AB18EJ&18HJ Maintenance Manual iii © Oct 2020
C-3 Replace Engine Oil (AB18HJ
only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28
C-4 Replace Engine Oil Filter (-
AB18HJ only) . . . . . . . . . . . . . . . . . . . . . .5-28
C-5 Test Weighing System. . . . . . . . .5-29
Checklist D Procedures . . . . . . . . . . . . . .5-30
D-1 Replace Drive Reducer Gear
Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
D-2 Replace Slewing Reducer
Gear Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
D-3 Replace Hydraulic Oil . . . . . . . . .5-30
D-4 Replace Hydraulic Tank
Suction Filter. . . . . . . . . . . . . . . . . . . . . . .5-31
D-5 Replace Coolant and Coolant
Hoses (AB18HJ only) . . . . . . . . . . . . . .5-31
D-6 Replace Fuel Hoses (AB18HJ
only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-32
D-7 Inpsect Boom Wear Pads . . . . .5-32
6 Repair Procedures .............. 6-1
Boom and Platform Components . . . . . 6-1
Boom and Platform Systems . . . . . . . 6-1
Platform Controller. . . . . . . . . . . . . . . . . . 6-1
Platform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Platform Swing Motor . . . . . . . . . . . . . . . 6-2
Jib Boom Assembly. . . . . . . . . . . . . . . . . 6-2
Platform Level Cylinder . . . . . . . . . . . . . 6-3
Cable Track Assembly . . . . . . . . . . . . . . 6-4
Main Boom Assembly . . . . . . . . . . . . . . 6-4
Telescopic Boom Assembly . . . . . . . . 6-5
Secondary Boom Assembly . . . . . . . . 6-6
Chassis and Turntable Components . . 6-7
Tires and Rims. . . . . . . . . . . . . . . . . . . . . . 6-7
Reducer and Drive Motor . . . . . . . . . . . 6-8
Turntable Slewing Mechanism. . . . . . 6-9
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10
Hydraulic System . . . . . . . . . . . . . . . . . . . . 6-11
Layout of Hydraulic Elements. . . . . . 6-11
Boom Function Valves . . . . . . . . . . . . .6-12
Hydraulic Symbols . . . . . . . . . . . . . . . . .6-14
Hydraulic Schematic . . . . . . . . . . . . . . .6-15
Electrical System. . . . . . . . . . . . . . . . . . . . .6-17
Fault Code Desription . . . . . . . . . . . . .6-17
Use and Maintenance of Lead-
Acid Battery (requires
maintenance) . . . . . . . . . . . . . . . . . . . . . .6-33
Use and Care of Lead-acid Battery
(maintenance-free) . . . . . . . . . . . . . . . .6-37
Use and Care of Lithium Battery . . .6-37
Electrical Symbols . . . . . . . . . . . . . . . . .6-38
Electrical Schematic . . . . . . . . . . . . . . .6-41
Appendix 1: Prepare the Word
Record before Delivery........ A-1
Appendix 2: Repair & Inspection
Report ............................. A-3
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