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CONTENTS
DISCHARGED BATTERY ...................................................................................................................... 3-204
BATTERY REMOVAL AND INSTALLATION ................................................................................ 3-204
BATTERY CHARGES ................................................................................................................... 3-205
STARTING ENGINE WITH BOOSTER CABLES .......................................................................... 3-206
OTHER TROUBLE ................................................................................................................................. 3-209
ELECTRICAL SYSTEM ................................................................................................................. 3-209
CHASSIS ....................................................................................................................................... 3-210
ENGINE ......................................................................................................................................... 3-211
ELECTRONIC CONTROL SYSTEM ............................................................................................. 3-213
POINT OF CONTACT TO TELEPHONE WHEN ERROR OCCURS ............................................ 3-213
MAINTENANCE
MAINTENANCE INFORMATION ......................................................................................................................... 4-2
OUTLINE OF SERVICE........................................................................................................................................ 4-5
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC...................................................... 4-5
OIL ..................................................................................................................................................... 4-5
FUEL.................................................................................................................................................. 4-6
COOLANT AND WATER FOR DILUTION......................................................................................... 4-6
GREASE ............................................................................................................................................ 4-7
CARRYING OUT KOWA (KOMATSU OIL WEAR ANALYSIS) ......................................................... 4-8
STORING OIL AND FUEL ................................................................................................................. 4-9
FILTERS ............................................................................................................................................ 4-9
EXPLANATION OF LUBRICATION CHART DECAL ............................................................................... 4-10
ELECTRIC SYSTEM MAINTENANCE ..................................................................................................... 4-12
WEAR PARTS .................................................................................................................................................... 4-13
WEAR PARTS LIST.................................................................................................................................. 4-13
RECOMMENDED FUEL, COOLANT AND LUBRICANT .................................................................................. 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
SAFETY CRITICAL PARTS ............................................................................................................................... 4-18
SAFETY CRITICAL PARTS LIST ............................................................................................................. 4-18
MAINTENANCE SCHEDULE ............................................................................................................................. 4-19
MAINTENANCE SCHEDULE CHART ...................................................................................................... 4-19
MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER..................................................................... 4-21
MAINTENANCE PROCEDURE.......................................................................................................................... 4-22
INITIAL 250 HOURS MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) ................................... 4-22
INITIAL 500 HOURS MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS) ................................... 4-22
WHEN REQUIRED ................................................................................................................................... 4-23
CHECK, CLEAN AND REPLACE AIR CLEANER ELEMENT ......................................................... 4-23
1-22
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