5) 5) FAN MOTOR OPERATED (NEW) FAN MOTOR OPERATED (NEW) FRONT 24 P1 BL2 BR1 BL1 25 45 P2 T1 BR2 T2 REAR S3 G1 23 PS B3 46 G2 PS T/M 23 PARKING T2 Return line P 6 Return line A B D B A Main pump L S1 955SA4BS06 When the brake accumulators are fully charged, the priority valve switches position and the oil is directed to hydraulic fan motor through directional valve (30). The flow of the oil causes fan motor (29) to rotate the fan blade. The rotation of the fan forces cool air to flow through the cooler. 4-8-1 21 S1 20 Priority valve P 23 PS PS 38 PP T1 6 8