The Hyster B453, encompassing the W30ZA and W40ZA models, is a robust Class 3 Electric Motor Hand Truck designed for demanding industrial environments. These units offer nominal capacities of 3000 lbs for the W30ZA and 4000 lbs for the W40ZA, showcasing their capability in material handling operations. Engineered for reliability and efficiency, the B453 series features a powerful DC electric motor and advanced ZAPI controllers, ensuring optimal performance and control. Its construction emphasizes durability, with a focus on a strong frame, precise steering, and a master drive unit built to withstand rigorous use. This comprehensive Service Repair Factory Manual in English provides essential information for the maintenance and repair of your Hyster B453 (W30ZA / W40ZA) hand truck. It covers a wide array of critical systems and components, including brakes, the electrical system, industrial batteries, lift and tilt cylinders, mast systems, and the walkie high lift hydraulic system. Detailed guidance on periodic maintenance, DC motor maintenance, and troubleshooting is included, alongside specifications and diagrams. This manual is an indispensable resource for owners, technicians, and mechanics seeking to ensure the continued optimal performance and longevity of their equipment.