5. HYDRAULIC DIAGRAM 5.6 AUXILIARY SERVICES CONTROL VALVE 5.6 AUXILIARY SERVICES CONTROL VALVE FUNCTION The function of the auxiliary services control valve is to control the flow of oil to the auxiliary services and the rear lift. This control valve is of the serial type, i.e. it can be operated one spool at a time. 1 5 3 2 3 4 R P 7 B A B A A 6 REAR GEARBOX D0011800 DESCRIPTION The pressurised oil from the pump (1) enters the inlet section (2), from where it is distributed to the spools (3), (4) through the internal passages. The inlet section (2) has a pressure relief valve (7) that serves to prevent an excessive increase in the operating pres- sure of the loads.
On the lift element (4) there is a flow control valve (6) that serves to send excess oil supplied by the pump to the lu- brication circuit. On the lift control element (5) there is also an antishock valve (on the "up" control side), which serves to prevent any excessive pressure surges caused by jolting of the implement. 10-44