Mr. Bush,
I am not sure this is your problem, but I will relate a situation we had a few years back. Dad was disking with my 1135 when I noticed the cylinder on the right arm of the 3 point had blown the seal. We shut down right there because of Hydraulic Oil loss, and called our dealer.
During the conversation I was told that Massey Ferguson had incorporated in their design of the 3 point system the ability to lock the 3 point arms in the up position, which also eliminated the flow of hydraulic oil to the arms, so we could continue farming until they arrived to rebuild the cylinder seal.
To lock the 3 point arms up in the up position place them all the way up. Now standing behind the tractor facing it, on the top of the left 3 point arm on the inside there was a cast knob. By turning this knob one quarter (1/4) turn, you will lock, or unlock the 3 point arms. Ours was very stiff from lack of use, so we used either a channel locks, or pipe wrench to turn the cast knob. I believe the knob rotates in a continuous 360 degree system, with each quarter turn being flow, or no flow. Hope this helps..... Tim Pace