The document provides instructions for disassembling and assembling a priority valve and steering unit. It begins with identifying the key parts of each system. It then details how to carefully disassemble each component, clean all parts, inspect for wear, and lubricate before reassembly. Precise steps are outlined for reinstalling each part in the proper orientation and order. Torque specifications are provided for securely fastening parts. Finally, basic troubleshooting tips are given.