5.1.2 Checking Excavator Before Daily Starting ....................................................................................... 66
5.1.3 Periodic Maintenance ........................................................................................................................ 66
5.1.4 Preparation for Maintenance ............................................................................................................. 66
5.1.5 Using Fuel and Lubricant Correctly .................................................................................................. 67
5.1.6 Checking Discharged Grease And Used Filter Core ......................................................................... 67
5.1.7 Inspection After Maintenance ........................................................................................................... 67
5.1.8 Electrical System Maintenance ......................................................................................................... 67
5.1.9 Hydraulic System Maintenance ......................................................................................................... 68
5.2 OIL, COOLANT AND FILTER ............................................................................................................... 69
5.2.1 Lubricant and Hydraulic Oil .............................................................................................................. 69
5.2.2 Fuel .................................................................................................................................................... 69
5.2.3 Coolant in Cooling System ................................................................................................................ 70
5.2.4 Grease ................................................................................................................................................ 70
5.2.5 Oil and Fuel Storage .......................................................................................................................... 70
5.2.6 Filter .................................................................................................................................................. 71
5.2.7 Fuel and Coolant Specification ......................................................................................................... 72
5.3 TIGHTENING TORQUE SPECIFICATION .......................................................................................... 73
5.3.1 Tightening Torque Table for Bolts and Nuts..................................................................................... 73
5.3.2 Tightening Torque Table for Hoses .................................................................................................. 74
5.4 ENGINE MAINTENANCE GUIDE ........................................................................................................ 74
5.4.1 Adding Lubrication Grease ............................................................................................................... 74
5.4.2 Engine Oil ......................................................................................................................................... 75
5.4.3 Gear Oil ............................................................................................................................................. 76
5.4.4 Hydraulic System .............................................................................................................................. 77
5.4.5 Fuel System ....................................................................................................................................... 78
5.4.6 Air Filter ............................................................................................................................................ 79
5.4.7 Cooling System ................................................................................................................................. 79
5.4.8 Air Conditioner Maintenance ............................................................................................................ 80
5.4.9 DPF Regeneration ............................................................................................................................. 81
5.4.10 Others .............................................................................................................................................. 84
5.4.11 Hose ................................................................................................................................................. 85
5.4.12 Wearing Parts Table ........................................................................................................................ 86
5.4.13 Maintenance under Special Situation .............................................................................................. 87
5.4.14 Protective Measures for Long Time Storage ................................................................................... 88
5.5 MACHINE MAINTENANCE SCHEDULE ............................................................................................ 89
5.5.1 Daily Maintenance (Every 8 Hours) .................................................................................................. 89
5.5.2 Maintenance in Running-in Period (First 50 Hours) ......................................................................... 92
5.5.3 If Maintenance is Needed .................................................................................................................. 96
5.5.4 Every 50 hours ................................................................................................................................ 100
5.5.5 Every 100 Hours .............................................................................................................................. 101
5.5.6 Every 250 hours .............................................................................................................................. 101
5.5.7 Every 500 Hours Service ................................................................................................................. 104
5.5.8 Every 1000 Hours Service ............................................................................................................... 105
5.5.9 Every 2000 Hours Service ............................................................................................................... 108
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