Komatsu PC210, 210LC-6K & PC240LC, PC240NLC-6K Excavator Factory Shop Manual (P/N EEBM001801)

This official Komatsu shop manual PDF (publication EEBM001801) is the primary factory reference for internal component identification, clearance data, and hydraulic circuit logic on the -6K series build. It covers the PC210-6K, PC210LC-6K, PC240LC-6K, and PC240NLC-6K excavators from serial number K32001 and up. Working on heavy machinery requires strict adherence to safety protocols to prevent severe injury. Always depressurize hydraulic circuits and verify equipment stability before applying the specifications listed in this document or performing any repair.

• Contains 40 pages of detailed sectional diagrams for 6-spool, 7-spool, and 8-spool control valves.
• Includes comprehensive system schematics, hydraulic pump assembly layouts, and standard bolt torque specifications across 665 pages.
• Features electrical wiring diagrams, electrical circuit diagrams, hydraulic circuit diagrams, hydraulic piping drawings, troubleshooting charts, and sketches of special tools for targeted diagnostic work.
• Details step-by-step disassembly and assembly procedures for the center swivel joint, travel motor, swing machinery, final drive, recoil spring, and track roller.

Component and System Documentation

Get a clear look at the internal structure and function of the hydraulic systems. The chapters break down essential machinery components. You will find extensive coverage on engine-related parts, cooling hardware, the power train, and heavy-duty undercarriage assemblies. Need to understand the variable capacity swash plate piston pumps? The documentation maps out their exact operation. It also details the integration of the Closed Center Load Sensing System (CLSS). This gives you the necessary context for how system pressure and flow are modulated during heavy-load operations.

By following the step-by-step instructions for testing and adjusting fuel injection timing, calibrating the governor motor lever stroke, and properly bleeding air from hydraulic cylinders, your shop can handle complex repair procedures in-house. Relying on these factory testing protocols drastically reduces bay turnaround times and helps avoid expensive dealership labor rates.

Specification and Technical Reference Data

Find the exact technical data for factory maintenance standards, including hydraulic relief settings and assembly clearances. The relief cracking pressure for the hydraulic tank is documented at 16.7 ± 3.9 kPa. Gear assembly data specifies a swing circle reduction ratio of 7.333. Standard final drive reduction ratios are defined at 57.000 for these specific excavator configurations. Every section is geared toward providing the precise numbers needed for professional testing and structural validation.

When evaluating sluggish hydraulic performance on these specific -6K models, technicians often misdiagnose a catastrophic main pump failure. In reality, the CLSS network is highly sensitive, and the root cause is frequently a degraded LS-EPC solenoid valve or a misadjusted pressure compensation stroke. Accurately verifying the servo piston input pressures against the baseline values in this manual isolates the true fault and prevents an unnecessary, costly main pump replacement.