The Allison Transmission 1000 MH Service Repair Manual provides comprehensive repair and maintenance information for the Allison 1000 MH transmission, a popular choice for bus applications. This detailed manual covers a wide range of topics, including general information, description and operation of the transmission, preventive maintenance procedures, and complete overhaul instructions.

Dive into specific sections dedicated to the transmission's key components, such as the mounting, input drives, lockup clutch, torque converter, and hydraulic retarder. The manual thoroughly explains the operation of the power takeoff (PTO) drives, splitter clutches, gearing, high-range clutch, intermediate-range clutch, low-range clutch, reverse clutch, high-intermediate-range clutch, and the speedometer drive. You'll also find in-depth guidance on the parking brake, pan, strainer, input pressure and scavenge pump, housing, covers, and the intricate workings of the hydraulic system across various models.

This manual delves into the nuances of different control systems, including manual-electric control, SPG-control automatic-electric, and electronic control. It provides detailed insights into the hydraulic circuits for each system, enabling you to troubleshoot and maintain the transmission's control system with confidence.

The manual also covers vital preventive maintenance practices, including general inspection, transmission fluid level checks, fluid contamination management, filtration procedures, and adjustments for lockup speed, throttle sensor, and parking brake. Additionally, you'll find guidance on proper preservation and storage, as well as troubleshooting steps for both the control system and the transmission itself.

The overhaul section encompasses detailed procedures for disassembly, rebuild, and assembly of the transmission. From removing and installing the transmission, to carefully handling, cleaning, and inspecting components, this manual provides step-by-step instructions for every stage of the overhaul process.

The manual also includes a dedicated section for rebuild of subassemblies, covering components such as the shift selector, throttle potentiometer, electronic control shift selector (both lever-type and touch pad), electronic control unit (ECU), parking brake, hydraulic retarder control valve, filter, main-pressure regulator valve, hydraulic lockup valve body, main-pressure transfer tube, trimmer valve body, and more.

Comprehensive wear limits and spring data are provided, ensuring you have the necessary information to assess component wear and make informed repair decisions.

This manual is a valuable resource for anyone involved in the repair and maintenance of the Allison 1000 MH transmission, providing clear instructions, detailed diagrams, and essential information to ensure optimal performance and longevity.

The Allison Transmission 1000 MH Service Repair Manual is a comprehensive guide designed to assist technicians with the repair and maintenance of Allison's 1000 MH series of automatic transmissions, specifically geared towards bus applications. These transmissions are renowned for their durability, efficiency, and reliability, making them a popular choice for various bus models, including transit buses, school buses, and coaches. The 1000 MH series incorporates Allison's patented torque converter and electronic controls, delivering smooth and efficient power delivery for both city and highway driving. The manual provides detailed information on each component within the transmission, covering topics like assembly, disassembly, troubleshooting, and adjustment procedures. It also includes comprehensive diagrams and illustrations, simplifying the understanding of complex systems and facilitating efficient repair work.

The manual is a crucial resource for both experienced mechanics and technicians in training, ensuring proper maintenance and repair practices. It includes a wide range of information, from basic troubleshooting steps to detailed repair procedures, enabling technicians to identify issues, diagnose faults, and perform necessary repairs accurately. It covers topics such as engine-transmission interface, hydraulic system, electronic control units, and mechanical components, providing a thorough understanding of the entire transmission system. The manual's detailed instructions, clear illustrations, and comprehensive troubleshooting guides make it an invaluable tool for achieving optimal performance and extending the lifespan of the Allison 1000 MH transmission in bus applications. Its accessibility and comprehensive nature ensure that technicians have the necessary information at their fingertips, enabling them to provide efficient and effective service for these critical components in the bus industry.