1) 1) NEUTRAL NEUTRAL 13 13 17 LH RH 14 R L G T MCV P Return line 16 39 Return line S1 D P T X1 X2 X3 5 PS X1 1 B1 Return line L L1 S1 Fan & brake pump 955A5SE02 · · The steering wheel is not being operated so control spool (G) does not move. The oil from the main pump enters port P of the priority valve and the inlet pressure oil moves the spool (D) to the right. Almost all of pump flow goes to the loader system (main control valve) through the EF port and partly flows into the hydraulic tank (26). · 5-3 LS 15 LS 27 26