Early M hydraulic problem

Chris Klein · Jul 10, 2008

I am adding a 3 point on an early M using the belly pump to feed the Valve. I have two fittings on the left and one on the right but all 3 are pressurized when you engage the pump. I need to know where the return line goes because I have had 2 people tell me that it is the fitting on the right but if I use that one the system just locks pressure on and it will not move the cylinder until the pump is disengaged. If I cap that line off and run the return into the fill tube everything works fine. Any information would be greatly appreciated.

TractormanNC · Jul 10, 2008

Put a tee in the fill tube and connect the return line there. If you have trouble with oil splashingout of the filler cap, then put a tee in the drain hole and hook the return line there.

glennster · Jul 10, 2008

all three supply hydraulic pressure, the rear was for a rear mount cultivator. there was a restrictor on the rear cultivator cylinder that delayed the rear drop of the cultivator. you can plumb your return line to either the fill pipe with a tee or the way i did mine was to use a tee in the lower drain plug on the pump. use one end of the tee for the return, a small pipe nipple in the center of the tee and cap the other end of the tee. that way you still have a drain plug. also, on the control rod for the pump, i welded a small section of 5/16 steel rod so it has a nub like the other one on the rod, position it so it will hold the rod in the full on position.

Mike L · Jul 10, 2008

Name: Mike L (Reserved Name)
E-Mail:
Subject: Re: Early M hydraulic problem
In Reply to: Early M hydraulic problem posted by chris klein on July 10, 2008 at 13:36:03:
Body of Message:

You can get a breather plug that goes in the cylinder where the return hoes goes. This will turn your twoway cylinder into a oneway. there
will be no need in all that extra pluming.
I got one at tractor supply cost less than 5 bucks. looks like a pipe plug with a 1/8 hole in
the side of it.

tcanthonyii · Jul 10, 2008

Do you have any pictures of that 3 point?

Thanks

T.C.

Early M hydraulic problem

Chris Klein

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TractormanNC

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glennster

Well-known Member

Mike L

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tcanthonyii

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