This comprehensive Allison Transmission B 400P Service Repair Manual provides detailed instructions and technical information to help you maintain and repair your bus transmission. The manual covers all models, engines, transmission types, and trim levels. It is designed for both experienced mechanics and DIY enthusiasts, offering clear and easy-to-understand text, high-quality diagrams, and step-by-step instructions. The manual covers a wide range of topics, including: * **General Information:** This section provides an overview of the Allison Transmission B 400P, including its features, operation, and specifications. * **Description and Operation:** This section dives deeper into the transmission's functionality, explaining how each component works and interacts with others. * **Preventive Maintenance:** Learn essential maintenance tasks to keep your transmission running smoothly, including fluid checks, filter changes, and adjustments. * **General Overhaul Information:** This section outlines the process for overhauling the transmission, providing tips and procedures for proper disassembly, rebuild, and assembly. * **Disassembly of Transmission:** Detailed instructions are provided for taking apart the transmission, with clear illustrations to guide you through each step. * **Rebuild of Subassemblies:** This section focuses on rebuilding individual components of the transmission, including instructions for cleaning, inspecting, and replacing parts. * **Assembly of Transmission:** The manual provides clear and detailed instructions for reassembling the transmission after a rebuild or repair, ensuring proper alignment and function. * **Wear Limits and Spring Data:** This section contains critical information about wear limits for transmission components, allowing you to identify parts that need replacement. * **Customer Service:** Contact information for Allison Transmission is provided, should you need technical support or assistance. The manual is enhanced with numerous line drawings, cross-sectional views, and exploded views to illustrate the correct procedures for all models, even those not explicitly illustrated. You'll find foldout pages in the back of the manual with cross-sections, exploded views, and a hydraulic schematic for the transmission in Neutral. This Allison Transmission B 400P Service Repair Manual is your complete guide to keeping your bus transmission running smoothly, and will help you save money by performing repairs yourself.

The Allison Transmission B 400P Service Repair Manual is a comprehensive guide for technicians and mechanics responsible for the maintenance and repair of the Allison B 400P transmission, a robust and reliable powertrain component commonly found in heavy-duty vehicles, particularly buses. The manual serves as a vital resource, offering detailed instructions, diagrams, and specifications for every aspect of the B 400P transmission, from routine maintenance to complex repairs. It encompasses information on various components, including the transmission control unit, torque converter, clutches, gears, and hydraulic systems, providing step-by-step procedures for disassembly, inspection, troubleshooting, and reassembly. The manual's thoroughness ensures technicians have the necessary knowledge and guidance to perform their tasks effectively, minimizing downtime and maximizing the longevity of the transmission. The Allison B 400P transmission itself is renowned for its durability, efficiency, and fuel economy, making it a popular choice for bus operators worldwide. Designed to handle the demanding requirements of heavy-duty applications, the B 400P features a robust construction with high-quality materials and advanced engineering that ensures its reliability even under extreme operating conditions. Its electronically controlled system optimizes gear selection for efficient power delivery and fuel consumption, while its advanced hydraulic system ensures smooth and precise shifting. The B 400P's versatility extends to its compatibility with a wide range of engines and applications, making it a flexible and adaptable solution for bus manufacturers and operators. Equipped with a variety of features, such as electronic diagnostics and advanced electronic controls, the Allison B 400P not only enhances performance but also simplifies maintenance and troubleshooting, contributing to its overall value proposition.