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JD B oil relief valve -- info

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Darryl

08-08-2001 09:32:55

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I saw a '51 JD B advertised for sale. Talked to the seller. He's determined that the oil relief valve needs replaced. My question is, what does it take to replace the valve? How involved is the process? Are there any special tools or techniques required?

Thanks!

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Clooney

08-08-2001 13:01:43

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Re: JD B oil relief valve -- info in reply to Darryl, 08-08-2001 09:32:55

Darryl, I question if you are getting the straight story. About the only way the person could determine that the oil pressure (relief spring) is broken or the oil pressure relief valve is stuck or has a problem is to take the crankcase cover off & go down into the crankcase & take a look. If he was that far into it it would have been extremely easy to free the valve or replace the spring. Make sure he isn't trying to sell you a tractor with low oil pressure & just claiming the oil pressure relief valve is malfunctioning. To answer your question, once the crankcase cover is off the valve or leaf spring for oil pressure control is very easy to replace. if the crankcase cover doesn't show signs of being removed lately I would question him adamantly on how he knows the oil pressure relief is malfunctioning. I don't know if the spring (the most likely source of a failure, if there is one) is still available from Deere but if not it shouldn't be hard to find a used one.

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Darryl

08-08-2001 15:40:57

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Re: Re: JD B oil relief valve -- info in reply to Clooney , 08-08-2001 13:01:43

Thanks, Clooney.

He explained that there was no oil pressure when he went to start it after buying it (had to buy it in order to get another tractor he wanted). He said the coupler for the oil pump shaft is not snapped, and that the relief valve was the culprit. Would he have to have the crankcase cover off to know the coupler is okay? If not, I doubt from what he said that he took the crankcase cover off.

Unfortunately, I'm not familiar with the mechanics of a JD B, but what I've read indicates that a lack of oil pressure could be caused by several different things, many very simple. I don't want to buy a dud, and the tractor is a about 350 miles away.

I'm looking for (and appreciative of) good feedback and information, and I know there are some good people who provide that on this site.

Here's the add for the tractor:

1951 John Deer B

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Clooney

08-08-2001 15:55:41

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Re: Re: Re: JD B oil relief valve -- info in reply to Darryl, 08-08-2001 15:40:57

Darryl, I usually don't comment on price but will make an exception in this case. For $650.00 you can't go wrong. Unless there is a little oil pressure or he pulled the bottom oil pump cover he probably would have had to pull the crankcase cover to see if the drive coupling is ok.

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Darryl

08-08-2001 10:05:41

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Re: JD B oil relief valve -- info in reply to Darryl, 08-08-2001 09:32:55

Oh yeah, how readily available would a replacement valve be?

Thanks.

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