Komatsu PC490LC-10 Hydraulic Excavator Shop Manual SEN05622-01 April 2011 – Complete Workshop Repair & Service Guide
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Complete Komatsu PC490LC-10 Hydraulic Excavator Shop Manual SEN05622-01 (April 2011). Approximately 1,600 pages covering engine, hydraulics, electrical, troubleshooting, disassembly, maintenance standards, air conditioning and circuit diagrams for machines from serial 80001 up.
Description
Komatsu PC490LC-10 Hydraulic Excavator Shop Manual SEN05622-01
This is the complete Komatsu PC490LC-10 Hydraulic Excavator Shop Manual, document number SEN05622-01, dated April 2011, covering machines from serial number 80001 and up. At approximately 1,600 pages, this is the full workshop service and repair guide for the PC490LC-10, covering the SAA6D125E-6 diesel engine, hydraulic systems, electrical control systems, undercarriage, work equipment, operator cab, and air conditioning. It is written for technicians who need factory-level procedures, exact specifications, and systematic troubleshooting guidance for every major assembly on the machine.
File Details
- Manual type: Shop Manual (Service Repair Workshop Manual)
- Brand: Komatsu
- Model: PC490LC-10 Hydraulic Excavator
- Engine: Komatsu SAA6D125E-6 diesel engine
- Serial number range: 80001 and up
- Document number: SEN05622-01
- Date: April 2011
- Language: English
- Page count: Approximately 1,600 pages
- File format: PDF
Chapters Covered
The manual is organised into ten top-level sections that together cover the entire machine:
- 00 – Index and Foreword: Safety notices, general precautions, how to read the manual, maintenance standard terminology, handling of fuel/intake/hydraulic/electrical equipment, push-pull coupler procedures, electric wire code, tightening torque tables, abbreviations, conversion tables.
- 01 – Specification: Machine specifications, specification drawings, working range drawings, weight table, fuel/coolant/lubricants table.
- 10 – Structure and Function: Engine and cooling system, cooling fan pump and motor, power train, swing circle, swing machinery, final drive, undercarriage and frame, hydraulic component layout, CLSS, main pump, control valve, swing motor, travel motor, PPC valve, solenoid valve, attachment circuit selector valve, center swivel joint, accumulator, work equipment, cab and attachments, electrical control system, machine monitor system, KOMTRAX, sensors.
- 20 – Standard Value Table: Standard service values for engine and machine, including judgment criteria for testing and troubleshooting.
- 30 – Testing and Adjusting: Engine speed, boost pressure, exhaust gas temperature and colour, valve clearance, compression pressure, blowby pressure, engine oil pressure, EGR and KVGT oil pressure, fuel pressure and leakage, air bleeding, cylinder cutout mode, no-injection cranking, belt tension, fuel doser cleaning, injector/controller compensation values, swing circle bearing clearance, track shoe tension, hydraulic pressure measurement and adjustment across work equipment, swing, travel, control, PC and LS circuits, solenoid and PPC output pressures, pump swash plate sensor, fan pump circuit, oil leakage, air bleeding, cab tipping stopper, mirror adjustment, camera angle, battery disconnect switch, diodes, Pm clinic check sheets.
- 40 – Troubleshooting: General troubleshooting procedure, checks before troubleshooting, classification, symptom index, connector layout, failure codes table, troubleshooting by failure code (air conditioner sensors, engine controller lock, KDPF requests, air cleaner clogging, charge voltage, engine oil pressure/level, coolant overheat/level, hydraulic oil overheat, engine speed sensors, charge air pressure/temperature, throttle sensor, coolant temperature, sensor supplies, ambient pressure, engine overspeed, injector circuits, rail pressure, battery voltage, EGR, KVGT, mass air flow, DPF/KDOC temperatures and pressures, doser valves, CAN communication, monitor errors, pump controller errors, fan speed, travel and swing solenoids, PPC sensors, wiper, and more).
- 50 – Disassembly and Assembly: Removal, installation, disassembly and assembly of supply pump, injectors, cylinder head, radiator, hydraulic oil cooler, aftercooler, cooling fan and motor, engine and main pump, engine front and rear seals, engine hood, KDPF, KCCV, air cleaner, travel motor and final drive, swing motor and machinery, swing circle, track shoe, sprocket, idler, idler cushion, track roller, carrier roller, revolving frame, counterweight, center swivel joint, hydraulic tank, main pump, control valve, work equipment PPC valve, travel PPC valve, work equipment, work equipment cylinder, operator cab, cab glass, front window, floor frame, air conditioner unit, operator seat, seat belt, front wiper, air conditioner compressor, condenser, engine controller, pump controller, machine monitor, pump swash plate sensor, mass air flow sensor, KOMTRAX terminal.
- 60 – Maintenance Standard: Maintenance standards for engine mount, cooling system, cooling fan pump and motor, swing circle, swing machinery, final drive, sprocket, track frame and idler cushion, idler, track roller, carrier roller, track shoe, main pump, control valve, swing motor, travel motor, PPC valve, solenoid valve, attachment circuit selector valve, center swivel joint, work equipment, work equipment cylinders.
- 80 – Appendix (Air Conditioner): Refrigerant precautions, air conditioner components, refrigeration cycle, air conditioner unit, dual pressure switch, controller, compressor, condenser, receiver drier, sunlight sensor, outside air temperature sensor, testing and troubleshooting, circuit diagrams, connector layout, self-diagnosis, vent and FRESH/RECIRC testing, gauge pressure troubleshooting, service tool connection, piping precautions, compressor oil handling.
- 90 – Diagrams and Drawings: Hydraulic circuit diagram with symbols, electrical circuit diagram with symbols, air conditioner unit electrical circuit diagram.
Across these sections, the manual provides the complete workflow a technician needs: identify the system from the structure and function chapter, confirm the specification from the standard value table, test and adjust using the procedures in section 30, troubleshoot with failure codes or symptom-based guidance in section 40, remove and reinstall with the step-by-step instructions in section 50, and verify against the maintenance standard values in section 60.
What This Komatsu PC490LC-10 Shop Manual Enables You to Do
The scope of this Komatsu PC490LC-10 shop manual means it supports the full range of workshop and field service tasks on the machine. You can diagnose engine faults using the SAA6D125E-6 specifications, common rail fuel system data, and the complete failure code tables. You can measure and adjust the hydraulic system, including the CLSS-controlled main pump, control valve, PC and LS circuits, swing and travel motors, PPC valves, and solenoid valves. The electrical control system is covered with connector layouts, pin identifications, T-branch adapter references, fuse box connection tables, and circuit diagrams, so fault tracing in the CAN communication network, machine monitor, pump controller, and engine controller is practical rather than guesswork. Undercarriage work, from track shoe separation and sprocket removal to idler cushion and track roller assembly, is documented with special tool lists and tightening torques. Work equipment cylinder disassembly, swing machinery rebuild, final drive rebuild, and center swivel joint service all have dedicated procedures. The operator cab and its attachments, including the air conditioner unit, are covered to component level with removal and installation instructions and refrigerant handling precautions.
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Why This Manual Matters for PC490LC-10 Owners and Technicians
The PC490LC-10 is a 46,660 kg class hydraulic excavator powered by the Komatsu SAA6D125E-6 engine, producing 268 kW (359 HP) net at 1,900 rpm. Correct service information is not optional on a machine of this size and complexity. The hydraulic system alone has multiple pressure settings, relief valves, EPC valves, and electronic controls that interact. The engine uses a common rail fuel injection system with precisely matched injectors and an engine controller that must be programmed when components are replaced. The exhaust aftertreatment system (KDPF, KDOC, KCSF) requires specific regeneration and cleaning procedures. Without the correct specifications, a technician can easily set a pressure too high, damage a component through incorrect assembly, or miss a diagnostic step that would have identified a failing sensor. This manual eliminates that risk by giving the exact figures, sequences, and test points that Komatsu specifies for the PC490LC-10.
Instant PDF Delivery – No Shipping, No Waiting
This Komatsu PC490LC-10 Hydraulic Excavator Shop Manual SEN05622-01 is delivered as a PDF download immediately after payment. There is no physical book to ship, no waiting for delivery, and no risk of a damaged or lost parcel. You can open the file on any device – laptop, tablet, or smartphone – and print whichever pages you need for the workshop. Whether you are performing a one-off repair, rebuilding a hydraulic component, tracing an electrical fault, or setting up a maintenance schedule for a fleet of PC490LC-10 machines, this service repair workshop manual provides the complete technical reference in a single, searchable, printable document.
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