This manual covers the Case 988 & 988 Plus Hydraulic Excavator, a robust machine designed for demanding construction and excavation tasks. Known for its engineering quality and reliability, these excavators are built to provide efficient performance and durability in various work environments. This documentation aims to provide comprehensive information for owners and operators of this versatile equipment. The purpose of this Shop Service Repair Manual is to offer detailed guidance on the maintenance, repair, and operation of the Case 988 & 988 Plus Hydraulic Excavator. It includes extensive information on engine service, fuel and cooling systems, transmission, electrical systems, chassis and body, operator controls, and more. Safety guidelines, troubleshooting procedures, and technical specifications are also thoroughly covered, ensuring that users can effectively maintain and operate their equipment with confidence and efficiency.