[AT] Farmall M hydraulics

[Gene Dotson]

    A common problem with remote hydraulics is that the poppet valve in the 
remote connector will wear and and not allow the valve to remain open under 
high pressure. May have to replace the female connector. I had thst problem 
on my Case. I welded a spot on the valve to open it farther. These are the 
pionted connectors and not the ball type.

            Gene



----- Original Message ----- 
From: "john hall" <jtchall at nc.rr.com>
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Cc: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Sunday, November 14, 2010 6:37 AM
Subject: [AT] Farmall M hydraulics


> For as long as anyone can remember (I know it has been like this for at 
> least 30 years), dad's Farmall M hydraulics will sometimes "lock" and not 
> let down when the cylinder  on the towed implement is fully extended. To 
> get it to retract you have to take the load off the cylinder and then 
> sometimes loosen a fitting and let some pressure off. Usually it only 
> happens when you leave the implement lifted for a long time. I've never 
> known it to happen while in the field and lifting to turn around. I have 
> seen it do it with 4 different cylinders, so I know that's not the 
> problem, nor does it matter how heavy the machine you are lifting is. Is 
> this normal for this early hydraulic system or is something in need of 
> rebuilding?
>
> John Hall
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