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9n oil pres.

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Ron

04-08-2002 07:40:30




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Does anyone know what normal oil pressure is for 9n with small oil pump. Mine has about 7 at hot idle and 23 at high rpm hot.




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Upper Michigan

04-08-2002 10:40:53




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 Re: 9n oil pres. in reply to Ron, 04-08-2002 07:40:30  
My 1940 9N's oil pressure when cold is right to the top of the gauge. When hot at idle, it's in the middle and when running hot it's about 3/4 of the way to the top. I use 10/30 oil summer and winter and have been for 25 years, since it was overhauled. I do remember the mechanic that did the overhaul job saying he had put in a high pressure pump. Your oil pressure will also depend on the viscosity of your oil. Keep it high. Ron

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Jim/41_9N

04-08-2002 09:04:06




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 Re: 9n oil pres. in reply to Ron, 04-08-2002 07:40:30  
My 41 9N runs about 40 psi when I first start it. After running a bit it drops to about 25 psi. Haven't recently rebuilt any of this tractor. It does run great though, no burning oil, plenty of power etc.



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John,PA

04-08-2002 08:27:10




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 Re: 9n oil pres. in reply to Ron, 04-08-2002 07:40:30  
I'd say that your readings are OK. Mine has been operating in this range for the past 30 yrs. or so.



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