2001 Komatsu PC150-6K / PC150LC-6K Hydraulic Excavator Factory Service Manual (P/N UEBM000701)

Komatsu factory shop manual UEBM000701, printed in September 2001, covers the PC150-6K and PC150LC-6K hydraulic excavators. Both models are listed for S/N K32001 and up and K34001 and up.

Text search, bookmarks, and diagram detail: Most service text is searchable, but some tables and diagram labels are not. Embedded bookmarks provide section and procedure navigation; the external MAIN MENU file is not included. Small wiring labels require zooming, and some hydraulic and electrical foldout annotations contain garbled characters.

• CLSS hydraulics: Main pump, control valve, TVC and LS pressure testing, EPC solenoid valves, PPC shuttle valves, hydraulic drift diagnosis, and oil-leakage measurement.

• Electrical diagnosis: Governor and pump controller troubleshooting, Machine Monitor System tests, service code tables, connector locations, pin-number references, and electrical wiring diagrams.

• Travel and swing repair: Final drive and swing machinery disassembly and assembly, brake checks, HMV110-2 travel motor coverage, and swing circle bearing-clearance testing.

• Undercarriage: Track shoe tension adjustment, recoil spring service, and idler, track roller, and carrier roller disassembly and assembly.

• Work equipment: Boom, arm, and bucket removal and installation, hydraulic cylinder repair procedures, and center swivel joint disassembly and assembly.

• Engine installation and cooling: Engine/main pump removal and installation, governor motor lever-stroke adjustment, engine speed sensor adjustment, and radiator and hydraulic oil cooler service.

Written for service technicians performing workshop repairs, this manual assumes access to hydraulic test equipment, lifting equipment, and the specified service tools.

CLSS Testing and Hydraulic Fault Isolation

The Testing and Adjusting section covers pilot circuit pressure, LS differential pressure, and work equipment, swing, and travel circuit tests. Its hydraulic drift checks distinguish cylinder packing leakage from control valve or boom holding valve faults, helping identify the assembly that needs attention before disassembly.

Air-bleeding coverage includes a chart tied to the component serviced, plus the pump bleeding procedure. Hydraulic circuit diagrams explain the CLSS system and combined boom/arm operation. Separate fuel and hydraulic tank drawings identify the K32001-and-up and K34001-and-up configurations.

Electronic Control and Machine Monitor Diagnosis

Troubleshooting charts separate communication faults, governor control, engine symptoms, pump control, input signals, hydraulic/mechanical problems, and monitor faults. The monitor section explains stored service codes and machine-data displays for controller inputs and outputs.

The Electrical Circuit Diagrams for E Mode, C Mode, F Mode, and M Mode support these diagnostic sections. Connector mounting-location drawings and pin-number charts connect the circuit references to the machine wiring.

Travel, Swing, and Work Equipment Repair

Power train and track frame drawings accompany explanations of the HMV110-2 travel motor, its parking brake, and brake valve. The final drive and swing machinery repair sections go into reduction-gear disassembly, bearing and seal installation, and brake seal checks.

The center swivel joint procedure flags slipper-seal and O-ring damage during rotor installation. Hydraulic cylinder assembly instructions also address damage to packings, dust seals, and O-rings, including the risk of forcing the backup ring into place.

PC150LC-6K working-range drawings cover the 1.85m, 2.25m, 2.62m, and 2.9m arms. Work equipment maintenance illustrations distinguish one-piece and two-piece booms. ESCO Helilok adapter-welding instructions cover lip adapters and corner-adapter modification.

Engine Scope, Service Tools, and Inspection Standards

The Komatsu SA4D102E-1 coverage concerns its installation, controls, cooling connections, and symptom-based troubleshooting. Internal engine overhaul requires the separate 102 Service Engine Shop Manual, which is not included.

The Maintenance Standard section supplies component inspection criteria and wear limits. Reference material includes the Table of Judgement Standard Value, electrical test specifications, fluid capacities, standard tightening torques, and conversion tables. Some cylinder torque and wear-limit tables carry PC160/PC180 headings and require model-specific confirmation before use.

The special-tool list identifies the 790-101-2501 push-puller for center swivel joint work and 790-331-1110 wrench for swing circle fasteners. Hydraulic testing and work beneath raised equipment require the manual's pressure-release, blocking, and lifting precautions.

English PDF and Included Pages

Section 90, “Others,” appears in the contents but is not included in this file. This is one printable 688-page PDF: 21 pages of front matter, 10 General, 155 Structure and Function, 282 Testing and Adjusting, 180 Disassembly and Assembly, and 40 Maintenance Standard. That total already includes the cover, contents, three revision-list pages, three pages of ESCO adapter-welding instructions, and 36 blank, memo, or heading-only pages.