Komatsu PC1250-8R, PC1250SP-8R Hydraulic Excavator Index:

CONTENTS
FOREWORD 1- 1
READ THIS MANUAL 1- 2
SAFETY INFORMATION 1- 4
INTRODUCTION 1- 5
USE OF MACHINE 1- 5
DIRECTIONS OF MACHINE 1- 5
VISIBILITY FROM OPERATOR’S SEAT 1- 6
PRODUCT INFORMATION 1- 7
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE 1- 7
ENGINE SERIAL NUMBER PLATE AND ITS LOCATION 1- 7
SERVICE METER LOCATION 1- 8
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR 1- 8
SAFETY 2- 1
SAFETY 2- 2
SAFETY LABELS 2- 5
LOCATION OF SAFETY LABELS 2- 6
SAFETY LABELS 2- 7
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE 2- 14
PRECAUTIONS BEFORE STARTING OPERATION 2- 14
PREPARATIONS FOR SAFE OPERATION 2- 14
FIRE PREVENTION 2- 16
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE 2- 17
DO NOT GET CAUGHT IN WORK EQUIPMENT 2- 19
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES 2- 19
PROTECTION AGAINST FALLING, FLYING, INTRUDING OBJECTS 2- 20
UNAUTHORIZED MODIFICATION 2- 21
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS 2- 21
PRECAUTIONS RELATED TO CAB GLASS 2- 21
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING 2- 21
PRECAUTIONS FOR OPERATION 2- 22
PRECAUTIONS FOR JOBSITE 2- 22
STARTING ENGINE 2- 24
OPERATION 2- 26
TRANSPORTATION 2- 34
TOWING 2- 35
LIFTING OBJECTS WITH BUCKET 2- 35
PRECAUTIONS FOR MAINTENANCE 2- 36
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE 2- 36
PRECAUTIONS FOR INSPECTION AND MAINTENANCE 2- 40
OPERATION 3- 1
MACHINE VIEW ILLUSTRATIONS 3- 2
OVERALL MACHINE VIEW 3- 2
CONTROLS AND GAUGES 3- 3
DETAILED CONTROLS AND GAUGES 3- 5
MONITORING SYSTEM 3- 5
SWITCHES 3- 34
HANDLING BATTERY ISOLATOR AND STARTER ISOLATOR 3- 41
HANDLING AUTO-GREASING SYSTEM 3- 46
METHOD OF DRAINING, ADDING LUBRICANT AND COOLANT FROM SERVICE PANEL 3- 61

METHOD OF ADDING FUEL 3- 62
CONTROL LEVERS AND PEDALS 3- 63
EMERGENCY EXIT FROM OPERATOR’S CAB 3- 66
DOOR LOCK 3- 66
CAP WITH LOCK 3- 67
HOT AND COOL BOX 3- 69
MAGAZINE BOX 3- 69
ASHTRAY 3- 69
FIRE EXTINGUISHER 3- 69
AIR CONDITIONER CONTROLS 3- 70
RADIO 3- 84
AUXILIARY ELECTRIC POWER 3- 93
FUSE 3- 94
CIRCUIT BREAKER 3- 95
CONTROLLER 3- 97
TOOL BOX 3- 97
GREASE PUMP 3- 98
MACHINE OPERATIONS AND CONTROLS 3-102
BEFORE STARTING ENGINE 3-102
STARTING ENGINE 3-127
AFTER STARTING ENGINE 3-130
STOPPING THE ENGINE 3-141
MACHINE OPERATION 3-144
STEERING THE MACHINE 3-148
SWINGING 3-150
WORK EQUIPMENT CONTROLS AND OPERATIONS 3-151
WORKING MODE 3-153
PROHIBITED OPERATIONS 3-154
GENERAL OPERATION INFORMATION 3-159
TRAVELING ON SLOPES 3-161
ESCAPE FROM MUD 3-163
RECOMMENDED APPLICATIONS 3-164
BUCKET REPLACEMENT 3-165
PARKING MACHINE 3-167
MACHINE INSPECTION AFTER DAILY WORK 3-168
LOCKING 3-169
TRANSPORTATION 3-170
TRANSPORTATION PROCEDURE 3-170
PRECAUTIONS FOR TRANSPORTATION 3-170
LIFTING MACHINE 3-170
SHIPPING MACHINE INFORMATION 3-172
TRANSPORTATION POSTURE 3-173
COLD WEATHER OPERATION 3-181
COLD WEATHER OPERATION INFORMATION 3-181
AFTER DAILY WORK COMPLETION 3-184
AFTER COLD WEATHER SEASON 3-184
LONG TERM STORAGE 3-185
BEFORE STORAGE 3-185
DURING STORAGE 3-185
AFTER STORAGE 3-185
1 – 10
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FOREWORD CONTENTS
STARTING MACHINE AFTER LONG-TERM STORAGE 3-186
TROUBLES AND ACTIONS 3-187
RUNNING OUT OF FUEL 3-187
PHENOMENA THAT ARE NOT FAILURES 3-187
TOWING THE MACHINE 3-188
SEVERE JOB CONDITION 3-188
DISCHARGED BATTERY 3-189
OTHER TROUBLE 3-194
MAINTENANCE 4- 1
MAINTENANCE INFORMATION 4- 2
OUTLINE OF SERVICE 4- 5
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC 4- 5
ELECTRIC SYSTEM MAINTENANCE 4- 10
WEAR PARTS 4- 11
WEAR PARTS LIST 4- 11
RECOMMENDED FUEL, COOLANT, AND LUBRICANT 4- 12
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN
KOMATSU GENUINE OIL 4- 15
TIGHTENING TORQUE SPECIFICATIONS 4- 16
TIGHTENING TORQUE LIST 4- 16
DEFINED LIFE PARTS 4- 17
MAINTENANCE SCHEDULE 4- 19
MAINTENANCE SCHEDULE CHART 4- 19
MAINTENANCE PROCEDURE 4- 22
INITIAL 100 HOURS MAINTENANCE (ONLY AFTER THE FIRST 100 HOURS) 4- 22
INITIAL 500 HOURS MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS) 4- 22
WHEN REQUIRED 4- 23
CHECK BEFORE STARTING 4- 60
EVERY 10 HOURS MAINTENANCE 4- 61
EVERY 100 HOURS MAINTENANCE 4- 62
EVERY 250 HOURS MAINTENANCE 4- 63
EVERY 500 HOURS MAINTENANCE 4- 67
EVERY 1000 HOURS MAINTENANCE 4- 79
EVERY 2000 HOURS MAINTENANCE 4- 94
EVERY 4000 HOURS MAINTENANCE 4-100
EVERY 5000 HOURS MAINTENANCE 4-104
EVERY 8000 HOURS MAINTENANCE 4-108
SPECIFICATIONS 5- 1
SPECIFICATIONS 5- 2
ATTACHMENTS AND OPTIONS 6- 1
GENERAL PRECAUTIONS FOR SAFETY 6- 2
PRECAUTIONS WHEN SELECTING 6- 2
READ THE INSTRUCTION MANUAL THOROUGHLY 6- 2
PRECAUTIONS WHEN REMOVING OR INSTALLING 6- 2
PRECAUTIONS WHEN USING 6- 2
ATTACHMENT GUIDE 6- 4
COMBINATIONS OF WORK EQUIPMENT 6- 4
SELECTION OF TRACK SHOES 6- 6
HANDLING MACHINES EQUIPPED WITH KOMTRAX Plus 6- 7
KOMTRAX Plus INSTALLED, COMMUNICATIONS TERMINAL NOT INSTALLED 6- 7

TROPICAL SPECIFICATION MACHINE 7- 1
WEAR PARTS 7- 2
WEAR PARTS LIST 7- 2
WHEN REQUIRED 7- 3
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT 7- 3
LOADING SHOVEL 8- 1
EXPLANATION OF COMPONENTS 8- 2
SWITCHES 8- 2
FUSE 8- 5
OPERATIONS 8- 6
OPERATION OF WORK EQUIPMENT 8- 6
PRECAUTIONS DURING OPERATION 8- 8
LOADING SHOVEL WORK 8- 12
PRECAUTIONS WHEN DISASSEMBLING MACHINE 8- 13
RELEASING PRESSURE 8- 13
TRANSPORTATION 8- 14
MACHINE CONFIGURATION FOR TRANSPORT 8- 14
WEAR PARTS 8- 21
WEAR PARTS LIST 8- 21
MAINTENANCE 8- 22
CHECK BEFORE STARTING 8- 22
EVERY 10 HOURS MAINTENANCE 8- 24
EVERY 5000 HOURS MAINTENANCE 8- 25
SPECIFICATION 8- 27
COMBINATION OF WORK EQUIPMENT 8- 28
COMBINATION OF WORK EQUIPMENT 8- 28
INDEX 9- 1