This document is a shop manual for Komatsu crawler tractors models D32E/P-1A, D38E/P-1A, and D39E/P-1A. It contains information on safety procedures, maintenance standards, testing and troubleshooting, disassembly and assembly, and other technical details. The manual is divided into sections covering general information, structure and function, maintenance, repairs, and other topics to aid technicians in performing high quality repairs on these models. Komatsu may issue revisions to update and improve the content of this manual over time.