The Allison Transmission 4700 SP Service Repair Manual is a comprehensive resource designed to guide technicians through the servicing and repair of Allison 4700 SP transmissions. This manual covers transmissions equipped with Allison's 4th Generation Controls, including those with power takeoff (PTO) and output retarder options. The manual provides detailed instructions for every step of the repair process, starting with disassembly and component inspection, and continuing through module rebuild and final reassembly.

Detailed wear limits and spring data are included to ensure accurate component replacement and proper adjustment. The manual also features a section dedicated to customer service resources, providing essential information for resolving common issues. Illustrations, including line drawings, cross-sections, and exploded views, complement the text, clearly depicting the relationship of parts and procedures. Foldout pages in the back of the manual contain comprehensive cross-sections, exploded views, and a hydraulic schematic of the transmission in Neutral. The repair instructions are written in a clear, step-by-step format, making it easy for technicians to follow and understand the procedures, enabling them to perform repairs confidently and efficiently.

## The Allison Transmission 4700 SP: A Powerful and Reliable Workhorse

The Allison Transmission 4700 SP is a heavy-duty automatic transmission designed for demanding applications, primarily serving the commercial truck and bus industries. This robust transmission, built with proven Allison technology, delivers exceptional power, efficiency, and durability, making it the ideal choice for vehicles operating in tough environments and under challenging loads. A key feature of the 4700 SP is its fully automatic design, eliminating the need for a clutch pedal and simplifying operation. This enhances driver comfort, reduces fatigue, and allows for smoother, more efficient driving, ultimately improving productivity and fuel economy.

The 4700 SP boasts a range of technical features that contribute to its exceptional performance:

* **Durable and robust construction:** The transmission features a cast-iron housing and heavy-duty gears engineered to withstand the stresses of high torque and demanding applications.
* **Electronic controls:** Advanced electronic controls optimize gear selection, shifting, and engine braking for optimal performance and fuel efficiency.
* **Multiple ratios:** Available in various gear ratios, the 4700 SP can be tailored to specific vehicle requirements and operating conditions, ensuring optimal power delivery and fuel economy.
* **High torque capability:** Capable of handling high torque inputs, this transmission is ideal for heavy-duty applications requiring strong power delivery for acceleration and climbing challenging terrain.
* **Multiple operating modes:** The 4700 SP offers various operating modes, allowing drivers to select the most suitable setting for different driving conditions and load requirements.

The Allison 4700 SP is a reliable and versatile transmission that provides exceptional performance and efficiency, making it a preferred choice for a wide range of heavy-duty trucks and buses.