1) The document provides disassembly and assembly instructions for removing and installing the piston pump (hydrostatic) on a 289C2 Compact Track Loader. 2) The removal procedure requires disconnecting hoses and harness assemblies, removing mounting bolts, and using special tools to lift the pump assembly from the machine. 3) The disassembly procedure describes removing individual components like valves, cartridges, seals and bearings from the pump through 34 detailed steps.