The Caterpillar 320B Hydraulic Excavator is a robust and reliable machine engineered for demanding work environments. Featuring a powerful CAT 3066T diesel engine with turbocharging and direct injection, this excavator delivers exceptional performance with a net power of 99 kW (133 hp) at 2000 rpm. Its hydrostatic transmission with a two-speed travel system ensures precise control and maneuverability across various terrains. Designed for efficiency and durability, the 320B is an ideal choice for construction, mining, and other heavy-duty applications where consistent power and operational excellence are paramount.

This manual provides comprehensive Wiring Schematics for the Caterpillar 320B Hydraulic Excavator, presented in English. It serves as an essential resource for understanding the intricate electrical systems of the machine. Detailed diagrams and information within this guide will assist owners, technicians, and mechanics in diagnosing electrical issues, performing maintenance, and ensuring the optimal performance and longevity of the 320B. The content is structured to facilitate clear comprehension and efficient problem-solving for all users.