| 摘要 |
The operating apparatus (500) suitable for operating first brakes of a front axle (501) and second brakes of a rear axle (502) of a vehicle comprises: first circuit means (503) and second circuit means (504) arranged to supply said first brakes and said second brakes with a pressurised fluid; first distributing means (505, 508) located between said first circuit means (503) and said second circuit means (504); supply means (23, 24) for said pressurised fluid; valve means (1) for sending said pressurised fluid to said first circuit means (503) and second circuit means (504), second distributing means (514, 515) being arranged between said first distributing means (505, 508) and said first brakes and second brakes arranged to deactivate said first distributing means (505, 508) in a malfunction condition of either said first circuit means (503) or second circuit means (504) and to connect said supply means (23, 24) with said first brakes or with said second brakes.
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