Hitachi ZW370 Technical Manual page 10

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Orbitrol ........................................................................................................................................................... 42-63
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Orbitrol structure ..................................................................................................................................... 42-63
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Orbitrol specifications .............................................................................................................................. 42-64
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Orbitrol operation .................................................................................................................................... 42-65
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Orbitrol feed-back mechanism operation ................................................................................................ 42-67
Steering speed and flow rate control ......................................................................................................... 42-68
Hydraulic pump oil amount and steering force .......................................................................................... 42-68
Orbit rotor operation principle .................................................................................................................... 42-69
Steering Valve (KVS32-A4.0/20) ..................................................................................................................... 42-70
Steering valve operation ........................................................................................................................... 42-72
Steering spool variable throttle .................................................................................................................. 42-74
Steering valve flow control spool ............................................................................................................... 42-75
Steering valve main relief valve ................................................................................................................ 42-76
Steering valve overload relief valve .......................................................................................................... 42-78
Steering pilot circuit and its operation ....................................................................................................... 42-80
Stop Valve ....................................................................................................................................................... 42-82
Stop valve function .................................................................................................................................... 42-83
Stop valve operation ................................................................................................................................. 42-83
Reducing Valve (for Orbitrol
Steering Line Filter .......................................................................................................................................... 42-85
K-Lever (OPT) ................................................................................................................................................. 42-86
Hydraulic circuit ......................................................................................................................................... 42-86
Hydraulic line diagram ............................................................................................................................... 42-87
Hydraulic line ............................................................................................................................................. 42-88
Solenoid valve mount ................................................................................................................................ 42-89
Solenoid valve assembly (1/2) .................................................................................................................. 42-90
Solenoid valve assembly (2/2) .................................................................................................................. 42-91
Efficient Loading System ................................................................................................................................. 42-92
Efficient loading system outline ................................................................................................................. 42-92
Mounting of the ELS valve ........................................................................................................................ 42-93
Mounting of the variable kickout sensor .................................................................................................... 42-94
Efficient loading system operation ............................................................................................................ 42-95
Fan Motor System ........................................................................................................................................... 42-96
Mounting of fan motor ............................................................................................................................... 42-96
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) ......................................................................................................................... 42-84
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