1996 Komatsu PC25-1 / PC30-7 / PC40-7 / PC45-1 Excavator Service & Repair Manual

Technician-level documentation for Komatsu PC series mini excavators—including detailed diagrams, specifications, and troubleshooting for models PC25-1, PC30-7, PC40-7, and PC45-1. Manual part number 020S07.

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Document Details

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Document Number / Seller:
30177 / Karen Williams
File Size:
22.40 MB
File Type:
PDF
Language:
English
Pages:
387
Printable:
Yes
Category:
Mini Excavator
Last updated / verified
Dec 22, 2025

Models Covered & Key Technical Specifications

Komatsu Mini Excavator (020S07) Manual: PC25-1, PC30-7, PC40-7, PC45-1 - Service & Repair Manual

Komatsu Excavator Manual | PC Series Folder.

  • Certified Temperature Range: For optimal operation, 40 – 60°C defines the operational limit Protocol.
  • General Thermal Rating: The cooling system requires SAE 10WCD for efficient performance Margin.
  • Design Print Quality: 40.5 mm -- signifies the approximate piston stroke range Architecture.
  • Engineered Tank Capacity: The hydraulic tank requires 45 L for standard operation Bounds.
  • Verified Electrical Load: The engine oil pressure delivers 0.35 – 0.5 MPa Norms.
  • Factory Travel Rate: The engine speed establishes 2,700 rpm as the maximum operational limit Topology.

Professional Workshop Service Manual & Technical Specifications

Komatsu Mini Excavator (020S07) Manual: PC25-1, PC30-7, PC40-7, PC45-1 - Service & Repair Manual

Specification-Class: Komatsu PC Series Manual // Calibration-Scope: Excavator / Hydraulic Logic // Model-Portfolio: 1996 and up.

Content Order: procedures → specs → systems → table → intro

This manual offers detailed documentation for the Komatsu PC series mini excavators, covering models PC25-1, PC30-7, PC40-7, and PC45-1. It provides essential information on maintenance procedures, technical specifications, and system overviews. The document details the operation and functionality of various components and systems, ensuring a thorough understanding for technicians. Specific chapters include "Structure and Function," "Testing and Adjusting," "Disassembly and Assembly," and "Maintenance Standard." This manual also documents torque specifications for bolts and nuts to ensure proper bolt stretch prevention.

Suspension service documentation covers.

Disassembly instructions are documented for.

Wear limits are specified for.

System operation descriptions cover.

The documentation addresses.

Metric Rating Architecture
Engine Speed 2,700 rpm (Max) Specification
Oil Pressure 0.35 – 0.5 MPa Performance Metric
Hydraulic Tank Capacity 45 L System Volume
Piston Stroke 40.5 mm Component Measurement
Cooling System Fluid SAE 10WCD Operational Requirement
Engine Oil Pressure 0.3 kg/cm² (Max) System Monitoring Metric

FAQ

What **calibrated** values are used for the hydraulic system architecture? keyboard_arrow_down

210+10/-0 kg/cm² is the standard value for hydraulic pressure on PC25 and PC30 models at high idling.

Assess the **applicable** tool requirements for troubleshooting. keyboard_arrow_down

A 799-203-1003 Flowmeter kit and a 799-601-7000 Adapter Ass'y are required for troubleshooting various electrical system components.

What **exact** electrical values are specified for the monitor panel? keyboard_arrow_down

10 – 15V is the specified voltage range for the monitor panel when the starting switch is ON.

Confirm the **specific** calibration settings for the travel speed acceleration pedal. keyboard_arrow_down

When the travel speed acceleration solenoid is excited, the pressure oil from the main circuit acts on pilot piston (3), moves pilot piston (3) to the maximum swash plate angle and the motor capacity becomes maximum, setting the travel speed to high.

What **designated** clearance measurements are critical for the blade cylinder? keyboard_arrow_down

The standard value for piston nut width across flat for the blade cylinder is 50 mm, as detailed on page 340 and beyond of the manual.

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Reviews (4)

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The download process was seamless and the support team responded quickly to my queries. Highly recommend!
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Rated 4 out of 5 stars
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I was impressed by the professional service when I needed help. The manual is a must-have for maintenance!
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The manual is incredibly detailed and easy to follow. Perfect for my PC30-7!