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PC20R-8
Komatsu PC20R-8 User Manual
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77
FUSES AND RELAYS
3.4.2
RELA
YS
POSITION
DESCRIPTION
1
Horn relay
2
Engine a
coustic
alarm
3
Preheatin
g warnin
g light timer
4
Preheatin
g relay
5
Solenoid
excitat
ion timer (sta
rt)
6
Solenoid
excitat
ion relay
(start)
7
Safety rel
ay
The horn re
lay is po
sitioned
insi
de the righ
t control
box, under
the dashbo
ard, while
the other
relays
are grouped
on a sing
le base p
ositione
d inside
the le
ft contro
l box.
RWA10040
1
RW
A10050
3
2
4
5
6
RW
A10060
7
RW
AA0890
78
80
Table of Contents
Foreword
3
Information on Safety
4
Introduction
6
Intended Uses
6
Improper or Unauthorized Uses
6
Main Characteristics
7
Running-In
7
Product Identification
8
Machine Serial Number
8
Machine Identification Plate
8
Engine Serial Number and Exhaust Gas Emission Plate
9
Travel Reduction Gear Serial Number
9
SWING MOTOR SERIAL NUMBER (for PC20R Only)
10
SWING REDUCTION GEAR SERIAL NUMBER (for PC27R Only)
10
Cab Serial Number
10
Serial Numbers and Dealer's Address
11
Table of Contents
13
Safety and Accident Prevention
21
Safety, Noise and Vibration Plates
22
Position of the Safety Plates
22
Pictograms and Relevant Meanings
24
Fuel Filter
25
Engine Coolant
25
Lifting Point
27
Position of the Noise Plates on Machines with Cab
28
Position of the Noise Plates on Machines with Canopy
29
Vibrations to Which the Operator Is Subjected
29
General Precautions
30
General Safety Rules
30
Safety Devices and Guards
30
Clothing and Personal Protection Items
30
Unauthorized Modifications
31
Leaving the Operator's Seat
31
Getting on and off the Machine
32
Preventing Fires Due to Fuel and Oil
32
Preventing Burns
33
Preventing Damage Due to Asbestos Powder
33
Preventing Damage Caused by the Work Equipment
34
Fire Extinguishers and First Aid Kit
34
Precautions Concerning the Cab Structure
34
Precautions Concerning the Equipment
34
Precautions to be Taken before Starting the Engine
35
Safety on the Work Site
35
Fire Prevention
35
Precautions to be Taken for the Operator's Cab
35
Room Ventilation
36
Precautions to be Taken for the Lights
36
Cleaning the Windows - Checking the Windshield Wiper Blades
36
Precautions to be Taken When Working
37
Starting the Engine
37
Check the Direction before Starting the Machine
37
Checks for Travelling in Reverse
37
Moving the Machine
38
Moving on Slopes
39
Working on Slopes
40
Unauthorized Operations
40
Preventing Electrocution
41
Visibility
42
Working on Icy or Snow-Covered Surfaces
42
Preventing Damage Caused by the Work Equipment
42
Working on Loose Ground
42
Parking the Machine
43
Transporting the Machine on Motor Vehicles
44
Loading and Unloading
44
Transport
44
Battery
45
Preventing Risks that May be Due to the Battery
45
Starting with Booster Cables
45
Precautions for the Removal
46
Precautions for Maintenance
47
Warning Plates
47
Tools
47
Personnel
47
Equipment
48
Working under the Machine
48
Cleaning the Machine
48
Use of the Engine During Maintenance Operations
49
Periodical Change of the Parts that Are Critical for Safety
49
Stop the Engine before Carrying out any Maintenance Operation
49
Or Inspection
49
Rules to be Followed During Fuel or Oil Topping up
50
Checking the Coolant Level in the Radiator
50
Using Lamps
50
Precautions Concerning the Battery and the Alternator
51
Precautions Concerning the Starter
51
Handling High-Pressure Pipes
52
Precautions to be Taken When Handling High-Pressure Oil
52
Precautions for Maintenance Operations at High Temperatures and High Pressure
52
Cooling Fan and Belt
53
Waste Materials
53
PRECAUTIONS for the USE of the Synthetic Biodegradable Oil Type HEES
53
Safety Locks
56
Machine Locks
56
General Views
57
General View of the Machine with Cab
57
General View of the Machine with Canopy
58
General View of the Driver's Seat
59
Instruments and Controls
60
Instruments
60
Warning Lights
62
Switches and Push Buttons
64
Ignition Switch
65
Electrical Accessories
67
Machine Controls
69
Fuses and Relays
77
Fuses
77
Equipment Fuses
77
Main Fuse
78
Relays
79
Guards and Driver's Seat
80
Engine Hood
80
Right Counterweight
81
Canopy
81
Cab
82
Ventilation and Heating
85
Seat
86
Safety Belt
86
Emergency Exit
87
Technical Documentation Case
87
Fire Extinguisher
88
First Aid Kit
88
Use of the Machine
89
Checks before Starting the Engine
89
Visual Checks
89
Daily Checks
89
Operational Checks
90
Starting the Engine
91
Starting with Warm Engine or in Temperate Climates
91
Starting with Cold Engine or in Cold Climates
92
Warming the Engine
93
Heating the Hydraulic Oil
93
How to Move the Machine
93
Steering (Changing Direction)
95
Moving on Slopes
96
Maximum Immersion Depth
97
Parking the Machine
98
Parking on Level Ground
98
Parking on Slopes
99
Stopping the Engine
100
Transporting the Machine on Motor Vehicles
101
Loading and Unloading the Machine
101
Transport
102
Lifting the Machine
103
Precautions to be Taken in the Cold Season
104
Fuel and Lubricants
104
Coolant
104
Battery
104
Other Precautions
105
Precautions to be Taken at the End of Work
105
Precautions to be Taken in the Warm Season
106
Using the Work Equipment
107
Organizing the Work Area
107
Positioning the Machine for Digging Operations
108
Digging Method
109
Changing the Bucket
110
Long Periods of Inactivity
111
Before the Period of Inactivity
111
During the Period of Inactivity
112
After the Period of Inactivity
112
Troubleshooting
113
Occurrences that Are Not Failures
113
How to Remove the Machine
113
After the Fuel Has Run out
114
If the Battery Is down
114
Starting with Booster Cables
115
Other Troubles
116
Electrical Circuit
116
Hydraulic System
116
Engine
117
Maintenance
119
Guide to Maintenance
120
Maintenance Notes
122
Notes Regarding the Engine
122
Engine Oil
122
Coolant
122
Fuel
123
Notes Regarding the Hydraulic System
123
Notes Regarding the Electrical System
124
Notes Regarding Lubrication
124
Parts Subject to Wear that Periodically Need Changing
125
Fuel, Coolant and Lubricants
126
Homologated Hees Synthetic Biodegradable Lubricants
128
Driving Torques for Screws and Nuts
129
Standard Driving Torques
129
Specific Driving Torques
129
Lubrication
130
Lubrication Diagram
130
Periodical Change of the Components that Are Connected with Safety
131
Critical Parts for Safety
132
Maintenance Plan
135
Maintenance Every 100 Hours of Operation
136
Maintenance Every 250 Hours of Operation
136
Maintenance Every 1000 Hours of Operation
137
Maintenance Every 2000 Hours of Operation
137
When Required
138
Washing the Cooling Circuit
138
Draining the Fuel Tank
139
Checking the Electrical System
140
Checking the Steel Track Tension
140
Checking the Rubber Tracks
142
Checking the Rubber Track Tension
144
Changing the Rubber Track
146
Checking, Cleaning or Changing the Air Cleaner Cartridge
148
Maintenance Intervals in Case of Use of the Demolition Hammer (Breaker)
149
Changing the Hydraulic Oil Filter
149
Changing the Hydraulic Oil
149
Checks before Starting
150
Various Checks
150
Checking the Coolant Level
150
Checking the Fuel Level
151
Checking the Engine Oil Level
151
Checking the Oil Level in the Hydraulic Circuit
152
Checking the Air Cleaner Clogging Indicator
153
Checking the Fuel Filter for Sediment and Water
153
Maintenance after the First 50 Hours of Operation
154
(Only for Machines in Which the Synthetic Biodegradable Oil Type HEES Is Used)
154
Maintenance Every 100 Hours of Operation
155
Lubricating the Joints and the Ball-Bearing Ring
155
Maintenance after the First 250 Hours of Operation
157
Maintenance Every 250 Hours of Operation
157
Adjusting the Fan Belt Tension
157
Checking the Battery Electrolyte Level
158
Checking the Oil Level in the Travel Reduction Gears
158
Changing the Hydraulic System Oil Filter
159
Changing the Engine Oil
160
Maintenance after the First 500 Hours of Operation
161
(Only for Machines in Which the Synthetic Biodegradable Oil Type HEES Is Used)
161
Maintenance Every 500 Hours of Operation
161
Changing the Engine Oil Filter
161
Changing the Fuel Filter
162
Changing the Fuel Pump Precleaner
163
Cleaning the Outside of the Radiators
164
DRAINING the HYDRAULIC OIL TANK (Only for Machines in Which the Synthetic Biodegradable Oil Type HEES Is Used)
165
Maintenance Every 1000 Hours of Operation
166
Changing the Oil in the Travel Reduction Gears
166
Maintenance Every 2000 Hours of Operation
167
Changing the Hydraulic System Oil and Cleaning the Suction Filter
167
Changing the Coolant
170
Checking and Adjusting the Engine Valve Clearance
171
Checking the Alternator and the Starter
171
Technical Specifications
173
Technical Data
174
STANDARD OVERALL DIMENSIONS (for Model PC20R Only)
174
Technical Characteristics Pc20R
175
STANDARD OVERALL DIMENSIONS (for Model PC27R Only)
176
Technical Characteristics Pc27R
177
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 Equipment
184
Authorized Optional Equipment
184
Precautions Regarding Safety
184
Precautions Regarding the Installation of Equipment
185
Characteristics of the Optional Equipment
186
Arrangement for the Installation of the Demolition Hammer (Breaker)
187
Description and Control
187
Use of the Demolition Hammer and Rules to be Observed
187
Installing and Removing the Demolition Hammer
191
Installing the Hammer
191
Removing the Hammer
192
Maintenance
192
Arrangement for the Operation of Optional Equipment
193
Selection Valve (1)
193
Control Pedal (2)
194
Assemblying and Connecting the Equipment
195
Maintenance
196
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Komatsu PC20R-8 Specifications
General
Brand
Komatsu
Model
PC20R-8
Category
Excavators
Language
English
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