It has been a long time since my days at the wheel of an H-P 70 and an Oliver 70 (thanks dad-RIP).

We didn't do a whole lot of PTO work in our grain growing operation, but we did use the pipe mount cultivators.

Here's my memory problem...did we have to engage the PTO to use the mechanical lift system for the cultivators?

Back to the thread-might the PTO lockup problem be related to a malfunction in the lift system, if the tractor is so equipped?