VALVE AR 2991349 - Caterpillar

Illustration 1 g06248286
Stick Lowering Control Valve
(7) Line relief valve
(11) Valve
(14) Spool
Illustration 2 g06216357
Partial schematic (STICK IN)
(1) Stick cylinder
(2) Stick lowering control valve
(3) Main control valve
(4) Stick 1 cylinder extend solenoid
(5) Stick 2 cylinder extend solenoid
(6) Port to stick cylinder rod end
(8) Port to main control valve (pilot oil)
(17) Port to main control valve
(19) Port to drainSTICK OUT Operation
Illustration 3 g06248279
Stick out operation
(6) Port to stick cylinder rod end
(7) Line relief valve
(8) Port to main control valve (pilot oil)
(9) Passage
(10) Spring
(11) Valve
(12) Passage
(13) Passage
(14) Spool
(15) Passage
(16) Passage
(17) Port to main control valve
(18) Spring
(19) Port to drainWhen the operator moves the joystick to the STICK OUT position, the pump oil flows from main control valve (3) through a line to port (17) on stick lowering control valve (2).The pump oil flows into passage (16) and the pressure of the pump oil causes