This is an Allison Transmission Service Training Course Student Workbook manual for AT, MT, and HT transmissions. The manual is designed to help users gain a better understanding of the workings of the transmission and how to maintain it for optimal performance. The manual is compatible with both Detroit Diesel and Allison equipment.

The manual covers a range of topics including transmission fundamentals, diagnosis, troubleshooting, and repair procedures. Whether you're a professional mechanic or a DIY enthusiast, this manual is an essential resource for anyone looking to work with Allison transmissions.