8N 3 point hitch adjustment

My 3 point will not stay in the "up" position once the motor or the P.T.O. are turned off. Can this be adjusted? Is there a valve/part that is not difficult to replace? It is awkward to use the post hole digger and other implements in this condition.
 
As outlined in the FO4 manual and many posts on this site, remove the right side inspection port and check for leaks,
especially from the ram cylinder which is attached to the top cover. Then report back.
 

You have stated that this subject has been covered many times on this forum. What technique do I use to find what you are referring to? FO4 manual and the previous discussions? Is there a topic "index" or "search tool"? What key words do you suggest?
 

Thanks, this was helpful.

16. Got a problem with the lift arms dropping with the tractor off or the clutch depressed? You probably have a worn lift cylinder or piston (or both), a blown top cover gasket or a leaky pressure relief valve. Take the inspection plate with the dipstick off. Lift a heavy implement & look inside with the tractor running & the PTO engaged to see if you notice oil running from the top cover. If oil is running steadily from the top cover the chances are the lift cylinder needs to be rebuilt. It's less likely, but a possibility, that the top cover gasket is bad. (It's very difficult to detect the exact source of the oil leaking inside of the top cover while looking through the inspection port). If no oil is running down from the top cover, look at the rear of the pump in the oil with the load still on it and see if you notice turbulence in the bottom. (Some movement of oil will be normal with the PTO shaft turning). You could have a weak pressure relief valve which will be detected by turbulence in the oil. To check for a slow leak, lift a heavy implement, turn the tractor off & put a 1/2 inch clear plastic hose on the end of the valve & stick the other end of the hose through the inspection port. With pressure in the pump, a bad valve will likely show some fluid in the hose.
 

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