The Allison HT 750 DR Service Repair Manual is a comprehensive resource for anyone involved in the repair and maintenance of Allison HT 750 DR automatic transmissions. This detailed manual provides a wealth of information, covering all aspects of the transmission from general operation and preventative maintenance to detailed overhaul procedures. It guides you through the complete process, from disassembly and rebuild of subassemblies to final assembly.

Within its pages, you'll find step-by-step instructions with clear illustrations and cross-sectional views, making each procedure easy to understand and follow. The manual delves into the intricacies of each major component, including the splitter ring gear, output bearing retainer, transmission rear housing, planetary carriers for reverse, high-intermediate, low, and intermediate gears, sun gear and hub, high-range clutch and drum, transmission main housing, and splitter shaft. You'll also find detailed procedures for essential tasks like transmission rear section stack and runout checks, complete transmission assembly, and final transmission assembly. Furthermore, the manual provides valuable general information, including wear limits and spring data for all components, ensuring you have the necessary information for accurate and successful repair. This manual is an essential tool for mechanics, technicians, and DIY enthusiasts who want to perform repairs and maintenance on their Allison HT 750 DR transmissions.

The Allison Transmission HT 750 DR (DB) (RS) is a heavy-duty automatic transmission designed for demanding applications in commercial vehicles, particularly in the off-highway sector. The HT 750 series is renowned for its durability, reliability, and high torque capacity, making it an ideal choice for trucks, buses, construction equipment, and other heavy-duty machinery. The "DR" designation indicates that the transmission is equipped with a direct-drive output shaft, while the "DB" denotes a dual-brake system. The "RS" suffix signifies a rear-steer configuration, indicating that the transmission is designed to be used in vehicles where the rear axles are steered.

The Allison HT 750 DR (DB) (RS) transmission utilizes a robust design with a planetary gear set, multiple clutches, and a hydraulic control system to provide smooth and efficient power transfer. It features advanced technologies such as electronic controls, a torque converter with a lockup clutch, and a range of gear ratios to optimize performance for various operating conditions. The dual-brake system provides additional braking capability, enhancing safety and control. The rear-steer configuration allows for greater maneuverability in tight spaces or when operating in challenging terrain. These features make the Allison HT 750 DR (DB) (RS) a highly reliable and versatile transmission for heavy-duty applications, ensuring optimal performance and productivity.