This comprehensive workshop service manual provides detailed instructions for servicing and maintaining Allison 3000 and 4000 series transmissions. It includes information for a wide range of models, encompassing the 3000 series families like 3000 EVS, 3500 EVS, 3000 HS, 3500 HS, 3000 MH, 3500 MH, 3000 PTS, 3500 PTS, 3000 RDS, 3500 RDS, 3000 SP, 3200 SP, 3500 SP, 3700 SP, 3000 TRV, 3200 TRV, MD 3060, MD 3066, MD 3560, MD 3070PT, MD 3060P, MD 3066P, MD 3560P, MD 3060R, MD 3066R, MD 3560R, MD 3060PR, MD 3066PR, MD 3560PR, B 300, B 400, B 300P, B 400P, B 300R, B 400R, B 300PR, B 400PR, T 250, T 310, T 255, T 325, T 260, T 350, T 265, T 375, T 270, and T 280. Additionally, it covers the 4000 series families including 4000 EVS, 4500 EVS, 4700 EVS, 4800 EVS, B 500, 4000 HS, 4500 HS, 4700 RDS, 4800 SP, 4000 MH, 4500 SP, 4700 SP, 4000 RDS, 4500 TRV, 4000 SP, 4000 TRV, HD 4060, HD 4560, HD 4070, HD 4076, B 500P, HD 4060P, HD 4560P, HD 4070P, B 500R, HD 4060R, HD 4560R, HD 4070R, B 500PR, HD 4060PR, HD 4560PR, HD 4070PR, T 425, and T 450. The manual provides comprehensive information covering general information, supplementary information, diagnosis, restoring transmission to service, specifications and data, preventive maintenance, overhaul information, tools and equipment, cleaning and inspection, assembly procedures, removing (or installing) the transmission, spring specifications, torque specifications, transmission disassembly, module rebuild, wiring harness assembly, oil pan and suction filter, converter housing, clutch system, main pump assembly, front support assembly, rotating clutch module, main housing assembly, ring gear and clutch component inspections, main shaft inspection, planetary module, rear cover assembly, output yoke inspection, control valve module, transmission assembly, wear limits, and spring data. This manual also includes valuable troubleshooting guides for WTEC II and WTEC III controls, 4th generation transmissions, principles of operation for 4th generation transmissions, mechanics tips for WTEC III, technician guides for both 3K and 4K series, Allison DOC 7.0 user guide, Allison MD HD B series troubleshooting manual, transmission information from Allison's OM2995EN document, 4000 MH transmission owner's manual, 4700 cross section (OM4119EN), prognostics job aid, 3K operators manual, 3K cross section, 4K cross section, and 4070 cross section. The manual utilizes step-by-step written procedures, accompanied by illustrative pictures and diagrams, to ensure clarity and accuracy. This comprehensive resource is designed to assist service technicians in performing proper maintenance and repairs on Allison transmissions.

The Allison Transmission 3000 & 4000 Series Gearboxes are renowned heavy-duty automatic transmissions designed for a wide range of commercial vehicles. These transmissions are known for their exceptional durability, reliability, and fuel efficiency, making them a preferred choice for demanding applications. The 3000 and 4000 Series gearboxes offer a variety of configurations and ratios to meet specific vehicle requirements, including those for refuse trucks, transit buses, vocational trucks, and motorhomes. They feature a robust design with hardened gears and shafts, sophisticated electronic controls, and advanced hydraulic systems. The Allison 3000 & 4000 Series transmissions utilize a unique torque converter that provides smooth acceleration and efficient power transfer, effectively reducing engine strain and maximizing fuel economy. These transmissions also offer advanced features such as electronic shifting, automatic retarder, and integrated diagnostics for enhanced performance, safety, and ease of maintenance. The Allison 3000 and 4000 Series transmissions are designed to withstand the rigors of heavy-duty operation, offering extended service life and minimal downtime. The robust construction and advanced technology ensure smooth gear changes and optimal performance in various operating conditions, from stop-and-go city traffic to long-haul highway driving. The electronic controls provide precise gear selection and adaptive shift strategies to maximize fuel efficiency and minimize wear and tear. The integrated diagnostics system continuously monitors the transmission's health and alerts the operator to any potential issues, enabling proactive maintenance and avoiding costly breakdowns. With their proven track record of reliability and efficiency, the Allison 3000 & 4000 Series transmissions have become an industry standard for heavy-duty commercial vehicles, delivering superior performance and cost-effectiveness for operators across diverse applications.