This hydraulic valve insert controls the flow and pressure within the hydraulic system of the host machine. It is a precision-ground spool that directs oil to the actuators based on pilot pressure signals. A worn or contaminated insert causes erratic implement response and pressure drift, reducing harvesting efficiency. The original component is machined to the same internal clearance as the valve housing, ensuring the correct metering slots are maintained for proper spool timing. On reinstallation, ensure the bore is clean and free of debris to prevent binding.