CYLINDER GP-BUCKET 3044908 - Caterpillar

Right Turn (Counterrotate Turn)
Illustration 8 g03065179
(1) Rotating group (2) Check valve (3) Check valve (4) Speed sensor (5) Passage (6) Shift actuator piston (7) Passage (8) Motor displacement control (9) Line (10) Left piston motor (11) Line (12) Front piston pump (13) Fan Motor (14) Motor Case Drain (15) Return Manifold (16) Implement Valve Stack (17) Rear piston pump (18) Actuator piston (19) Actuator piston (20) Proportional solenoid valve (21) Proportional solenoid valve (22) Left side filter and bypass switch (23) Right side filter and bypass switch (24) Return manifold (25) Brake (26) Parking brake solenoid (27) Cooler bypass (28) Oil cooler (29) Parking brake actuators (30) Implement and fan pumps (33) Right side motor (34) Return Manifold (35) Implement Pump (36) Implement Oil Drain (37) Tank (38) Override solenoid (40) Fan and winch control valve (42) Motor displacement control (43) Passage (44) Line (45) Passage (46) Passage (47) Line (48) Passage (49) Passage (50) Passage (51) Line (52) Line (53) Line (54) Line (55) Speed sensor (56) Electronic Control Module (57) Engine (66) Left charge loop and SOS test port (67) Right charge loop test port (68) Winch charge loop test port (69) Decel Pedal (70) Brake limit switch (71) Hystat joystick base (72) Hystat joystick handle (73) Left reverse pressure sensor (74) Right reverse pressure sensor (75) Right forward pressure sensor (76) Left forward pressure sensorThe hystat joystick base (71) and hystat joystick handle (72) send a signal from an operator request to be in the FORWARD and COUNTERROTATE RIGHT position.ECM (56) interprets the two signals and ECM (56) determines that the joystick is in the FORWARD position and in the COUNTERROTATE RIGHT position. As a result, ECM (56) sends signals to the piston pumps and to the piston motors.ECM (56) sends the following signals to piston motor (10) and to piston motor (33) .
A signal with a solenoid duty cycle above initialization current is sent to the motor displacement control (8) .
A signal with a solenoid duty cycle above initialization current is sent to motor displacement control (42) .ECM (56) sends the following signals to proportional solenoid valve (21) of piston pump (17) .
A signal with a solenoid duty cycle above initialization current is sent to the reverse solenoid of the proportional solenoid valve (21) .
A signal with a solenoid duty cycle of less than initialization current is sent to the forward solenoid of proportional solenoid valve (21) .ECM (56) sends the following signals to proportional solenoid valve (20) of piston pump (12) .
A signal with a solenoid duty cycle of less than initialization current is sent to the reverse solenoid of proportional solenoid valve (20) .
A signal with a solenoid duty cycle above initialization current is sent to the forward solenoid of proportional solenoid valve (20) .The signals to the solenoids of the piston motors vary with the signals that are received from the travel speed switch of the joystick. The signals determine the angle of the swashplates of the piston pumps and of the