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6 Inspection and adjustment BRAKE COMPONENTS 1-27 1.15 INSPECTION FOUR-CIRCUIT SAFETY VALVE Version without circuit 3 reverse flow Inspecting circuits 1, 2 and 4 Lower the pressure in the system to 0 bar. 2. Connect pressure gauges to circuits 2 3. Simulate a fault in circuit 1 of the service 4. Pressurise the other circuits using the 5. The pressure in the intact circuits should 6. Switch off the engine. The pressure in the 7. Check the other circuits in the same way. Checking circuit 3 Lower the pressure in the system to 0 bar. 2. Connect pressure gauges to circuits 1 3. Pressurise the circuits using the 4. At a pressure of 7.5 bar in circuit 1, the 5. Switch off the engine and vent a circuit. The 21 23 22 24 1 a a b 5 8 6 9 10 11 7 R600044 4 ǹ 0006 |