This document provides instructions for assembling and disassembling parts of a 320 GC Excavator model BR4, including the travel motor and final drive. It lists the required tools and parts and includes illustrations showing the assembly and disassembly steps. The travel motor assembly instructions involve installing positioning rods and lifting eyes to hold parts in place while assembling. The final drive disassembly removes the final drive housing from the excavator and provides instructions for using link brackets and forcing screws to separate connected parts.