CONTENTS FOREWORD DURING STORAGE ................................................................................................................................. 3-98 AFTER STORAGE.................................................................................................................................... 3-99 STARTING MACHINE AFTER LONG-TERM STORAGE ........................................................................ 3-99 TROUBLES AND ACTIONS ............................................................................................................................
3-100 RUNNING OUT OF FUEL ...................................................................................................................... 3-100 PHENOMENA THAT ARE NOT FAILURES........................................................................................... 3-100 TOWING THE MACHINE ....................................................................................................................... 3-101 LIGHTWEIGHT TOWING HOOK............................................................................................................ 3-101 SEVERE JOB CONDITION ....................................................................................................................
3-101 DISCHARGED BATTERY ...................................................................................................................... 3-102 OTHER TROUBLE ................................................................................................................................. 3-106 MAINTENANCE MAINTENANCE INFORMATION ......................................................................................................................... 4-2 OUTLINE OF SERVICE ........................................................................................................................................
4-5 HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...................................................... 4-5 ELECTRIC SYSTEM MAINTENANCE ....................................................................................................... 4-9 WEAR PARTS .................................................................................................................................................... 4-10 WEAR PARTS LIST.................................................................................................................................. 4-10 RECOMMENDED FUEL, COOLANT, AND LUBRICANT .................................................................................
4-11 USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE............. 4-12 RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN KOMATSU GENUINE OIL .......................................................................... 4-13 TIGHTENING TORQUE SPECIFICATIONS ...................................................................................................... 4-14 TIGHTENING TORQUE LIST................................................................................................................... 4-14 PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS ..........................................................................
4-15 SAFETY CRITICAL PARTS...................................................................................................................... 4-15 MAINTENANCE SCHEDULE ............................................................................................................................. 4-16 MAINTENANCE SCHEDULE CHART...................................................................................................... 4-16 MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER..................................................................... 4-18 MAINTENANCE PROCEDURE ..........................................................................................................................
4-19 INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) ................................... 4-19 WHEN REQUIRED ................................................................................................................................... 4-20 CHECK BEFORE STARTING .................................................................................................................. 4-51 EVERY 50 HOURS MAINTENANCE........................................................................................................ 4-52 EVERY 100 HOURS MAINTENANCE......................................................................................................
4-53 EVERY 250 HOURS MAINTENANCE...................................................................................................... 4-56 EVERY 500 HOURS MAINTENANCE...................................................................................................... 4-61 EVERY 1000 HOURS MAINTENANCE.................................................................................................... 4-67 EVERY 2000 HOURS MAINTENANCE.................................................................................................... 4-69 1-12