3-point hitch drops

Welcome to GTT,
Just to be clear, is it the 3PH alone that dropping by itself, or is the rockshaft lever sliding with no resistance and allowing the 3PH to move?

What tractor model do you have?

I have the 1025R, it is the lever sliding with no resistance

There is a 16 mm bolt located about a foot inside the 1 o'clock position of the edge of the right rear tire, at the base of the 3 point lever. It is almost a straight shot in across the the tire tread, with just a bit of downward angle. Try tightening this bolt just a little. Too much and the lever gets hard to move.

Hope that this bolt tightening does the job, it has worked for me twice. I cannot explain why the bolt gets loose.

Oops, the answer was posted while I was typing.

That definitely fixed the issue.
I knew I joined this group for a reason, Thank you fellas, I appreciate the responses.

I had to do that with my 1025r. Been fine ever since.

rob