HYDRAULIC SYSTEM Ch 5 page 2 Hydraulic system Index Components, capacities and oil types...............................................
3 Hydraulic system main function.......................................................................................................4 Hydraulic parts view HA30 .............................................................................................................5 Hydraulic System Description.........................................................................................................5 Hydraulic System Components.......................................................................................................6 Main Valve Circuit (Up to 7X1750 / 8X1718)...................................................................................8 Main Valve Circuit (From 7X1751 / 8X1719)...................................................................................9 Main Valve - List Of Components..................................................................................................10 Main Valve - Spare Parts & Torques..............................................................................................12 Hydraulic circuit HA30-45 (Up to 7X1836 / 8X1765).....................................................................19 Hydraulic circuit HA30-45 (From 7X1837 / 8X1766).....................................................................21 Startup test procedure ......................................................................
23 Main Pump..........................................................................................
24 Pump description..........................................................................................................................24 Test block......................................................................................................................................25 Main pump pressure adjusting......................................................................................................26 Main pump pressure adjusting......................................................................................................27 Main pump circuit..........................................................................................................................28 Main pump parts list......................................................................................................................28 Main pump exploded view.............................................................................................................29 Steering system.................................................................................
31 Orbitrol..........................................................................................................................................32 Steering valve...............................................................................................................................35 Steering circuit HA30 / DA40........................................................................................................36 Steering Cylinder..........................................................................................................................37 Steering cylinder, sectional drawing..............................................................................................39 Steering cylinder Repair Instructions............................................................................................40 Emergency steering pump............................................................................................................42 Tilting system.....................................................................................
45 Tilt Lever........................................................................................................................................45 View of the tilting system...............................................................................................................46 Tilt cylinders:.................................................................................................................................47 Tilt cylinder, sectional drawing.......................................................................................................49 Tilt cylinder Repair Instructions.....................................................................................................50 Fan system.........................................................................................
52 Fan Drive Motor.............................................................................................................................53 Disassemble the fan and fan motor...............................................................................................54 Brakes.................................................................................................
55 Brake circuit view (Up to 7X1836 / 8X1765)..................................................................................55 Brake circuit view (From 7X1837 / 8X1766)..................................................................................56 General discription........................................................................................................................57 Parking brake, description.............................................................................................................57 Parking brake circuit view..............................................................................................................58 Service brake, description.............................................................................................................59 Accumulators.....................................................................................
60 Description of the Accumulators...................................................................................................60 Filling table of Correction Factors..................................................................................................63 Main valve pressure adjustment:...................................................................................................64 Brake cooling system....................................................................................................................65 SHOP MANUAL