5.1.2 Checking Excavator Before Daily Starting ....................................................................................... 64
5.1.3 Periodic Maintenance ....................................................................................................................... 64
5.1.4 Preparation for Maintenance ............................................................................................................ 64
5.1.5 Using Fuel and Lubricant Correctly ................................................................................................. 65
5.1.6 Checking Discharged Grease And Used Filter Core ........................................................................ 65
5.1.7 Inspection After Maintenance ........................................................................................................... 65
5.1.8 Electrical System Maintenance ......................................................................................................... 65
5.1.9 Hydraulic System Maintenance ......................................................................................................... 66
5.2 OIL, COOLANT AND FILTER ............................................................................................................... 67
5.2.1 Lubricant and Hydraulic Oil ............................................................................................................. 67
5.2.2 Fuel ................................................................................................................................................... 67
5.2.3 Coolant in Cooling System ................................................................................................................ 68
5.2.4 Grease ............................................................................................................................................... 68
5.2.5 Oil and Fuel Storage ......................................................................................................................... 68
5.2.6 Filter .................................................................................................................................................. 69
5.2.7 Fuel and Coolant Specification ......................................................................................................... 70
5.3 TIGHTENING TORQUE SPECIFICATION .......................................................................................... 71
5.3.1 Tightening Torque Table for Bolts and Nuts ..................................................................................... 71
5.3.2 Tightening Torque Table for Hoses ................................................................................................... 72
5.4 ENGINE MAINTENANCE GUIDE ........................................................................................................ 72
5.4.1 Adding Lubrication Grease ............................................................................................................... 72
5.4.2 Engine Oil ......................................................................................................................................... 73
5.4.3 Gear Oil ............................................................................................................................................ 74
5.4.4 Hydraulic System ............................................................................................................................... 75
5.4.5 Fuel System ....................................................................................................................................... 76
5.4.6 Air Filter ............................................................................................................................................ 77
5.4.7 Cooling System .................................................................................................................................. 77
5.4.8 Air Conditioner Maintenance ............................................................................................................ 78
5.4.9 DPF Regeneration ............................................................................................................................. 79
5.4.10 Others .............................................................................................................................................. 82
5.4.11 Hose ................................................................................................................................................. 83
5.4.12 Wearing Parts Table ....................................................................................................................... 84
5.4.13 Maintenance under Special Situation .............................................................................................. 85
5.4.14 Protective Measures for Long Time Storage ................................................................................... 86
5.5 MACHINE MAINTENANCE SCHEDULE ............................................................................................ 87
5.5.1 Daily Maintenance (Every 8 Hours) ................................................................................................. 87
5.5.2 Maintenance in Running-in Period (First 50 Hours) ........................................................................ 90
5.5.3 If Maintenance is Needed .................................................................................................................. 94
5.5.4 Every 50 hours .................................................................................................................................. 98
5.5.5 Every 100 Hours ................................................................................................................................ 99
5.5.6 Every 250 hours ................................................................................................................................ 99
5.5.7 Every 500 Hours Service ................................................................................................................. 102
5.5.8 Every 1000 Hours Service ............................................................................................................... 103
5.5.9 Every 2000 Hours Service ............................................................................................................... 106
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