This pin is a force sensor that converts mechanical load in the tractor’s three-point linkage into an electrical signal for the electronic draft control system. It mounts in the lower link or top link assembly and measures the tensile or compressive force applied during tillage. The signal is sent to the control unit, which adjusts implement depth to maintain consistent draft load. A failed or inaccurate sensor causes erratic depth response or a fault code in the system. This original part is machined to the same load rating and electrical output curve as the factory-installed component, so the control unit reads the correct voltage-to-force relationship without recalibration.