This manual covers the Hyster D024 forklift, including the S135FT and S155FT model variants. Engineered for demanding operational environments, Hyster forklifts are recognized for their robust construction and reliable performance. This specific model is designed to meet the rigorous requirements of material handling, offering efficient operation and durability. While specific production years are not detailed, the engineering principles behind these machines emphasize longevity and serviceability, ensuring consistent productivity in industrial settings. This comprehensive Service Repair Workshop Manual provides detailed instructions for the maintenance and repair of your Hyster forklift. It encompasses a wide range of topics, including routine maintenance procedures, detailed troubleshooting guides, diagnostic trouble codes, and repair procedures for critical systems such as the drivetrain, hydraulics, electrical system, fuel system, cooling system, and brake system. The manual also includes information on chassis and frame repair, steering and drive axle repair, differential assembly, mast repair, and cylinder repair. With clear instructions and high-quality diagrams, this manual is an essential resource for both do-it-yourself owners and experienced mechanics seeking to maintain their equipment in optimal condition.