Specifications

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Fig. 4.2 Position of brake pedal
4.2.2 Brake valve (Fig. 4.3)
(1) Non-brake state
Since the brake valve A port is open, the nozzle of the pump and powered
steering is interlinked, the operation of steering is normal in the state of non-brake.
When the brake pedal isn’t been pressed, the oil pressure in the chamber D won’t go
up in that the port B is close.
(2) Brake state
A. When pressing the brake pedal, the piston 10 shifts to the left, valve sleeve 7
and recoil piston 5 are pressed to the left by the spring group 8, in the meantime, the