This workshop service repair manual covers the Allison 4700 SP Generation Controls Vocational Models, a robust transmission designed for demanding vocational applications. Engineered for reliability and peak operating condition, the Allison 4700 SP is essential for maintaining optimal performance. This manual provides comprehensive information to ensure the longevity and efficiency of your vocational model transmission. This English-language manual offers detailed, step-by-step instructions for complete disassembly and servicing. It covers general information, periodic maintenance, engine, fuel system, cooling and lubrication, chassis, electrical system, servicing information, emission control, and wiring diagrams. Designed for both do-it-yourselfers and experienced mechanics, this manual is an indispensable resource for troubleshooting, repairs, and adhering to maintenance schedule recommendations, enabling you to fix problems efficiently.