The document provides instructions for disassembling and assembling the piston pump (hydrostatic) of a 242D Skid Steer Loader. The disassembly instructions list 37 steps to remove components like valves, cartridges, seals, bearings, housings and more. The assembly instructions list 36 steps to install these components in reverse order, noting specifics like torque values and using thread lock compound. Tools required are also listed.