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JD A's oil pressure...what could be wrong?

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mike

11-17-2002 09:56:17




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I found an A that was parked for couple of years in a shed but when they restarted it they had no oil pressure. Could it need to be primed? I never have had a JD before so any info would help. Thanks




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Seamo

11-17-2002 11:28:29




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 Re: JD A's oil pressure...what could be wrong? in reply to mike, 11-17-2002 09:56:17  
We need to know how old or what model. The early 34&35 "A" had the oil pump behind the flywheel they could loose prime. The other "A" s had a built in safety feature on the oil pump drive it was a square coupler.If you got moisture in the btm. of your crankase it would split the coupler first before you would tear up the pump or the drive gear. Post back we can help you.



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mike

11-18-2002 14:06:00




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 Re: Re: JD A's oil pressure...what could be wrong? in reply to Seamo, 11-17-2002 11:28:29  
well i know the tractor is a later model because it is a styled one. I don't know the year for sure, and I don't have the serial number sorry! All he really told me was that it had sat and when he restarted it he couldn't get it to come back up on the gauge, he said the gauge must work though because it goes up and then comes right back down. I guess thats all I know, I was hoping it would be something simple but maybe it needs a whole overhaul. Thanks and let me know what you think.

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Dave K

11-19-2002 11:50:40




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 Re: Re: Re: JD A's oil pressure...what could be wrong? in reply to mike, 11-18-2002 14:06:00  
I have a 1948 A that would have and lose oil pressure imtermittently. Found the oil pump intake screen full of crud. Screen did not "look" dirty by shining a light into the crankcase and looking at it. After removing the screen I could see it was almost totally plugged by sludge caked in the screen itself. Also there might be a problem with pressure coming up, opening the bypass or relief valve and then it sticking open.

Dave

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