JD CT322 Left stick no neutral

[Gdaddy]

Just picked up a CT322 and the left control cannot find neutral and wants to move constantly and will even shut the machine off with the parking brake on. Any ideas??? I was thinking and was informed the linkage could need adjusting. Any thoughts appreciated, thanks

 

[SkidsDeereMech]

Raise cab and determine if you have a broken spring on the centering plate mech on top of the pump connected to the left side linkage. Ntext check and see if you have large amounts of play on the three brass bushings on the plate. One on the front with the spring and two in the back with the little rods through them. More than likeley your problem is the grey pot metal linkage arm attached to the swash plate on the top of the hst pump. Grey arm thing under the plate. The arm attaches to the swash inside the pump if this "arm" is worn the unit will not sit in neutral. It will jump fwd or rev and stall the machine if the park brake is applied. If its a unidirectional creep you only need a tracking adjustment.