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 of the assembly and disassembly procedures. The travel motor assembly instructions involve installing positioning rods and lifting eyes to hold parts in place while bolts are tightened. The final drive disassembly involves removing the final drive housing from the excavator and using link brackets and forcing screws to separate connected components.