Thread: Class ares 567 atz transmission problem

You're not by chance touching the brakes at all?

Some modes flick them into 2WD when a single brake is applied, or vice cersa, they engage 4WD when the brakes are applied.

Try touching the brakes while it's doing it if you're not already.

I vaguely remember a tractor I drove once that would flick into 2WD when the 3pt linkage was raised, it was setup for plowing so allowed a tight turn on the headlands when the implement was raised. Would've been a JD though.