I have a neighbour with a 135 Massey with a loader. Between your legs, on the top of the rear axle hydraulic cover, there is a valve with a 2"lever that rotates about 90 degrees up and down, one way operates the 3 point, the other way runs the loader. If I take the handle off and remove a snap ring the rotating spool comes out and there is a o ring between the spool and the housing that leaks oil quite badly. I have tried replacing it with a o ring from a variety pack but they either leak or don't last long, so I am guessing that it is a special sized Massey Ferguson part. I couldn't find that valve on the Agco/Massey Ferguson parts site. My "local" dealer is almost an hour away and requires crossing the boarder, so I wanted to know what was available before I went to see him. Any thoughts, suggestions, or ideas appreciated.
Thanks
Alf Roberts
 
Here is an alternative type of valve. There are O rings inside the body. Normally when the valve starts to leak oil it is due to the spool or the body being worn. The O rings do very little to act as seals for the oil they are mainly dust seals. If the oil loss is significant a new valve is frequently the answer.

DavidP, South Wales
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