Hitachi ZW370 Technical Manual page 11

Fan Motor Line ................................................................................................................................................ 42-97
Hydraulic circuit (fan motor normal rotation) ............................................................................................. 42-99
Proportional relief valve (S/N 9001~9150) .............................................................................................. 42-101
Proportional relief valve (S/N 9151~) ...................................................................................................... 42-103
Fan motor ................................................................................................................................................ 42-105
Reversing Fan Motor Line (OPT) .................................................................................................................. 42-108
Reversing fan motor function .................................................................................................................. 42-108
Hydraulic circuit (Reverse rotation) ..........................................................................................................42-112
Secondary Steering ........................................................................................................................................42-113
Secondary steering operation ..................................................................................................................42-113
Secondary steering motor and pump .......................................................................................................42-115
43 Check & Adjustment Hydraulic Group .............................................................................................................. 43-1
Loading/Steering Circuit Relief Valve/Ride Control Circuit Reducing Valve (OPT) ........................................... 43-2
Loading circuit relief valve setting pressures .............................................................................................. 43-2
Ride control circuit reducing valve setting pressures (OPT) ....................................................................... 43-7
Steering circuit relief valve setting pressures .............................................................................................. 43-9
Hydraulic Cylinder ........................................................................................................................................... 43-14
Cylinder natural drift .................................................................................................................................. 43-14
Stop Valve ....................................................................................................................................................... 43-17
Stop valve adjustment procedure ............................................................................................................. 43-17
52 Function & Structure Brake Group ................................................................................................................... 52-1
Brake System Outline ....................................................................................................................................... 52-2
Service brake .............................................................................................................................................. 52-2
Parking brake .............................................................................................................................................. 52-2
Adjustment of axle internal pressure ........................................................................................................... 52-2
Brake Units Layout ............................................................................................................................................ 52-3
Unloader Valve .................................................................................................................................................. 52-4
Unloader valve operation ............................................................................................................................ 52-6
Valve Unit .......................................................................................................................................................... 52-7
Accumulator ...................................................................................................................................................... 52-9
Brake Valve ..................................................................................................................................................... 52-10
Brake valve performance chart ..................................................................................................................52-11
Brake valve outline .................................................................................................................................... 52-12