Komatsu PC308USLC-3E0 Hydraulic Excavator Index:

CONTENTS
FOREWORD 1- 1
BEFORE READING THIS MANUAL 1- 2
SAFETY INFORMATION 1- 3
INTRODUCTION 1- 4
USE OF MACHINE 1- 4
DIRECTIONS OF MACHINE 1- 4
VISIBILITY FROM OPERATOR’S SEAT 1- 4
PRODUCT INFORMATION 1- 5
PRODUCT IDENTIFICATION NUMBER (PIN)/MACHINE SERIAL NO. PLATE 1- 5
EPA REGULATIONS, ENGINE NUMBER PLATE 1- 5
SERVICE METER LOCATION 1- 6
YOUR MACHINE SERIAL NUMBERS AND DISTRIBUTOR 1- 6
SAFETY 2- 1
SAFETY 2- 2
SAFETY LABELS 2- 5
LOCATION OF SAFETY LABELS 2- 5
SAFETY LABELS 2- 6
GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE 2- 12
PRECAUTIONS BEFORE STARTING OPERATION 2- 12
PREPARATIONS FOR SAFE OPERATION 2- 12
FIRE PREVENTION 2- 14
PRECAUTIONS WHEN GETTING ON OR OFF MACHINE 2- 15
DO NOT GET CAUGHT IN WORK EQUIPMENT 2- 17
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES 2- 17
PROTECTION AGAINST FALLING, FLYING, INTRUDING OBJECTS 2- 18
UNAUTHORIZED MODIFICATION 2- 19
PRECAUTIONS RELATED TO ATTACHMENTS AND OPTIONS 2- 19
PRECAUTIONS RELATED TO CAB GLASS 2- 19
PRECAUTIONS WHEN RUNNING ENGINE INSIDE BUILDING 2- 19
PRECAUTIONS FOR OPERATION 2- 20
PRECAUTIONS FOR JOBSITE 2- 20
STARTING ENGINE 2- 22
OPERATION 2- 24
TRANSPORTATION 2- 31
TOWING 2- 32
LIFTING OBJECTS WITH BUCKET 2- 33
PRECAUTIONS FOR MAINTENANCE 2- 34
PRECAUTIONS BEFORE STARTING INSPECTION AND MAINTENANCE 2- 34
PRECAUTIONS FOR INSPECTION AND MAINTENANCE 2- 38
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
CONTROL LEVERS AND PEDALS 3- 39
SUN ROOF 3- 42
WINDSHIELD 3- 43
1 – 7

SLIDING DOOR 3- 49
REAR UNDERVIEW MIRROR 3- 49
CAP WITH LOCK 3- 50
EMERGENCY ESCAPE HAMMER 3- 51
HOT AND COOL BOX 3- 52
MAGAZINE BOX 3- 52
ASHTRAY 3- 52
AIR CONDITIONER CONTROLS 3- 53
RADIO 3- 60
AUXILIARY ELECTRIC POWER 3- 65
FUSE 3- 66
FUSIBLE LINK 3- 67
CONTROLLER 3- 67
TOOL BOX 3- 67
GREASE PUMP HOLDER 3- 68
MACHINE OPERATIONS AND CONTROLS 3- 69
BEFORE STARTING ENGINE 3- 69
STARTING ENGINE 3- 87
AFTER STARTING ENGINE 3- 90
STOPPING THE ENGINE 3-101
MACHINE OPERATION 3-102
STEERING THE MACHINE 3-106
SWINGING 3-108
WORK EQUIPMENT CONTROLS AND OPERATIONS 3-109
WORKING MODE 3-111
PROHIBITED OPERATIONS 3-112
GENERAL OPERATION INFORMATION 3-115
TRAVELING ON SLOPES 3-116
ESCAPE FROM MUD 3-118
RECOMMENDED APPLICATIONS 3-119
BUCKET REPLACEMENT AND INVERSION 3-121
PARKING MACHINE 3-125
MACHINE INSPECTION AFTER DAILY WORK 3-126
LOCKING 3-127
TRANSPORTATION 3-128
TRANSPORTATION PROCEDURE 3-128
LOADING AND UNLOADING WITH TRAILER 3-129
LIFTING MACHINE 3-138
COLD WEATHER OPERATION 3-140
COLD WEATHER OPERATION INFORMATION 3-140
AFTER DAILY WORK COMPLETION 3-143
AFTER COLD WEATHER SEASON 3-143
LONG TERM STORAGE 3-144
BEFORE STORAGE 3-144
DURING STORAGE 3-144
AFTER STORAGE 3-144
STARTING MACHINE AFTER LONG-TERM STORAGE 3-145
TROUBLES AND ACTIONS 3-146
RUNNING OUT OF FUEL 3-146
PHENOMENA THAT ARE NOT FAILURES 3-146
1 – 8
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FOREWORD CONTENTS
TOWING THE MACHINE 3-147
LIGHTWEIGHT TOWING HOLE 3-148
SEVERE JOB CONDITION 3-148
DISCHARGED BATTERY 3-149
OTHER TROUBLE 3-153
MAINTENANCE 4- 1
MAINTENANCE INFORMATION 4- 2
OUTLINE OF SERVICE 4- 4
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC 4- 4
ELECTRIC SYSTEM MAINTENANCE 4- 7
WEAR PARTS 4- 8
WEAR PARTS LIST 4- 8
RECOMMENDED FUEL, COOLANT, AND LUBRICANT 4- 9
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN
KOMATSU GENUINE OIL 4- 11
TIGHTENING TORQUE SPECIFICATIONS 4- 12
TIGHTENING TORQUE LIST 4- 12
SAFETY CRITICAL PARTS 4- 13
SAFETY CRITICAL PARTS LIST 4- 14
MAINTENANCE SCHEDULE 4- 15
MAINTENANCE SCHEDULE CHART 4- 15
MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER 4- 17
MAINTENANCE PROCEDURE 4- 18
INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) 4- 18
INITIAL 500 HOURS MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS) 4- 18
INITIAL 1000 HOURS MAINTENANCE (ONLY AFTER THE FIRST 1000 HOURS) 4- 18
WHEN REQUIRED 4- 19
CHECK BEFORE STARTING 4- 40
EVERY 100 HOURS MAINTENANCE 4- 41
EVERY 250 HOURS MAINTENANCE 4- 42
EVERY 500 HOURS MAINTENANCE 4- 45
EVERY 1000 HOURS MAINTENANCE 4- 58
EVERY 2000 HOURS MAINTENANCE 4- 64
EVERY 4000 HOURS MAINTENANCE 4- 71
EVERY 5000 HOURS MAINTENANCE 4- 75
EVERY 8000 HOURS MAINTENANCE 4- 77
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
BUCKET WITH HOOK 6- 3
HOOK CONDITION 6- 3
PROHIBITED OPERATIONS 6- 3
MACHINE READY FOR ATTACHMENT 6- 4
LOCATIONS 6- 4
HYDRAULIC CIRCUIT 6- 8

ATTACHMENT REMOVAL AND INSTALLATION 6- 13
ATTACHMENT OPERATIONS 6- 16
LONG TERM STORAGE 6- 17
SPECIFICATIONS 6- 17
ATTACHMENT GUIDE 6- 18
TRACK SHOES SELECTION 6- 18
RECOMMENDED ATTACHMENT OPERATIONS 6- 19
HYDRAULIC BREAKER 6- 19
HANDLING MACHINES EQUIPPED WITH KOMTRAX 6- 23
BASIC PRECAUTIONS 6- 23
INDEX