This manual covers the Allison AT500 and AT1500 series transmissions. These transmissions are known for their robust engineering and reliability, designed to meet the demands of various commercial and industrial applications. Their advanced design ensures efficient power delivery and durability, making them a preferred choice for operators who prioritize performance and longevity in their vehicles.

The purpose of this comprehensive service manual is to provide detailed information for the maintenance, repair, and troubleshooting of the Allison AT500 and AT1500 transmissions. It includes essential technical specifications, step-by-step procedures for common service tasks, diagnostic guidance, and safety precautions. This resource is intended for owners, technicians, and mechanics to ensure the optimal performance and extended service life of these transmissions.