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Hitachi ZW 550-G Technical Manual page 12

Wheel loader

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Auto Brake ...................................................................................................................................................... 52-36
Auto brake operation set value ................................................................................................................. 52-36
Auto brake circuit ...................................................................................................................................... 52-36
Solenoid valve (for auto brake circuit) ....................................................................................................... 52-37
Shuttle Valve ................................................................................................................................................... 52-38
Check & Adjustment Brake Group ........................................................................................................................ 53-1
Brake Circuit Oil Pressure ................................................................................................................................. 53-2
Unloader valve setting pressure .................................................................................................................. 53-2
Brake valve oil pressure .............................................................................................................................. 53-6
Service Brake .................................................................................................................................................... 53-8
Service brake performance check ............................................................................................................... 53-8
Service brake friction plate wear measurement .......................................................................................... 53-9
Parking Brake .................................................................................................................................................. 53-12
Parking brake performance check ............................................................................................................ 53-12
Parking brake clearance adjustment ......................................................................................................... 53-14
Function & Structure Electrical Group ................................................................................................................... 62-1
How to Use Electrical Wiring Diagram .............................................................................................................. 62-2
Electrical Cable Color Codes ............................................................................................................................ 62-8
Electrical Circuit Symbols .................................................................................................................................. 62-9
Sensor Mount .................................................................................................................................................. 62-10
Fuse ................................................................................................................................................................ 62-11
Fuse box ................................................................................................................................................... 62-12
Fusible link ................................................................................................................................................ 62-13
Engine Start Circuit ......................................................................................................................................... 62-14
Engine start circuit diagram ....................................................................................................................... 62-14
Neutral starter ........................................................................................................................................... 62-15
Starter switch ............................................................................................................................................. 62-16
Battery relay .............................................................................................................................................. 62-17
Alternator I terminal wire ........................................................................................................................... 62-17
Diode unit .................................................................................................................................................. 62-18
Neutral relay .............................................................................................................................................. 62-18
Magnet switch ........................................................................................................................................... 62-19
Voltage relay ............................................................................................................................................. 62-19

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