5. HYDRAULIC DIAGRAM 5.6 AUXILIARY SERVICES CONTROL VALVE 5.6.4 INLET MANIFOLD (CC version) DESCRIPTION The function of the inlet manifold is to send only the required amount of oil to the actuators and to send any excess oil sup- plied by the pump to the drain circuit. The inlet manifold also includes a relief valve that limits the operating pressure of the actuators. 3 1 4 HYDRAULIC DIAGRAM 4 3 2 R 2 1 D000 5070 1. Pressure compensating valve spool 2. Compensating valve spring 3. Relief valve 4. Relief valve spring 10-50 P