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Komatsu PC20R-8 User Manual

Komatsu PC20R-8
196 pages
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PC20R-8
WEAM000101
PC27R-8
Operation &
Maintenance Manual
HYDRAULIC EXCAVATOR
SERIAL NUMBER
PC20R-8 - F30791 and up
PC27R-8 - F31103 and up
Unsafe use of this machine may cause serious injury
or death. Operators and maintenance personnel
must read this manual before operating or
maintaining this machine. This manual should be
kept inside the cab for reference and periodically
reviewed by all personnel who will come into contact
with the machine.
WARNING

Table of Contents

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Komatsu PC20R-8 Specifications

General IconGeneral
BrandKomatsu
ModelPC20R-8
CategoryExcavators
LanguageEnglish

Summary

Foreword

Information on Safety

Safety Symbols and Warnings

Explains safety symbols and warnings used in the manual and on the machine.

Introduction to Komatsu Utility Machines

Intended Uses

Defines the primary applications of the Komatsu Utility machines.

Improper or Unauthorized Uses

Lists forbidden applications and advises dealer consultation for specific uses.

Main Characteristics

Highlights key features and operational aspects of the machines.

Product Identification

Machine Serial Number Location

Details the location of the machine's serial number on the frame.

Machine Identification Plate Details

Explains the CE mark and details found on the identification plate.

Safety, Noise, and Vibration Plates

Position of Safety Plates

Instructions on maintaining safety plates and their locations on machines.

Pictograms and Their Meanings

Explanation of warning and danger pictograms used on the machine.

General Precautions for Operation

General Safety Rules

Essential safety rules for operators and maintenance personnel.

Preventing Fires Due to Fuel and Oil

Precautions to prevent fires caused by fuel and oil.

Getting On and Off the Machine

Safe mounting and dismounting procedures.

Precautions Before Starting the Engine

Safety on the Work Site

Covers site safety, ground conditions, and utility line awareness.

Fire Prevention Measures

Removing flammables and checking for leaks to prevent fires.

Precautions When Working

Starting the Engine Safely

Critical steps and safety checks before starting the engine.

Moving on Slopes Safely

Safety guidelines for operating on slopes, including bucket positioning.

Preventing Electrocution

Safety measures and minimum distances when working near power lines.

Parking the Machine Safely

Procedures for parking on level ground and slopes.

Transporting the Machine

Loading and Unloading Procedures

Safety precautions for loading and unloading the machine.

Battery Precautions

Battery Risks and Handling

Battery acid hazards, hydrogen gas, short circuits, and proper handling.

Starting with Booster Cables

Jump-starting procedures and safety precautions.

Maintenance Precautions

Using Warning Plates

Using plates to prevent accidental engine start during maintenance.

Working Under the Machine

Safety measures for working underneath the machine.

Stopping Engine for Maintenance

Mandates engine stop before maintenance and engaging safety locks.

Fuel and Oil Topping Up Safety

Safety rules for refueling and topping up fluids, emphasizing fire prevention.

Safety Locks

Machine Locking Mechanisms

Overview of machine locking mechanisms for safety.

General Views of the Machine

Machine View with Cab

Labeled diagram showing components of the machine with a cab.

Instruments and Controls

Machine Instruments

Description of hour meter, coolant temp, and fuel level indicators.

Warning Lights Explained

Explanation of various warning lights and their meanings.

Switches and Push Buttons

Description of fan switch, lights, ignition, and horn controls.

Machine Control Levers and Pedals

Overview of control levers and pedals for machine operation.

Guards and Driver's Seat

Safety Belt Usage and Maintenance

Proper use and maintenance of the safety belt.

Using the Machine

Checks Before Starting Engine

Visual and daily checks required before starting engine operation.

Starting the Engine Procedures

Procedures for starting the engine in different climate conditions.

Moving the Machine Safely

Instructions on moving the machine, steering, and operating on slopes.

Parking the Machine

Parking on Level Ground

Steps for safely parking the machine on level ground.

Guide to Maintenance

Maintenance Notes

Parts Subject to Wear

List of parts requiring periodic replacement based on wear.

Fuel, Coolant, and Lubricants

Homologated HEES Biodegradable Lubricants

Approved biodegradable hydraulic oils for use in the machine.

Periodical Change of Safety Components

Critical Parts for Safety

Lists safety-critical components requiring periodic replacement.

Maintenance Plan Schedule

Maintenance When Required

Maintenance tasks performed as needed.

Checks Before Starting

Essential pre-operation checks.

500 Hours Maintenance

Maintenance schedule for every 500 hours of operation.

Technical Data

PC20R Overall Dimensions

Physical dimensions of the PC20R model.

PC20R Technical Characteristics

Key specifications for the PC20R model.

PC27R Overall Dimensions

Physical dimensions of the PC27R model.

PC27R Technical Characteristics

Key specifications for the PC27R model.

PC20R Lifting Capacity (Cab)

Lifting capacities for the PC20R model equipped with a cab.

PC27R Lifting Capacity (Cab)

Lifting capacities for the PC27R model equipped with a cab.

Authorized Optional Equipment

Safety Precautions for Optional Equipment

Safety rules for installing and using optional equipment.

Optional Equipment Characteristics

Specifications for various optional attachments.

Demolition Hammer (Breaker) Installation

Hammer Use and Rules

Correct usage and rules for the demolition hammer.

Installing and Removing the Hammer

Procedures for installing and removing the demolition hammer.

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