This document provides removal and installation instructions for various components of the actuator motor and climate control systems on Caterpillar 320C and 320C L excavator models, including: 1) Removal and installation procedures for several actuator motors that control air dampers and climate functions. 2) Removal and installation of the fan speed control component. 3) Removal and installation of the ambient air temperature sensor. The document contains detailed step-by-step instructions with accompanying illustrations for each procedure. Safety precautions and proper installation techniques are emphasized.