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FOREWORD
CONTENTS
RUNNING OUT OF FUEL 3-194
PHENOMENA THAT ARE NOT FAILURES 3-194
TOWING THE MACHINE 3-195
LIGHTWEIGHT TOWING HOLE 3-196
SEVERE JOB CONDITION 3-196
DISCHARGED BATTERY 3-197
OTHER TROUBLE 3-201
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- 9
RECOMMENDED FUEL, COOLANT, AND LUBRICANT 4- 10
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER
THAN KOMATSU GENUINE OIL 4- 12
TIGHTENING TORQUE SPECIFICATIONS 4- 13
TIGHTENING TORQUE LIST 4- 13
SAFETY CRITICAL PARTS 4- 14
SAFETY CRITICAL PARTS LIST 4- 15
MAINTENANCE SCHEDULE 4- 17
MAINTENANCE SCHEDULE CHART 4- 17
MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER 4- 19
MAINTENANCE PROCEDURE 4- 20
INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) 4- 20
INITIAL 500 HOURS MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS) 4- 20
WHEN REQUIRED 4- 21
CHECK BEFORE STARTING 4- 48
EVERY 100 HOURS MAINTENANCE 4- 49
EVERY 250 HOURS MAINTENANCE 4- 50
EVERY 500 HOURS MAINTENANCE 4- 53
EVERY 1000 HOURS MAINTENANCE 4- 67
EVERY 2000 HOURS MAINTENANCE 4- 77
EVERY 4000 HOURS MAINTENANCE 4- 84
EVERY 5000 HOURS MAINTENANCE 4- 88
EVERY 8000 HOURS MAINTENANCE 4- 89
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
1 - 9
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