This workshop service repair manual covers the Komatsu PC220LC-5, a robust excavator from the LC-5 Series. Engineered for demanding construction and earthmoving applications, this machine features a powerful 6.67 L diesel engine delivering 110 kW (148 HP) of net power. Its hydrostatic transmission ensures efficient power delivery, while the open-center load sensing hydraulic system, with a main pump flow rate of 440 L/min, provides precise control for various tasks. With an operating weight of 22,200 kg and a standard bucket capacity of 1.0 m³, the PC220LC-5 is designed for reliability and performance in challenging environments. This comprehensive English-language manual provides detailed information essential for the maintenance and repair of your Komatsu PC220LC-5. It includes in-depth coverage of all major systems, such as the engine, hydraulics, undercarriage, and travel system, along with specific maintenance procedures like engine oil changes at 250-hour intervals and its 23 L oil capacity. Technical specifications, troubleshooting guides, and safety recommendations are also included to assist owners, mechanics, and technicians in keeping the excavator in optimal working condition and ensuring safe operation.