Komatsu PC05-6, PC07-1, PC10-6, PC15-2 Shop Manual (P/N 020M0604)

• Official Komatsu publication P/N SEBM020M0604, revision 3 documentation detailing engine, chassis, electrical, and hydraulic systems
• Covers 1990s-era Komatsu PC05-6, PC07-1, PC10-6, and PC15-2 compact mini excavators featuring diverse hydraulic and swing configurations
• Contains 80+ hydraulic circuit diagrams, component exploded views, and technical inspection tables
• Comprehensive 248-page reference documenting specific hydraulic set pressures for the 2-spool through 8-spool control valve variants

Technical Layout and Function

This OEM service manual provides a structured analysis of the compact excavator systems tailored for the diagnostic needs of the shop floor. Primary sections break down component structure and function, followed by rigorous testing and adjustment parameters. Detailed chapters outline the mechanical composition of the travel motors, swing circles, center swivel joints, and control valves. The publication also details assembly sequences for the work equipment, boom cylinders, and bucket assemblies. Working on heavy machinery always involves substantial physical risks, so ensure you observe proper safety protocols and verify system depressurization before utilizing these factory baseline metrics in your shop.

Hydraulic and Engine Specifications

Engine data for the 3D72-2, 3D75-2, and 3D78-1 powerplants delivers exact compression pressure ratings, valve clearance specs, and fuel injection timing settings. The hydraulic data section lists main relief valve settings, theoretical pump discharge volumes, and tank capacities. For instance, the hydraulic pump rated flow is specified at 11.9 to 21 liters per minute at rated rpm. Main relief pressure for the PC15-2 boom circuit is documented strictly at 200 to 235 kg/cm2 in the testing data. Intake valve clearance is listed at 0.20 mm in the engine specification tables. Having these precise numbers directly addresses the daily challenges of field technicians trying to isolate pressure drops or mechanical wear.