Komatsu PW130ES-6K 2003 Excavator Shop Manual Set (P/N UEBM001202)

Both publications follow the factory sections Structure and Function, Testing and Adjusting, Disassembly and Assembly, and Maintenance Standard. Their engine and brake/steer specifications describe different machine builds and should not be treated as interchangeable.

Both cover engine/main-pump assembly removal and installation, but neither provides a full internal engine overhaul chapter.

PDF Search, Circuit Detail, and Page Counts

Search and diagram navigation: Text search in EEBM001701 is limited to selected pages, and its numbered bookmarks are only partly usable. UEBM001202 has searchable text but no embedded bookmarks. Small electrical labels require zooming; some remain difficult to read in EEBM001701. Portions of UEBM001202’s hydraulic circuit diagram are faint.

The ZIP download contains two printable English PDFs totaling 1,246 pages, including front matter, divider pages, and the 19 appended technical and diagram pages within EEBM001701’s page count.

Hydraulic Fault Finding, Drivetrain Repair, and Machine Controls

These selected content highlights outline the repair coverage rather than reproduce the complete contents. Additional topics include air-conditioner compressor belt adjustment and engine-speed sensor adjustment.

• Engine and cooling: Step-by-step engine/main-pump removal and installation, governor-motor adjustment, and radiator and hydraulic oil-cooler removal and installation.

• Hydraulic testing: Main-pump, PC-valve, LS-valve, PPC, EPC, and solenoid pressure checks, with factory judgment values and test conditions.

• Travel and swing: Transmission and axle repair, clutch-control testing, travel-motor replacement, swing-machinery disassembly, and swing-circle removal.

• Brakes and steering: Service and parking-brake circuits, accumulators, Orbitrol steering, emergency-steering operation, and suspension-lock hydraulics.

• Hydraulic component repair: Control-valve teardown, main-relief and pressure-compensation valve service, and hydraulic-cylinder disassembly and assembly.

• Electrical diagnosis: Controller fault finding, monitor service codes, connector and pin tables, wiring diagrams, and circuit-specific troubleshooting charts.

• Work equipment: Boom, arm, bucket, cab, counterweight, outrigger-cylinder, and blade-cylinder removal and installation, plus bucket-adapter welding information.

These manuals suit excavator technicians equipped for hydraulic pressure testing, electrical diagnosis, and lifting major assemblies.

Main Pump, CLSS, and Hydraulic Drift Diagnosis

The hydraulic sections explain the HPV 105 main pump, PC and LS regulation, PPC pumpless system, and Closed Center Load Sensing System (CLSS). The Hydraulic Circuit Diagram connects these controls with the actuators and auxiliary circuits.

Testing extends to LS differential pressure, travel-motor relief, oil leakage, accumulator checks, and air bleeding. Hydraulic-drift procedures distinguish cylinder-packing leakage from control-valve faults, helping technicians assess a sinking boom, arm, or bucket before planning component repair.

Work-equipment test tables distinguish normal relief from Power Max conditions. Suspension-lock specifications separately identify operating and pilot pressures.

Travel-Speed Variants, Transmission, and Axles

The Power Train — 20 Km/h Travel Speed Spec. and Power Train — 30 Km/h Travel Speed Spec. views document different driveline arrangements. Transmission reduction ratios are 2.265:1 and 1.846:1 respectively; the faster configuration adds an automatic rear-travel-motor clutch.

The Clutch Control Circuit (30 Km/h Spec. Only) supports the dedicated pressure-testing section. UEBM001202 reserves internal clutch-unit servicing for specialized personnel.

Transmission and axle repair extends to pinion positioning, bearing preload, gear-backlash adjustment, and output-flange shimming. Component views also cover the PTO coupling and center swivel joint.

Brake and Steering Configurations

The standard shared brake/steer gear pump differs between publications. Italian-specification machines use a tandem arrangement with separate pump sections, documented in the Brake & Steering Circuit (Italian Specification).

Circuit descriptions explain service-brake accumulators, parking-brake pressure switches, the priority valve, and emergency-steering operation. These distinctions help identify the applicable hydraulic layout before selecting test information.

Controller, Engine, and Monitor Troubleshooting

Fault finding is divided into communications N mode, governor-control E mode, engine S mode, pump-control C mode, input-signal F mode, hydraulic/mechanical H mode, and monitor M mode.

Engine charts address starting difficulty, hunting, low output, abnormal smoke, oil consumption, and overheating. Controller sections combine judgment tables with service-code descriptions and related electrical circuits.

The Electrical Wiring Diagram and connector tables support harness and sensor diagnosis. System descriptions also explain the overload warning device, solenoid circuits, pressure switches, and breaker-mode hydraulic control.

Workshop Procedures, Tools, and Inspection Standards

Cylinder repair distinguishes threaded pistons from pistons retained by nuts, with seal, bushing, and piston-ring tooling. Work-equipment views and maintenance standards distinguish one-piece and two-piece booms.

Tool references include the 799-101-5002 hydraulic tester, 790-303-1003 flow meter kit, 799-601-8000 T-adapter kit, and 790-502-1003 cylinder repair stand, alongside dedicated push tools, piston-nut sockets, and seal tools.

The main-pump seal procedure flags shaft damage during seal extraction, while cooler-removal notes identify the core as damage-prone. Transmission and axle instructions address seal-lip damage from direct hammering and incorrect bearing or gear adjustment caused by relying on nominal shim thickness.

Maintenance Standard tables provide component torque references, clearances, wear limits, and inspection criteria for swing machinery, axles, valves, motors, cylinders, outriggers, and work equipment.

For pressure testing, brake-system work, raised work equipment, and rotating driveline checks, follow the shop manual’s specified blocking, pressure-release, and isolation precautions before beginning hands-on repair.

Selected Pump, Tank, and Swing-Inspection Data

Brake/steer gear-pump specifications differ by publication: EEBM001701 lists 18 cc/rev at 160 bar, while UEBM001202 lists 19 cc/rev at 250 bar. Both specify a rated speed of 2,400 rpm.

UEBM001202’s Italian-specification tandem-pump table lists front and rear sections of 14.6 cc/rev and 6.4 cc/rev.

Its K32001-and-up tank section lists 145 liters of hydraulic oil and 246 liters of fuel capacity.

The swing-machinery inspection table specifies 0.13–1.16 mm standard backlash between the swing pinion and swing circle, with a 2.3 mm clearance limit.