Spool in neutral 3) BOOM SECTION OPERATION (1) B2 A2 b2 a2 P T LS Pst T Hydraulic circuit When the boom spool is in neutral position, oil from the pump will be blocked. Then, the pumps are at low pressure stand by. 75796WE51 6-27 a1 P a2 A1B1 A2 B2 Floating Down Bucket Up Dump Roll back Floating n Boom Up Dow b1 b2