PRINCIPLES OF OPERATION PO3065EN FOREWORD Principles of Operation will help you become familiar with the operation of the Allison 1000 and 2000 Product Families transmissions. This manual supplements other Allison publications as a useful reference for service, diagnosis, and repair of these transmissions. Review the Table of Contents to quickly locate information. This manual includes: • General description of the 1000 and 2000 Product Families transmissions and detailed descriptions of major components. • Description of the electronic control system components and its diagnostic capability. • Description of the hydraulic control system components. • Detailed hydraulic schematics and torque flow diagrams. All specifications and data are subject to change without notice. This publication is periodically revised to include new models and new product features. To ensure that you have the latest information, check with your Allison Transmission service outlet for the current publication version. Additional copies of this publication may be purchased from authorized Allison Transmission service outlets. Look in your telephone directory under the heading of Transmissions—Truck, Tractor, etc.
SAFETY INFORMATION IMPORTANT SAFETY NOTICE Proper service and repair practices are important to the safe and reliable operation of the equipment. The Principles of Operation is not a substitute for other Allison publications that address specific service or diagnostic procedures. Refer to the following manuals for detailed information and recommended practices before attempting to service the transmission.
Allison Transmission, General Motors Corporation P.O. Box 894 Indianapolis, Indiana 46206-0894 www.allisontransmission.com
2004 December 1000 and 2000 Product Families Principles of Operation—December 2004 Copyright © 2004 General Motors Corp.
Copyright © 2004 General Motors Corp.
Page i Printed in USA
