This comprehensive Komatsu PC300-7, PC300LC-7, PC350-7, and PC350LC-7 Hydraulic Excavator Service Shop Repair Manual provides detailed servicing instructions and step-by-step guidance on repair, maintenance, and troubleshooting. The manual covers a wide range of topics, including engine, hydraulics, electrical systems, undercarriage, and more. It is an essential resource for technicians, mechanics, and operators who need to perform repairs, maintenance, or diagnostics on these excavators. With detailed illustrations, diagrams, and clear instructions, this manual ensures efficient and effective work on these heavy-duty machines.

The Komatsu PC300-7, PC300LC-7, PC350-7, and PC350LC-7 are powerful hydraulic excavators designed for heavy construction and earthmoving applications. These models belong to Komatsu's renowned 7 series, known for their efficiency, durability, and operator comfort. The PC300-7 and PC350-7 are standard excavators with a conventional boom and stick configuration, while the PC300LC-7 and PC350LC-7 feature a long reach boom, ideal for working in confined spaces or over obstacles. These excavators boast impressive lifting capacities, ranging from 13.9 tons to 16.2 tons, and boast powerful Komatsu engines that deliver exceptional performance. The PC300-7 and PC300LC-7 are equipped with a 6-cylinder SAA6D107E-3 engine, generating 170 horsepower, while the PC350-7 and PC350LC-7 are powered by a larger 6-cylinder SAA6D114E-3 engine delivering 190 horsepower. These excavators are designed with operator comfort and safety in mind. The spacious cab offers excellent visibility, ergonomic controls, and a comfortable operator seat. The advanced hydraulic system provides smooth and precise control, allowing for efficient operation. The robust construction and durable components ensure long-lasting performance and minimize downtime. These excavators are commonly used in a variety of construction projects, including road building, excavation, demolition, and material handling. Their versatility and reliability make them a popular choice for contractors and construction companies worldwide. The Shop Manual for these excavators provides comprehensive repair and maintenance information, aiding technicians in maintaining peak performance and extending the life of these powerful machines.