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102272 Pressure decrease 1. Vacuum servobrake - 2. Electronic control unit - 3. Scavenge pumps - 4. Scavenge pump control motor - 5. Low pressure accumulators - 6. Power supply solenoid valves - 7. Quick pressure decrease single-acting valves - 8. Discharge solenoid valves - DX/A. Front axle right wheel sensor - SX/A. Front axle left wheel sensor - DX/P. Rear axle right wheel sensor - SX/P. Rear axle left wheel sensor If the sensors find that the wheel(s) tends to get locked, they will inform the control unit: the latter will reduce the braking power At the same time, the excess oil in low pressure accumulators “5” can be recovered by powering motor “4” which drives pumps Figura 46/5 51/9 HYDRO-PNEUMATIC SYSTEM - BRAKES D AILY Revi - February 2005 |