FAN AS-REVERSE 1270359 - Caterpillar

Right Turn (Counterrotate Turn)
Illustration 8 g01367222
(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 (58) Front pump's Mb test port (59) Front pump's Ma test port (60) Front pump's X1 test port (61) Front pump's X2 test port (62) Rear pump's Mb test port (63) Rear pump's Ma test port (64) Rear pump's X1 test port (65) Rear pump's X2 test port (66) Left charge loop and SOS test port (67) Right charge loop test port (68) Winch charge loop test port (74) Rear pump's G test port (75) Front pump's case pressure test portECM (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 between 33% and 70% is sent through pin 58 of the J1 connector to wire C959-BR. The signal flows through wire C959-BR to the motor displacement control (8) .
A signal with a solenoid duty cycle between 33% and 70% is sent through pin 59 of the J1 connector to wire C958-BU. The signal flows through wire C958-BU 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 between 23.5% and 86% is sent through pin 52 of the J1 connector to wire K946-OR. The signal flows through wire K946-OR to the reverse solenoid of the proportional solenoid valve (21) .
A signal with a solenoid duty cycle of less than 26% is sent through pin 51 of the J1 connector to wire K947-YL. The signal flows through wire K947-YL 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 23.5% is sent through pin