Illustration 1 g02983036 (L) Swing cylinder on the left side (R) Swing cylinder on the right side (1) Spring (2) Control Spool (3) Load sense signal passage (4) Pressure compensator (5) Makeup and relief valve (6) Passage to workport (A) for the rod end of the cylinder (7) Passage to workport (B) for the head end of the cylinder (8) Bridge passage (9) Spring (10) Pilot supply oil (11) Return passage to tank (12) Pump supply port (13) Feeder passage (14) Pilot supply oil HOLD Position In the HOLD position, the spring (1) and spring (9) hold spool (2) in the centered position. No pilot oil enters the control valve. Any pilot oil in the pilot lines drains through the pilot valve to the tank. Spool (2) blocks the flow of pump supply oil in passage (12).Passage (12) is common to all control valves in the bank valve. The passage has no outlet. The spool blocks the flow of pump supply oil until the operator moves the joystick.Swing Left Postion When the operator moves the joystick to the Swing Left position, pilot pressure acts on the left end of control spool (2). When the oil overcomes the force of spring (9), spool (2) moves right.Pump supply oil
