Komatsu PC70-8 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- 5
PRODUCT INFORMATION 1- 6
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE 1- 6
ENGINE SERIAL NUMBER PLATE 1- 6
SERVICE METER LOCATION 1- 7
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR 1- 7
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- 36
PRECAUTIONS FOR MAINTENANCE 2- 37
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE 2- 37
PRECAUTIONS FOR INSPECTION AND MAINTENANCE 2- 41
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- 52
CONTROL LEVERS AND PEDALS 3- 56
SUN ROOF 3- 61
WINDSHIELD 3- 62

DOOR LOCK 3- 65
EMERGENCY ESCAPE HAMMER 3- 66
COVER WITH LOCK 3- 67
ENGINE HOOD 3- 68
COOLING COVER 3- 69
AIR CONDITIONER CONTROLS 3- 70
RADIO 3- 83
FUSE 3- 92
FUSIBLE LINK 3- 93
BATTERY DISCONNECT SWITCH 3- 94
AUXILIARY ELECTRIC POWER 3- 95
CONTROLLERS 3- 95
OPERATION MANUAL STORAGE 3- 96
CUP HOLDER 3- 96
TOOL BOX 3- 96
GREASE PUMP HOLDER 3- 96
ASHTRAY 3- 97
FIRE EXTINGUISHER 3- 97
MACHINE OPERATIONS AND CONTROLS 3- 98
BEFORE STARTING ENGINE 3- 98
STARTING ENGINE 3-119
AFTER STARTING ENGINE 3-124
STOPPING THE ENGINE 3-133
MACHINE OPERATION 3-134
STEERING THE MACHINE 3-138
SWINGING 3-140
WORK EQUIPMENT CONTROLS AND OPERATIONS 3-141
WORKING MODE 3-143
PROHIBITED OPERATIONS 3-145
GENERAL OPERATION INFORMATION 3-148
TRAVELING ON SLOPES 3-151
ESCAPE FROM MUD 3-153
RECOMMENDED APPLICATIONS 3-154
BUCKET REPLACEMENT AND INVERSION 3-156
PARKING MACHINE 3-159
MACHINE INSPECTION AFTER DAILY WORK 3-161
LOCKING 3-161
TRANSPORTATION 3-162
TRANSPORTATION PROCEDURE 3-162
LOADING AND UNLOADING WITH TRAILER 3-163
LIFTING MACHINE 3-169
COLD WEATHER OPERATION 3-171
COLD WEATHER OPERATION INFORMATION 3-171
AFTER DAILY WORK COMPLETION 3-173
AFTER COLD WEATHER SEASON 3-173
LONG TERM STORAGE 3-174
BEFORE STORAGE 3-174
DURING STORAGE 3-174
AFTER STORAGE 3-175
STARTING MACHINE AFTER LONG-TERM STORAGE 3-175

TROUBLES AND ACTIONS 3-176
RUNNING OUT OF FUEL 3-176
PHENOMENA THAT ARE NOT FAILURES 3-177
TOWING THE MACHINE 3-178
SEVERE JOB CONDITION 3-178
DISCHARGED BATTERY 3-179
OTHER TROUBLE 3-184
MAINTENANCE 4- 1
MAINTENANCE INFORMATION 4- 2
OUTLINE OF SERVICE 4- 5
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC 4- 5
BATTERY TERMINAL 4- 10
ELECTRIC SYSTEM MAINTENANCE 4- 11
WEAR PARTS 4- 12
WEAR PARTS LIST 4- 12
RECOMMENDED FUEL, COOLANT, AND LUBRICANT 4- 13
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE 4- 14
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN
KOMATSU GENUINE OIL 4- 16
TIGHTENING TORQUE SPECIFICATIONS 4- 17
TIGHTENING TORQUE LIST 4- 17
DEFINED LIFE PARTS 4- 18
DEFINED LIFE PARTS LIST 4- 18
MAINTENANCE SCHEDULE 4- 19
MAINTENANCE SCHEDULE CHART 4- 19
MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER 4- 21
MAINTENANCE PROCEDURE 4- 22
WHEN REQUIRED 4- 22
CHECK BEFORE STARTING 4- 46
EVERY 100 HOURS MAINTENANCE 4- 47
EVERY 250 HOURS MAINTENANCE 4- 50
EVERY 500 HOURS MAINTENANCE 4- 56
EVERY 1000 HOURS MAINTENANCE 4- 68
EVERY 2000 HOURS MAINTENANCE 4- 78
EVERY 4000 HOURS MAINTENANCE 4- 82
EVERY 5000 HOURS MAINTENANCE 4- 83
SPECIFICATIONS 5- 1
SPECIFICATIONS 5- 2
ATTACHMENTS AND OPTIONS 6- 1
ATTACHMENTS AND OPTIONS – GENERAL INFORMATION 6- 2
SAFETY FIRST 6- 2
ATTACHMENT INSTALLATION 6- 3
BUCKET WITH HOOK 6- 4
HOOK CONDITION 6- 4
PROHIBITED OPERATIONS 6- 4
MACHINE READY FOR ATTACHMENT 6- 5
LOCATIONS 6- 5
HYDRAULIC CIRCUIT 6- 7
ATTACHMENT REMOVAL AND INSTALLATION 6- 8
ATTACHMENT OPERATIONS 6- 12

LONG TERM STORAGE 6- 15
SPECIFICATIONS 6- 15
ATTACHMENT GUIDE 6- 16
ATTACHMENT COMBINATIONS 6- 18
RECOMMENDED ATTACHMENT OPERATIONS 6- 19
HYDRAULIC BREAKER 6- 19
CRUSHER 6- 24
HANDLING MACHINES EQUIPPED WITH KOMTRAX 6- 27
BASIC PRECAUTIONS 6- 27
INDEX 7- 1