Section I Introduction; About This Manual - Allison Transmission 3000 Mechanic's Tips

INTRODUCTION Section I
1–1. ABOUT THIS MANUAL
This handbook is a mechanic's reference for maintaining, removing, or installing
the 3000 and 4000 Product Families on-highway transmission with a WTEC III
control system. WTEC III controls were optional on the 3000 and 4000 Product
Families on-highway transmission units built in 1997, but became standard on
units built starting in 1998.
All features of the transmission and the vehicle involved in installation procedures
are discussed. The information presented will help the mechanic maintain, remove,
or install the transmission in a manner that promotes satisfactory operation and
long service life. For additional detailed information, refer to the appropriate
transmission service manual and electronic controls troubleshooting manual.
Unless specifically indicated otherwise, this handbook refers to all 3000 and 4000
Product Families on-highway transmissions, except 7-speed models. The
differences between the various transmissions are explained as required.
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