Boom raise position Boom raise position (2) B2 A2 P T b2 a2 B2 A2 Hydraulic circuit 76096WE52 When the pilot pressure is led to the port b2, the boom spool moved to raise position. Oil from the pump flows to the cylinder port B2 and oil from the cylinder flows into the tank passage through the cylinder port A2. 6-27 a2 T P a1 A1 B1 LS A2 B2 pst Dump Floating own Roll back Bucket Boom D Up b1 A2 B2 b2