Komatsu PC500LC-10R Hydraulic Excavator Shop Manual SEN06722-09 – Complete PDF Service & Repair Guide

Description

Komatsu PC500LC-10R Shop Manual – SEN06722-09

This is the complete Komatsu PC500LC-10R shop manual, document number SEN06722-09. It is the same technical reference used in Komatsu workshops to service, diagnose, disassemble, repair and reassemble the PC500LC-10R hydraulic excavator and its SAA6D125E-5 diesel engine. Every chapter is included – specifications, structure and function, standard value tables, testing and adjusting, troubleshooting, disassembly and assembly, maintenance standards, air conditioner information, and the full hydraulic and electrical circuit diagrams.

File Details

• Manual type: Shop Manual (Service & Repair)
• Brand: Komatsu
• Model: PC500LC-10R
• Engine: Komatsu SAA6D125E-5
• Document number: SEN06722-09
• Language: English
• File format: PDF
• Page count: Approximately 2,100 pages

Chapters Covered

• 00 INDEX AND FOREWORD
• 01 SPECIFICATIONS
• 10 STRUCTURE AND FUNCTION
• 20 STANDARD VALUE TABLE
• 30 TESTING AND ADJUSTING
• 40 TROUBLESHOOTING
• 50 DISASSEMBLY AND ASSEMBLY
• 60 MAINTENANCE STANDARD
• 80 THE OTHER INFORMATION
• 90 CIRCUIT DIAGRAMS

01 Specifications

Complete machine specifications for the PC500LC-10R, including the specification drawing with overall length, overall height, overall width, shoe width, cab height, tail swing radius, track length, distance between tumbler centres, minimum ground clearance and travel speed. Working range drawings show maximum digging reach, maximum digging depth, maximum digging height, maximum vertical wall digging depth, maximum dumping height and minimum dumping height. Engine specifications list the SAA6D125E-5 rated horsepower, maximum torque, no-load speeds, minimum fuel consumption ratio, starting motor, alternator and battery. Undercarriage and hydraulic system specifications cover the main pump, control valve, travel motor, swing motor, boom cylinder, arm cylinder and bucket cylinder dimensions. A weight table lists dry weights for every major component, and a fuel/coolant/lubricant table gives specified and refill capacities.

10 Structure and Function

This is the theory chapter. It explains how each system on the PC500LC-10R works, starting with the boot-up system and system operating lamp, then the battery disconnect switch. The engine system section covers the engine control system, auto-deceleration, automatic warm-up, overheat prevention, turbocharger protection and automatic idle stop, with component part illustrations. The cooling system explains the fan clutch and its speed control. The hydraulic system is covered in depth: CLSS structure, unload valve operation, pump swash plate angle control, pressure compensation, engine and pump combined control, pump and valve control, the main pump, LS valve, PC valve, LS-EPC valve, PC-EPC valve, and the full control valve including pressure compensation, LS bypass, Hi-valve, regeneration circuits, merge-divider, LS select, self-pressure reducing, travel junction, travel PPC shuttle, boom hydraulic drift prevention and arm quick return. Work equipment, swing and travel systems are each broken down with layout drawings and component explanations.

20 Standard Value Table

The standard value tables give the new-machine values and repair limits for the engine and machine. Engine tables cover performance, air intake and exhaust, main body, fuel system, lubrication and cooling fan speed. Machine tables cover engine speed, control valve spool stroke, travel of control levers, operating effort, work equipment/swing/travel oil pressures, PC valve and LS valve pressures, LS differential pressure, EPC valve outputs, PPC valve outputs, swing performance, travel performance, hydraulic drift, work equipment speed, operation time lag, oil leakage and pump performance. A machine posture and measuring procedure section accompanies the tables.

30 Testing and Adjusting

This chapter gives the measuring tools and step-by-step methods for testing and adjusting the PC500LC-10R. Engine and cooling system procedures include engine speed, boost pressure, exhaust gas temperature and colour, valve clearance, compression pressure, blowby pressure, engine oil pressure, fuel pressure, fuel return rate and leakage, air bleeding, fuel circuit leakage, cylinder cut-out mode, no-injection cranking, fan belt, alternator belt, automatic tensioner and cooling fan speed. Power train, undercarriage and hydraulic system procedures cover swing circle bearing clearance, track tension, releasing remaining pressure, work equipment/swing/travel circuit pressures, control circuit pressure, pump PC and LS control circuit pressures, solenoid valve outlet pressure, PPC valve outlet pressure, hydraulic drift diagnosis, oil leakage, bleeding the hydraulic circuit, and testing and charging the attachment accumulators. Electrical system procedures cover the machine monitor, service mode, KOMTRAX start-up, rearview camera angle, engine controller voltage circuits, battery disconnect switch and diode testing.

40 Troubleshooting

The troubleshooting chapter is organised by failure code and by symptom. It opens with general troubleshooting points, the sequence of events, checks before troubleshooting, inspection procedures, testing procedures and connector/wiring harness identification. The failure codes table covers all Komatsu codes for this model, from engine and aftertreatment codes like CA111, CA115, CA122, CA123 and the full CA range, through pump controller codes such as DA20MC, DA22KK, DA25KP and DA2QKR. E-mode troubleshooting covers the electrical system symptom by symptom – engine does not start, preheating problems, monitor display faults, gauge and caution lamp faults, alarm faults, wiper and washer faults, one-touch power maximizing faults, attachment circuit faults and KOMTRAX faults. H-mode troubleshooting covers hydraulic and mechanical systems – all work equipment/swing/travel issues, speed and power loss, fine control, engine speed drop, combined operation faults, travel faults, swing faults, fan speed, hydraulic pump noise, boom/arm/bucket speed and power, and hydraulic drift. S-mode troubleshooting covers the engine – starting, misfiring, power, exhaust colour, oil consumption, fuel consumption, oil pressure, coolant and oil mixing, overheating, noise and vibration. Each code and symptom entry includes detail of failure, action level, controller action, problem on machine, related information and a numbered troubleshooting procedure with measuring points and judgment criteria.

50 Disassembly and Assembly

The largest chapter, covering every major removal, installation, disassembly and assembly procedure for the PC500LC-10R. It opens with the coating materials list, special tools list and sketches of special tools. Engine and cooling system procedures cover the supply pump, injector, cylinder head, starting motor, muffler, alternator belt, fan belt, radiator, hydraulic oil cooler, aftercooler, fan clutch, fan, engine and main pump assembly, front and rear oil seals, engine hood, fuel tank, air cleaner and air conditioner condenser. Power train procedures cover travel motor and final drive, swing motor and swing machinery, and swing circle. Undercarriage and frame procedures cover track assembly separation and connection, sprocket, idler and idler cushion, track roller, carrier roller, revolving frame and counterweight. Hydraulic system procedures cover centre swivel joint, hydraulic tank, main pump, control valve, work equipment PPC valve and travel PPC valve. Work equipment, cab and electrical system procedures complete the chapter.

60 Maintenance Standard

Maintenance standards for every major component on the PC500LC-10R. Engine and cooling system standards cover engine mount and cooling system. Power train standards cover swing circle, swing machinery, final drive, sprocket and sprocket tooth profile. Undercarriage and frame standards cover track frame, idler cushion, idler, track roller, carrier roller, track shoe and triple shoe. Hydraulic system standards cover main pump, swing motor, travel motor, control valve, work equipment and swing PPC valve, travel PPC valve, 1st-line attachment PPC valve, solenoid valve, attachment circuit selector valve and centre swivel joint. Work equipment standards cover the linkage, boom cylinder, arm cylinder and bucket cylinder.

80 The Other Information

This chapter covers the air conditioner system – precautions for refrigerant, air conditioner components and specifications, the refrigeration cycle configuration and function, the air conditioner unit and its component parts, the air conditioner controller, compressor, condenser, receiver drier, sensors, testing and troubleshooting procedures, the circuit diagram and connector pin arrangement, input and output signals, installation locations, air leakage testing, self-diagnosis, vent mode changeover, fresh/recirc air changeover, sunlight sensor, dual pressure switch, relays, troubleshooting charts and failure codes.

90 Circuit Diagrams

The full hydraulic and electrical circuit diagrams for the PC500LC-10R. Hydraulic diagrams cover the boom raised condition, upper structure swing to left, and boom raised with swing to left, plus the two-part full hydraulic circuit diagram with symbols. Electrical diagrams are provided across seven sheets with symbols, plus the connector and wiring harness chart across fifteen sheets, giving the complete electrical architecture of the machine.

Why This Komatsu PC500LC-10R Shop Manual Belongs in Your Workshop

IMAGES PREVIEW

The PC500LC-10R is a 49-tonne class hydraulic excavator built around the Komatsu SAA6D125E-5 engine and the CLSS hydraulic system. Servicing it without the correct procedures, torque values and pressure settings is how components get damaged, pumps get ruined and diagnostic time gets wasted. This manual gives you every specification, every circuit, every disassembly step and every troubleshooting path in one document. Whether you are chasing a failure code on the machine monitor, setting up the pump PC or LS control circuit, tearing down a travel motor, rebuilding a swing machinery assembly, replacing the engine rear oil seal, or simply looking up the correct tightening torque for the cylinder head bolts, the answer is in here. The troubleshooting sections alone cover hundreds of failure codes and symptoms, each with a structured, numbered diagnostic procedure that tells you what to measure, where to measure it, and what the reading means. The disassembly and assembly procedures include the special tools required, the tightening torques, the coating materials and the safety precautions. This is a complete, print-ready PDF – no shipping, no waiting, no lost pages. Download it after payment and open it on any device: laptop in the workshop, tablet on the machine, or printed pages for the bench. Bookmark it, search it, print the sections you need. For anyone who runs, repairs or maintains a PC500LC-10R, this manual is the reference that makes the job faster and correct.