tc54h jerky turning

cold or warm engine temp when turning steering wheel at any speed (hand speed )other than very slow machine has a jerky motion . most noticed during slow speed maneuvers when loading or tight quarters
machine has 6400 hrs its done this for last 1000 hrs and ive done 2 filter changes nor maint.
i bought mach. at 5400 hrs.
its live-able but bugs me.
i.m assuming theirs a pressure flow sensing valve thats out of wack and maybe a simple adjustment or fix before a more expensive repair is...

tc54h jerky turning

tc54h jerky turning