
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