In This Chapter
Maintenance Introduction ......................................................... 38
Electric Crane Power Safety ..................................................... 38
Maintenance Schedule ............................................................. 39
Electric Crane Lubrication ........................................................ 39
Grease Zerks ........................................................................... 40
Crane Hydraulic Oil Specifications ........................................... 40
Electric Crane Power Unit Components ................................... 41
Power Unit Troubleshooting ..................................................... 43
Purging Air from Hydraulic System ........................................... 44
Hydraulic Pressure Relief ......................................................... 44
Hydraulic Cylinder Holding Capability ....................................... 44
Pin Removal & Inspection ........................................................ 45
Electric Crane Wear Pads ........................................................ 46
Wire Rope Inspection ............................................................... 47
Wire Rope Lubrication .............................................................. 48
Wire Rope Maintenance ........................................................... 48
Wire Rope Inspection & Replacement ...................................... 48
Wire Rope Lay ......................................................................... 50
Additional Inspections .............................................................. 50
Excessive Load Limitation System ........................................... 52
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