This comprehensive service and repair manual for the Allison Transmission HT 750 DRI Automatic Models provides in-depth information on maintaining and repairing these transmissions. Designed for both experienced mechanics and those with basic mechanical knowledge, the manual offers clear and concise instructions, accompanying detailed diagrams and illustrations to guide you through every step.

The manual covers all aspects of the transmission, from routine maintenance procedures to troubleshooting complex issues. With detailed exploded views, you can easily identify and access specific components. The information is presented in a clear and logical manner, making it easy to find the information you need quickly. This manual is an invaluable resource for anyone who owns or works on Allison Transmission HT 750 DRI Automatic Models. It provides the essential knowledge and guidance to ensure your transmission operates efficiently and reliably.

The Allison Transmission HT 750 DRI Automatic is a heavy-duty, electronically-controlled automatic transmission designed specifically for demanding on- and off-highway applications. It is a robust and reliable transmission, known for its durability and ability to handle high torque and heavy loads. The HT 750 DRI utilizes a unique design with a direct-drive input, eliminating the need for a torque converter. This direct drive design contributes to its high efficiency, reducing fuel consumption and enhancing performance. The transmission features a double overdrive ratio, allowing for optimized fuel economy at highway speeds. Additionally, the HT 750 DRI incorporates advanced electronic controls, including Allison's patented Electronic Control System (ECS), which optimizes shift patterns based on vehicle load, speed, and terrain conditions. This results in smooth and efficient gear changes, enhancing both driver comfort and fuel efficiency.

The HT 750 DRI is commonly found in a variety of heavy-duty trucks, including refuse trucks, construction vehicles, and vocational trucks. Its high torque capacity and rugged design make it suitable for demanding applications involving frequent stop-and-go operation, heavy hauling, and off-road conditions. The transmission's direct drive technology ensures a smooth power delivery, while its electronic controls enhance efficiency and reduce maintenance requirements. Furthermore, the HT 750 DRI is compatible with a wide range of engines and chassis configurations, making it a versatile option for various truck manufacturers and operators. This flexibility allows for customization to specific application needs, ensuring optimal performance and reliability in diverse working environments.