Komatsu PC350LC-8 PC350HD-8 Hydraulic Excavator Shop Manual – CEBM007501 (October 2010)

Description

Komatsu PC350LC-8 and PC350HD-8 Hydraulic Excavator Shop Manual

This is the complete Komatsu shop manual for the PC350LC-8 and PC350HD-8 hydraulic excavators. Published in October 2010 under document number CEBM007501, this manual covers serial numbers PC350LC-8 A10001 and up, and PC350HD-8 A00001 and up. It is the definitive technical resource for professionals who service, repair, and maintain these machines.

File Details

• Manual Type: Shop Manual (Service and Repair)
• Brand: Komatsu
• Models Covered: PC350LC-8, PC350HD-8
• Serial Numbers: PC350LC-8 A10001 and up; PC350HD-8 A00001 and up
• Engine: Komatsu SAA6D114E-3 diesel engine
• Document Number: CEBM007501
• Edition/Date: October 2010
• Language: English
• File Format: PDF

Chapters Covered

The Komatsu PC350LC-8 PC350HD-8 shop manual is divided into major sections covering every aspect of the machine:

• 01 General — Specification dimension drawings, working ranges, specifications, weight table, fuel, coolant and lubricants
• 10 Structure, Function and Maintenance Standard — Engine, power train, undercarriage and frame, hydraulic system, work equipment, electrical system, electronic control system, monitor system, KOMTRAX terminal system
• 20 Standard Value Tables — Engine related, chassis related, hydraulic pressure, swing, travel, work equipment
• 30 Testing and Adjusting — Chassis service tools, engine speed, air boost pressure, exhaust gas color, valve clearance, compression pressure, blow-by pressure, engine oil pressure, fuel pressure, fuel return rate, fan belt, alternator belt, swing circle bearings, track shoe tension, oil pressure in work equipment, swing and travel circuits, control circuit oil pressure, pump PC oil pressure, pump LS oil pressure, solenoid valve output pressure, PPC valve output pressure, work equipment valve adjustment, swing PPC valve adjustment, hydraulic drift in work equipment, releasing hydraulic pressure, bleeding air from various systems, machine monitor special functions
• 40 Troubleshooting — Failure codes table, fuse locations, general information, connection table for connector pin numbers, failure code diagnostics, E-mode (electrical system), H-mode (hydraulic and mechanical systems)
• 50 Disassembly and Assembly — Engine components, radiator, hydraulic oil cooler, aftercooler, engine and hydraulic pump, final drive, swing motor and swing machinery, swing circle, carrier roller, track roller, idler, recoil spring, sprocket, track shoe, revolving frame, counterweight, center swivel joint, hydraulic tank, control valve, hydraulic pump, work equipment PPC valve, travel PPC valve, hydraulic cylinder, work equipment, cab, floor frame, electrical system
• 60 Air Conditioner — Structure and function, testing and adjusting, troubleshooting, refrigerant handling, compressor oil, desiccant replacement
• 90 Diagrams and Drawings — Hydraulic diagram, electrical circuit diagrams (5 sheets), electrical connector arrangement diagram

What This Manual Gives You

This Komatsu PC350LC-8 PC350HD-8 shop manual is not a generic overview. It is the same technical documentation used by professional service technicians to diagnose, repair, and overhaul these specific excavator models. Every procedure is tied to the serial numbers listed, ensuring the specifications and tolerances you apply are correct for the machine in front of you.

The structure, function and maintenance standard chapter explains how each component works and what to check when inspecting disassembled parts. The standard value tables give you the factory specifications for new machines and the service limits for wear, so you can judge whether a part needs replacement or is still within tolerance. The testing and adjusting section walks through every measurement and calibration procedure, from engine speed and compression to hydraulic pump pressures and PPC valve outputs.

Troubleshooting is covered in exceptional depth, with a complete failure codes table, connector pin number reference, and dedicated troubleshooting flows for both electrical and hydraulic/mechanical systems. Whether you are chasing an intermittent fault or diagnosing a hard failure, this manual gives you the diagnostic path.

The disassembly and assembly chapter covers every major component with removal, installation, disassembly, and assembly procedures, including tightening torques, special tools, and assembly precautions. The hydraulic and electrical diagrams at the end provide the circuit-level detail needed for tracing lines and understanding system interactions.

Who This Manual Is For

This Komatsu PC350LC-8 PC350HD-8 repair manual is intended for professional mechanics, service technicians, fleet maintenance managers, and serious owner-operators who need factory-level information for these excavators. It assumes a working knowledge of heavy equipment systems and is not a basic operator’s guide. If you are performing engine overhauls, hydraulic pump repairs, final drive rebuilds, electrical troubleshooting, or routine maintenance to factory specifications, this manual provides the procedures and data you need.

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Why This Komatsu Shop Manual Matters

Working on a 35-ton hydraulic excavator without the correct specifications is how expensive mistakes happen. A hydraulic pressure set too high can damage components. A torque value applied incorrectly can cause a joint to fail. A troubleshooting step skipped can lead to a repeat failure. This manual gives you the exact values, procedures, and diagnostic logic that Komatsu specifies for the PC350LC-8 and PC350HD-8. It covers the Komatsu SAA6D114E-3 diesel engine, the hydraulic system with its closed-center load sensing (CLSS) architecture, the electronic control system, and all major mechanical assemblies.

Get Instant Access

The Komatsu PC350LC-8 PC350HD-8 hydraulic excavator shop manual is delivered as an instant PDF download. No shipping, no waiting. You can view it on any device — laptop, tablet, or smartphone — and print the pages you need for the workshop. Whether you are servicing a single machine or managing a fleet, this manual is a permanent reference you will return to again and again.