as I took the valve cover off, I noticed the valvetrain was evenly and FULLY coated in oil, which is good. Also, the oil is clean, no water, no metal filings or anything. Runs quiet as a purring kitten, no knocking or ticking whatsoever. I am thinking my oil pressure is best left well alone, but maybe not,what do you guys think?

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gerard

10-02-2006 11:31:34




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 Re: TO 20 Oil pressure question in reply to davewavey, 10-01-2006 19:18:53  
When faced with an oil pressure issues, always try another gauge to verify. Otherwise, assuming pressure doesn't continue to rise with revs (indicating a stuck pressure release valve) I'd follow the advice below & leave alone. My TE has always run around 50psi, dropping to around 35 when really hot (at working revs). I use 20/50.



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Jerry/MT

10-02-2006 11:01:50




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 Re: TO 20 Oil pressure question in reply to davewavey, 10-01-2006 19:18:53  
I'm not trying to be a contrarian but that high of an oil pressure usually means that( given you are using the proper weight oil) you have a stuck pressure relief valve in the lube system. Your pressure should be between 25-30 psi. It is not an indication of a "tight engine" nor should it be considered a good thing. The oil is used for cooling components as awell as lubricating them. My TO-30 which has the same basic oiling system, operates, hot or cold, idle or max rpm at 27 -28 psi.
To get the proper oil flow, you should be operating at the pressure range specified by the owners manual. You can fix the high pressure problem by dropping the pan and servicing the pressure relief valve. Either it is stuck due to sludge/dirt or someone has shimmed the spring up too much.

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John (UK)

10-02-2006 06:01:46




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 Re: TO 20 Oil pressure question in reply to davewavey, 10-01-2006 19:18:53  
That oil pressure is excellent for a Continental, they very often run much lower than that. You have nothing to worry about with that, just leave it alone but keep the oil and filter changed.



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Al in BC

10-01-2006 19:32:30




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 Re: TO 20 Oil pressure question in reply to davewavey, 10-01-2006 19:18:53  
Dave.
Had the same scenario on my 55 TEA 20-85.

60lbs when running and 40lbs at idle.

Took a reading with another guage and got the same reading.

Lets leave well enuf alone.

My 2 cts worth.

Al in BC



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