1998-2003 Komatsu PC340-6K, PC340LC-6K, PC340NLC-6K Excavator Shop Manual

Get reliable repair information for your Komatsu PC340-6K, PC340LC-6K, or PC340NLC-6K excavator. This shop manual covers maintenance and repair procedures, detailing component structures and functions. Part number UEBM000901.

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Document Details

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Document Number / Seller:
30244 / Sandra Stewart
File Size:
28.36 MB
File Type:
PDF
Language:
English
Pages:
748
Printable:
Yes
Category:
Excavator
Last updated / verified
Dec 27, 2025

Models Covered & Key Technical Specifications

Komatsu PC340-6K, PC340LC-6K & PC340NLC-6K Hydraulic Excavator - Shop Manual (1998-2003) Comprehensive hydraulic excavator repair documentation for PC340-6K, PC340LC-6K, PC340NLC-6K models.

  • Nominal Output Rating: 187.2 kN{kg} signifies the maximum digging force performance.
  • Prescribed Cooling Specs: The radiator cooling system utilizes a CWX-4 core configuration.
  • System Print Rate: Ground pressure averages 0.051 (0.52) kg/cm2 for the standard triple grouser shoe width.
  • Calibrated Precision Specs: The machine has a maximum digging depth of 7,380 mm for optimal excavation.
  • Documented Locking Torques: Specific torque values are detailed for various components to ensure secure assembly.
  • Defined Load Capacity: The bucket capacity is rated at 1.32/1.2 m3 (SAE/CECE) for effective material handling.

Manual Description & Preview

Komatsu PC340-6K, PC340LC-6K & PC340NLC-6K Hydraulic Excavator - Shop Manual (1998-2003) Hydraulic-Guide

Unit-Designations: PC340LC-6K, PC340NLC-6K // Design-Core: Hydraulic Excavator / Komatsu CLSS Logic // Coverage-Scope: Complete repair and maintenance procedures. Fundamentally demanding comprehensive repair procedures are addressed for your Komatsu excavator. Technical chapters are organized around specific systems and procedures. Special procedures are addressed for the hydraulic system, including detailed diagrams and specifications. Verification procedures are included for the engine and power train systems. Repair information is provided for the chassis and undercarriage components. The document includes coverage of the electrical system and all related components.

Component Rating Calibration-Spec
Engine Assembly 1,100 kg N/A
Hydraulic Pump 200 kg N/A
Travel Motor 173 x 2 kg N/A
Track Frame Assembly 8,560 kg N/A

Table

Technical specifications are provided for key components, including engine details, hydraulic system capacities, and weight breakdowns for various assemblies. Procedures for disassembly and assembly are detailed, alongside maintenance standards for proper upkeep. The manual documents torque specifications for fastener fatigue prevention to ensure proper assembly and operation.

FAQ

Confirm the **recommended** diagnostic procedures for the hydraulic system? keyboard_arrow_down

10.0 rpm is the standard swing speed, essential for precise hydraulic operation.

What tools **calibrated** fluid capacity requirements? keyboard_arrow_down

315 L is the tank capacity for the hydraulic system, ensuring sufficient fluid for operation.

Identify the **applicable** component identification? keyboard_arrow_down

The engine is a Komatsu SAA6D108E-2, featuring a 6-cylinder configuration with a 108 x 130 mm bore x stroke.

What procedures **exact** adjustment procedures? keyboard_arrow_down

21.0 degrees is the maximum swing slope angle, crucial for maintaining stability during operation.

Determine the **specific** pressure specifications? keyboard_arrow_down

34.8 ± 0.5 MPa (355 ± 5 kg/cm2) is the set pressure for the main relief valves in the bucket and arm groups.

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