This manual pertains to the OM Series mdX and mdXac forklift trucks, representing modern industrial material handling equipment. These electric-powered vehicles are engineered for efficiency and reliability, with the 'mdXac' designation strongly suggesting advanced AC motor technology for improved performance and control. The series is designed to compete in the demanding forklift market, offering capabilities that may include compact designs for Very Narrow Aisle (VNA) applications, advanced electronic controls, and sophisticated hydraulic systems. This Service Repair Workshop Manual provides comprehensive guidance for the maintenance, troubleshooting, and repair of the OM Series mdX and mdXac forklift trucks. It covers a wide array of systems, including the electric powertrain, drive axle, driver's compartment, steering, guidance systems (mechanical, inductive), brakes, hydraulics, lift mast, and various attachments and accessories. The manual is structured to assist a broad audience, from owners to professional technicians, by offering detailed diagnostic procedures, preventive maintenance schedules, technical specifications, and safety guidelines, all aimed at ensuring the longevity and optimal performance of the equipment.