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FOREWORD CONTENTS 1 - 9 TOWIN G THE MA CHINE WING HOLE NDITION TTERY LIGHTWEIGHT TO WING HOLE SEVER E JOB CO DISCHARGED BA OTHER TROUBLE MAINTENANCE MAINTENANCE INF ORMATION CE UEL, COOLANT, AND PERFORMING OIL CLINIC M MAINTENANCE OUTLINE OF SERVI HANDLING OIL, F UEL, COOLANT, A ND PERFORMING O IL CLINIC ELECTRIC SYSTE WEAR T EL, COOLANT, AND LUBRICANT BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER THAN NE OIL UE SPECIFICATIONS QUE LIST ARTS L PARTS LIST EDULE CHEDULE CHART TERVAL FOR HYDRAULIC BREAKER CEDURE S MAINTENANCE (ONLY AFTER THE FIRST 250 HOURS) S MAINTENANCE (ONLY AFTER THE FIRST 500 HOURS) RS MAINTENANCE (ONLY AFTER THE FIRST 1000 HOURS) STARTING S MAINTENANCE S MAINTENANCE S MAINTENANCE RS MAINTENANCE RS MAINTENANCE RS MAINTENANCE RS MAINTENANCE RS MAINTENANCE WEAR RECOMMENDED FU EL, COOLANT, AN D LUBRICANT RECOMMENDED KOMATSU GENUI TIGHTENING TORQ UE SPECIFICATIO TIGHTENING TOR SAFETY C RITICAL P SAFET Y CRITICA MAINTENANCE SCH MAINTENANCE S MAINTENANCE IN TERVAL FOR HYDRAULIC BREAKER MAINTENANCE PRO INITIAL 250 HOUR (ONLY AFTER THE FIRST 250 HOURS) INITIAL 500 HOUR (ONLY AFTER THE FIRST 500 HOURS) INITIAL 1000 HOU RS MAINTENANCE AFTER TH E FIRST 1000 HOURS) WHEN REQUIRED CHECK BEFORE EVERY 100 HOUR EVERY 250 HOUR EVERY 500 HOUR EVERY 1000 HOU RS MAINTENANCE EVERY 2000 HOU RS MAINTENANCE EVERY 4000 HOU RS MAINTENANCE EVERY 5000 HOU RS MAINTENANCE EVERY 8000 HOU RS MAINTENANCE SPECIFICATIONS SPECIFICATIONS PTIONS IONS FOR SAFETY HEN SELECTING UCTION MANUAL THOROUGHLY HEN REMOVING OR INSTALLING HEN USING K N RATIONS OR ATTACHMENT ATTACHMENTS AND O GENERAL PRECAUT IONS FOR SAFET PRECAUTIONS W HEN SELECTING READ T HE INSTR UCTION MANUAL THOROUGHLY PRECAUTIONS W PRECAUTIONS W HEN REMOVING O R INSTALLING BUCKET WITH HOO HOOK CONDITIO PROHIBITED OPE MACHINE UIT HYDRAULIC CIRC 3 - 147 3 - 148 3 - 148 3 - 149 3 - 153 4 - 1 4 - 2 4 - 4 4 - 4 4 - 7 4 - 8 4 - 8 4 - 9 FOR PRODUCTS OTHER THAN 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 4 - 5 - 5 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 6 - 11 12 12 13 14 15 15 17 18 18 18 18 19 40 41 42 45 58 64 71 75 77 1 2 1 2 2 2 2 2 3 3 3 4 4 8