By using various feedback data on a sprayer system, such as sensed positions of power actuators for turning wheels, an onboard logic controller can be used to fine tune parameters of the steering system in an automatic calibration process. In one aspect, a controller can send an electrical signal to a coil of a hydraulic pump to fully extend a power actuator for turning a wheel in a first direction, then incrementally adjust the signal until a change in position of the power actuator is determined, thereby obtaining a precise magnitude for commanding a full extension of the power actuator. Similarly, the controller can change the signal to fully retract the power actuator for turning the wheel in a second direction, then incrementally adjust the signal until a change in position of the power actuator is determined, thereby obtaining a precise magnitude for commanding a full retraction of the power actuator.
