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PRODUCT IDENTIFICATION

1.4.3 ENGINE SERIAL NUMBER AND EX-

HAUST GAS EMISSION PLATE

1.4.4 TRAVEL REDUCTION GEAR SERIAL

NUMBER

RWA08650

The engine serial number is stamped on the plate positioned on

the top of the engine cylinder head cover.

The exhaust gas emission plate is applied on the top of the en-

gine cylinder head cover.

RWAA10520

RWA04970

The serial number of the travel reduction gear is stamped on the

plate positioned on the outer side of the reduction gear cover.

Foreword3
Information on Safety4
Introduction6
- Intended Uses6
- Improper or Unauthorized Uses6
- Main Characteristics7
- Running-In7
Product Identification8
- Machine Serial Number8
- Machine Identification Plate8
- Engine Serial Number and Exhaust Gas Emission Plate9
- Travel Reduction Gear Serial Number9
- SWING MOTOR SERIAL NUMBER (for PC20R Only)10
- SWING REDUCTION GEAR SERIAL NUMBER (for PC27R Only)10
- Cab Serial Number10
- Serial Numbers and Dealer's Address11
- Table of Contents13
Safety and Accident Prevention21
Safety, Noise and Vibration Plates22
- Position of the Safety Plates22
- Pictograms and Relevant Meanings24
- Position of the Noise Plates on Machines with Cab28
- Position of the Noise Plates on Machines with Canopy29
- Vibrations to Which the Operator Is Subjected29
General Precautions30
- General Safety Rules30
- Safety Devices and Guards30
- Clothing and Personal Protection Items30
- Unauthorized Modifications31
- Leaving the Operator's Seat31
- Getting on and off the Machine32
- Preventing Fires Due to Fuel and Oil32
- Preventing Burns33
- Preventing Damage Due to Asbestos Powder33
- Preventing Damage Caused by the Work Equipment34
- Fire Extinguishers and First Aid Kit34
- Precautions Concerning the Cab Structure34
- Precautions Concerning the Equipment34
Precautions to be Taken before Starting the Engine35
- Safety on the Work Site35
- Fire Prevention35
- Precautions to be Taken for the Operator's Cab35
- Room Ventilation36
- Precautions to be Taken for the Lights36
- Cleaning the Windows - Checking the Windshield Wiper Blades36
Precautions to be Taken When Working37
- Starting the Engine37
- Check the Direction before Starting the Machine37
- Checks for Travelling in Reverse37
- Moving the Machine38
- Moving on Slopes39
- Working on Slopes40
- Unauthorized Operations40
- Preventing Electrocution41
- Visibility42
- Working on Icy or Snow-Covered Surfaces42
- Preventing Damage Caused by the Work Equipment42
- Working on Loose Ground42
- Parking the Machine43
Transporting the Machine on Motor Vehicles44
- Loading and Unloading44
- Transport44
Battery45
- Preventing Risks that May be Due to the Battery45
- Starting with Booster Cables45
Precautions for the Removal46
Precautions for Maintenance47
- Warning Plates47
- Tools47
- Personnel47
- Equipment48
- Working under the Machine48
- Cleaning the Machine48
- Use of the Engine During Maintenance Operations49
- Periodical Change of the Parts that Are Critical for Safety49
- Stop the Engine before Carrying out any Maintenance Operation49
  - Or Inspection49
- Rules to be Followed During Fuel or Oil Topping up50
- Checking the Coolant Level in the Radiator50
- Using Lamps50
- Precautions Concerning the Battery and the Alternator51
- Precautions Concerning the Starter51
- Handling High-Pressure Pipes52
- Precautions to be Taken When Handling High-Pressure Oil52
- Precautions for Maintenance Operations at High Temperatures and High Pressure52
- Cooling Fan and Belt53
- Waste Materials53
- PRECAUTIONS for the USE of the Synthetic Biodegradable Oil Type HEES53
Safety Locks56
- Machine Locks56
General Views57
- General View of the Machine with Cab57
- General View of the Machine with Canopy58
- General View of the Driver's Seat59
Instruments and Controls60
- Instruments60
- Warning Lights62
- Switches and Push Buttons64
- Ignition Switch65
- Electrical Accessories67
- Machine Controls69
Fuses and Relays77
- Fuses77
  - Equipment Fuses77
  - Main Fuse78
- Relays79
Guards and Driver's Seat80
- Engine Hood80
- Right Counterweight81
- Canopy81
- Cab82
- Ventilation and Heating85
- Seat86
- Safety Belt86
- Emergency Exit87
- Technical Documentation Case87
- Fire Extinguisher88
- First Aid Kit88
Use of the Machine89
- Checks before Starting the Engine89
- Starting the Engine91
  - Starting with Warm Engine or in Temperate Climates91
  - Starting with Cold Engine or in Cold Climates92
- Warming the Engine93
- Heating the Hydraulic Oil93
- How to Move the Machine93
Parking the Machine98
- Parking on Level Ground98
- Parking on Slopes99
Stopping the Engine100
Transporting the Machine on Motor Vehicles101
- Loading and Unloading the Machine101
- Transport102
Lifting the Machine103
Precautions to be Taken in the Cold Season104
- Fuel and Lubricants104
- Coolant104
- Battery104
- Other Precautions105
- Precautions to be Taken at the End of Work105
Precautions to be Taken in the Warm Season106
Using the Work Equipment107
- Organizing the Work Area107
- Positioning the Machine for Digging Operations108
- Digging Method109
- Changing the Bucket110
Long Periods of Inactivity111
- Before the Period of Inactivity111
- During the Period of Inactivity112
- After the Period of Inactivity112
Troubleshooting113
- Occurrences that Are Not Failures113
- How to Remove the Machine113
- After the Fuel Has Run out114
- If the Battery Is down114
  - Starting with Booster Cables115
- Other Troubles116
Maintenance119
Guide to Maintenance120
Maintenance Notes122
- Notes Regarding the Engine122
- Notes Regarding the Hydraulic System123
- Notes Regarding the Electrical System124
- Notes Regarding Lubrication124
- Parts Subject to Wear that Periodically Need Changing125
Fuel, Coolant and Lubricants126
- Homologated Hees Synthetic Biodegradable Lubricants128
Driving Torques for Screws and Nuts129
- Standard Driving Torques129
- Specific Driving Torques129
Lubrication130
- Lubrication Diagram130
Periodical Change of the Components that Are Connected with Safety131
- Critical Parts for Safety132
Maintenance Plan135
- Maintenance Every 100 Hours of Operation136
- Maintenance Every 250 Hours of Operation136
- Maintenance Every 1000 Hours of Operation137
- Maintenance Every 2000 Hours of Operation137
- When Required138
- Maintenance Intervals in Case of Use of the Demolition Hammer (Breaker)149
  - Changing the Hydraulic Oil Filter149
  - Changing the Hydraulic Oil149
- Checks before Starting150
- Maintenance after the First 50 Hours of Operation154
  - (Only for Machines in Which the Synthetic Biodegradable Oil Type HEES Is Used)154
- Maintenance Every 100 Hours of Operation155
  - Lubricating the Joints and the Ball-Bearing Ring155
- Maintenance after the First 250 Hours of Operation157
- Maintenance Every 250 Hours of Operation157
- Maintenance after the First 500 Hours of Operation161
  - (Only for Machines in Which the Synthetic Biodegradable Oil Type HEES Is Used)161
- Maintenance Every 500 Hours of Operation161
- Maintenance Every 1000 Hours of Operation166
  - Changing the Oil in the Travel Reduction Gears166
- Maintenance Every 2000 Hours of Operation167
Technical Specifications173
Technical Data174
- STANDARD OVERALL DIMENSIONS (for Model PC20R Only)174
- Technical Characteristics Pc20R175
- STANDARD OVERALL DIMENSIONS (for Model PC27R Only)176
- Technical Characteristics Pc27R177
- LIFTING CAPACITY with CAB (for Model PC20R Only)178
- LIFTING CAPACITY with CANOPY (for Model PC20R Only)179
- LIFTING CAPACITY with CAB (for Model PC27R Only)180
- LIFTING CAPACITY with CANOPY (for Model PC27R Only)181
6.1 Authorized Optional Equipment184
Authorized Optional Equipment184
- Precautions Regarding Safety184
- Precautions Regarding the Installation of Equipment185
- Characteristics of the Optional Equipment186
Arrangement for the Installation of the Demolition Hammer (Breaker)187
- Description and Control187
- Use of the Demolition Hammer and Rules to be Observed187
- Installing and Removing the Demolition Hammer191
  - Installing the Hammer191
  - Removing the Hammer192
- Maintenance192
Arrangement for the Operation of Optional Equipment193
- Selection Valve (1)193
- Control Pedal (2)194
- Assemblying and Connecting the Equipment195
- Maintenance196

Brand	Komatsu
Model	PC20R-8
Category	Excavators
Language	English

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