1968 Case 530 3pt. Eratic Movement

CaseChev

Member
I was mowing with a finish mower on the 3pt. when I looked back and noticed the mower seemed lower than what I set and was scalping the grass. I tried to raise it up and it would not raise.
Fluid level in hydraulics OK and no extra fluid in rear end. Tractor sat for several weeks and when I started up, the mower raised and 3pt. operated great.
I now notice that I can raise mower all the way up and lower it....then when I raise it again, it does not go quite as high as before. Then I lower it somewhat and when I raise it, it stops even lower.
Would appreciate any suggestions
 
Thanks for the suggestion. The stop is solidly tightened and I even have Sharpie marks on it for different equipment settings and it has not moved in relation to those marks.
 
Put more hyd. oil in the tractor and try it. It is a posibility that the pickup tube is sucking air also. There is no screen on the suction tube as sugested, unless it has been apart at a dealer and they installed a home made screen on the tube which most did, when they had the pump off.
Loren
 

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