My JD110TLB (basically a 4610) has had steering noise and steering "pause" issues since it was brand new. The problem turned out to be in incorrectly routed hyd hoses from the steering motor to the power steering cylinder.
The hoses were criss-crossed at the point where they drop down from the engine compartment and unduly restricted the hydraulic flow to the steering cylinder.
'Course they rubbed each other and rubbed on the engine frame too. The pump and/or the steering motor never failed but the wire mesh on the hoses started peeking out from the rub spots. After changing out the hoses, my steering issues - disappeared!!!
AKfish
