This manual covers the Caterpillar EP20K PAC, EP25K PAC, EP30K PAC, and EP35K PAC Forklift Trucks, part of the PAC series. These 3-wheel electric counterbalance forklifts are engineered for reliability and efficiency in various material handling applications. Featuring AC electric motors and a 48V electrical system, these models offer robust performance with lift capacities ranging from 2000 kg to 3500 kg. Notable features include duplex or triplex masts, solid pneumatic tires, a regenerative braking system, and electric power steering, all designed to enhance operational productivity and operator comfort within an ergonomic compartment. The purpose of this service manual is to provide comprehensive information for the maintenance, repair, and technical understanding of these Caterpillar forklift trucks. It details essential procedures, technical specifications, and troubleshooting guidance necessary for optimal performance and longevity. Owners, technicians, and mechanics will find detailed instructions on scheduled maintenance, component identification, and system diagnostics, ensuring the forklifts operate safely and efficiently. This document serves as a critical resource for all aspects of vehicle upkeep.