opens and oil flows to the energy reservoir. Now the piston shifts to the left, the warning
switch doesn’t ring.
The reservoir storages the maximum energy along with the oil pressure rises
constantly, the oil pressure is 13 MPa, this value is controlled by the safety valve.
The energy reservoir storages the pressure energy, there are safety valve and
pressure alarm switch inside it. Preventive maintenance should be done by authorized
serviceman. Failure to use will cause crack. Depressurization treatment should be done
when the truck parking or preventive maintenance.
The method to decrease the pressure: After the engine is flameout, press the brake
pedal for 5 to 8 times, then the pressure of reservoir in brake system can be decreased.
Fig. 4.3 Brake valve
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