James: Before you tear into that hydraulic system, one question, what position were the hydraulic levers in when this happened? If the levers were all the way forward or all the way to rear, it may be that the hydraulic levers are out of sinc with rochshafts. If that is the case it will get hot very quickly. Go back start the tractor, with with hydraulic levers in mid position. With tractor idling, slowly move the lever (one lever at a time) completely forward, listen for the tractor to start laboring. If that doesn't happen try the rear position of same lever. Then do the same with the other lever. What you are trying to determine here is whether rock shaft completes it's stroke as the lever hit it's stop. You will here it start to labor engine if rock shaft reaches end of stroke and you still have lever travel left. You can adjust linkage to each lever to correct this. Your pto is probably rusted in the shift mechanism, if tractor has been parked for awhile. Usually these will free up with use as oil gets circulated through transmission. Charlie gave you the money fix, I on the otherhand am a Scotsman. He may well be right, but I always try the cheap fix first. It costs very little money to listen and adjust accordingly. Good luck, and come back if you have queations.
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