massey ferg. 135 diesel

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massey ferg. 135 diesel

Darin Alguire
bare with me. when I am using the bucket but, have a implement attached to the 3 pt. hitch I cannot keep the implement from lowering unless I direct hydralic pressure via the valve located behind the gear shifter back the 3 p.h. position then draft up on the selector to my right. Once up I then redirect my hydralic pressure back to the bucket. Why does my 3 pt. hitch continue to lower. (time frame 5 minutes). Do I have an O ring somewhere that is allowing the hydralic fluid to slip by when not under constant pressure?


Big Dean Hi Darin
I am assuming you have one of the two spool MF diverter valves on the liftcover in front of the seat where the left spool acts as a diverter valve where when it is pulled back the three lift works and when it is in the center position the right lever can be used to operate a remote cylinder like a loader. If that is what you have when the left lever is in the center position the three point lift cylinder is isolated from the rest of the system if it leaks down when the valve is in the center then the lift cylinder is leaking the cylinder probably has bad rings and my guess it also has scores in the cylinder wall. Now and then you will run across one of those old valves the spools are wore enough that they will let it leak off around the spool.
To check the lift cylinder for leaks remove the access plate on the right side of the rear center housing it is the plate with the dipstick and response lever in it. Raise something on the three point look in the access hole. If the lift cylinder is leaking oil will be running down from the top where the lift cylinder is located. Hope this helps If I can be of further help email me.

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