Seeking help with my JD 60 rockshaft. Used all winter with a 3 pt bush hog and didn't sag at all. Took the 3 pt off this summer for mounting my no. 5 mower and just put it back on this week. Now the 3pt raises but immediately drops. However my hydraulics still work fine. I used it with my 1209 haybine and it lifts and holds in place. I checked the powrtrol level and it has more than enough oil and I checked my transmission level to see if it was gaining oil from a blown out rockshaft gasket but it looks normal (though there was some froth on the surface). Should I be thinking a check valve in the powrtrol or a oil ring on the rockshaft cylinder or something else completely? Thanks,
Pete
Pete