The Komatsu PC220-7 is a robust Hydraulic Excavator from the 7 Series, engineered for demanding construction and earthmoving applications. This machine features a powerful Komatsu SAA6D102E-2 diesel engine, delivering 116 kW (155 HP) and equipped with a turbocharged, aftercooled aspiration system. Its hydrostatic transmission with a two-speed, power shift, counter-rotation drive system ensures efficient operation and maneuverability. With an operating weight between 22,000 and 23,000 kg, and impressive digging capabilities including a maximum digging depth of 6.64 meters, the PC220-7 is designed for reliability and performance in challenging environments. This Workshop Service Manual provides comprehensive guidance for the Komatsu PC220-7 Hydraulic Excavator. It covers essential maintenance procedures, detailed troubleshooting steps, and critical technical specifications, including engine details, transmission information, and fluid capacities for hydraulics, engine oil, coolant, and fuel. The manual is an indispensable resource for owners, mechanics, and technicians, offering the necessary information to ensure the optimal performance, longevity, and safe operation of the vehicle through proper upkeep and repair.