This document provides installation instructions for a governor in Caterpillar excavator models 320, 320L, 320N and 320S. It outlines 11 steps to install the governor, including lubricating O-rings, placing the governor in position on the engine, installing clips and tubes, and checking the fuel setting adjustment once complete. Required tools include governor pliers and pins from the governor tool group. Proper cleaning and lubrication of parts is emphasized to prevent contamination.