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مکانیک::
شیر سروو
The working hydraulics is of the load-sensing (LS) type and its main parts are: hydraulic oil tank, hydraulic pumps with variable flow, central valve, control valve, servo valve, solenoid valves, hydraulic cylinders and hydraulic oil cooler.
Servo valve
The servo valve has a closed centre.
The servo valve is equipped with detent solenoids (electromagnets) for the floating position, bucket positioner and boom kick-out.
The spring in the servo valve lowering function (77) is faulty.
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