PERIODIC REPLACEMENT OF PARTS MAINTENANCE To ensure safe and long trouble free operation, be sure to conduct periodic inspections of the machine. In addition, the parts as listed below are directly related to safety operation so that they are recommended to be periodically replaced. These part material properties will change due to aging, or repeated operation may cause deterioration, wear, and/or fatigue of these parts, possibly resulting in serious safety/fire hazards. It is very difficult to gauge the remaining service lifetime of these parts simply by visual inspection alone. For this reason, replace these parts at the intervals shown in the table below. If any of these parts are found to be defective by inspection, immediately replace it regardless of the recommended intervals. Consult your authorized dealer for correct replacement. Hydraulic System Periodic Replacement Parts Fuel hose (Fuel tank to filter) Replacement Interval Fuel hose (Fuel tank to injection pump) Every 2 years Engine Heater hose (Heater to engine) Engine rubber vibration insulator Floor mount rubber Pump coupling Pump suction hose Pump delivery hose Every 5 years or 4000 hours, whichever comes first Base Machine Swing hose Auxiliary hose Oil cooler hose (C/V to oil cooler) Boom cylinder line hose Every 2 years Front Attachment Arm cylinder line hose Bucket cylinder line hose Pilot hose Seat Belt Every 3 years NOTE: When replacing a hose, be sure to replace seals, such as O-rings and gaskets, along with the hose. 7-8
MAINTENANCE GUIDE MAINTENANCE A. GREASING (See Page 7-15) Parts Quantity 8 50 Interval (hours) 100 250 500 1000 2000 1. Front Joint Pins (Incl. around the swing post) 9 � �� Or every year 2. Bucket and Link Pins 5 � 3. Blade Pins 4 Or every year 4. Swing Bearing 1 5. Swing Internal Gear 1 6. Control Lever Universal Joint 2 Or every year 7. Tilt Mechanism 1 NOTE: � Grease all submerged pins after operating in water. Grease all pins daily during break-in operation for 50 hours. �� Grease all pins every 100 hours only during first time operation up to 500 hours. B. ENGINE (See Page 7-22) Parts Quantity Oil Level Check – 1. Engine oil Change 11.9 L (3.1 US gal) 2. Replacement of engine oil filter 1 7-9 Intervals (Hours) 8 50 100 250 500 1000 2000 NOTE: �Shorten the maintenance interval when the machine is operated in high temperature condition. C. TRANSMISSION (See Page 7-24) 1. Travel Reduction Gear Change Parts Quantity Oil Level Check – D. HYDRAULIC SYSTEM (See Page 7-26) 0.9 L (0.95 US qt)×2 Interval (hours) 8 50 100 250 500 1000 2000 Parts Quantity 8 50 Interval (hours) 100 250 500 1000 2000 1. Check Hydraulic Oil Level 1 2. Drain Hydraulic Oil Tank Sump 1 3. Change Hydraulic Oil 100 L (26.4 US gal) � � 4. Clean Suction Filter 1 When changing hydraulic oil 5. Replace Full Flow Filter Element 1 �� 6. Replace Pilot Filter Element 1 for leaks or looseness 7. Check Hoses and Lines for cracks, bend, etc. – – NOTE: � Hydraulic oil changing intervals differ according to kind of hydraulic oils used. See recommended oil chart. �� For the first time only. �
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