The Komatsu PC138US-2 Hydraulic Excavator Repair Service Manual is a comprehensive resource designed to guide professional technicians, DIY mechanics, and anyone performing repairs and maintenance on this specific model. It offers detailed information suitable for individuals with a basic understanding of electrical and mechanical concepts. The manual covers a wide range of topics, mirroring what you would find in a factory service manual and owner's manual, providing a thorough guide to maintaining and repairing your Komatsu PC138US-2 Hydraulic Excavator. The manual walks you through fundamental repair and maintenance procedures, teaching you the same knowledge that factory-trained technicians possess. It includes step-by-step instructions, critical specifications, illustrations, maintenance procedures, disassembly and assembly guides, cleaning and reinstalling procedures, and much more. This comprehensive resource empowers owners to make informed decisions about the necessary steps to maintain and repair their Komatsu PC138US-2 Hydraulic Excavator effectively.

The Komatsu PC138US-2 is a powerful and versatile hydraulic excavator designed for a wide range of construction and demolition applications. It boasts a robust and reliable design, incorporating advanced features to enhance productivity and operator comfort. This model is powered by a 4-cylinder Komatsu SAA4D107E-2 engine, renowned for its efficiency and low emissions. Its hydraulic system, featuring a variable displacement piston pump, provides precise and responsive control for smooth operation and optimal digging performance. The PC138US-2 incorporates a spacious and ergonomically designed cab, offering excellent visibility and a comfortable working environment for the operator. The cab features intuitive controls, a multi-function instrument panel, and a comfortable seat with adjustable settings, contributing to reduced operator fatigue during extended work sessions. Furthermore, the Komatsu PC138US-2 is equipped with a range of safety features to ensure operator wellbeing and minimize potential risks. These include an emergency stop switch, a rollover protective structure (ROPS), and a falling object protective structure (FOPS), all designed to safeguard the operator in various work scenarios. The excavator also offers multiple attachment options, allowing it to be customized for various tasks, such as digging, loading, and demolition. These attachments include a variety of buckets, breakers, and grapples, expanding the capabilities of the PC138US-2 and making it a versatile tool for diverse construction projects. With its powerful engine, precise hydraulic system, and commitment to operator safety and comfort, the Komatsu PC138US-2 is a highly regarded hydraulic excavator that provides exceptional performance and value for its users.