SETSCREW 4646186 - Caterpillar

FREESPOOL Position
Illustration 4 g01425047
Hydraulic schematic of the winch for the Freespool position (1) Connector (2) Hydraulic oil tank (3) Passage (4) Passage (5) Passage (6) Cooler bypass block (7) Winch system pressure taps (8) Drive away solenoid (9) Passage (10) Freespool solenoid (11) Brake solenoid valve (12) Passage (13) Line (14) Passage (15) Line (16) Suction manifold (17) Line (18) Line (19) Winch logic valve (20) Winch hystat pump (21) Plug (22) Pressure override valve (23) Pressure override relief sensor (24) Connector (25) Check valve (26) Orifice (27) Charge pump (28) Crossover relief valve (29) Charge pump (30) Front drive hystat charge pump (31) Charge valve (32) Crossover relief valve (33) Actuator piston (34) Charge valve (35) Charge valve (36) Winch drum (37) Freespool piston (38) Line (39) Brake piston (40) Case drain (41) Orifice (42) 2 way drive away valve (43) Drive away flow throttling valve (44) Line (45) Line (46) Servo valve (47) Orifice (48) Line (49) Line (50) Freespool clutch (51) Brake pack (52) Winch arrangement (53) Displacement control valve (54) Shift actuator piston (55) Winch drive away valve (56) Line (57) Winch hystat pump charge filter (58) Rear hystat pump charge filter (59) Front hystat pump charge filter (60) Line (61) Line (62) Standard implement valve arrangement (63) Standard implement valve (64) Connector (65) Connector (66) Connector (67) Single axis lever (Joystick) (68) Control ECM (Machine ECM) (69) Control ECM (Winch) (70) Drive away momentary switch (71) Freespool momentary switchThe momentary switch (71) which is normally closed to ground uses the "P783-C131 WH-18" wire which is identified in the schematic as "SS" in the implement electronic control module (69) at pin (36). When the switch is depressed for Freespool, a signal is sent via the open "P784-C132 OR-18" wire to connector (37) which is identified in the schematic as "TT" in the implement electronic control module (69). The duty cycle is then passed to the machine's electronic control module (68) at pin (6) through "CAN A DATA LINK (+)" via the "F711-P134 GN-18" wire from pin (56). The pin (56) which is identified in the schematic as "WW" is located in connector (69). The cycle then goes to pin (6) in connector (68) which is identified in the schematic as "CC". The duty cycle travels "CAN A DATA LINK (-)" via the "F712-P135 GY-18" wire to pin (3) which is identified in the schematic as "BB" in connector (68) from pin (70) which is identified in the schematic as "YY" which is located in connector (69) .The circuit then proceeds to the Drive Away solenoid. The Drive Away solenoid (8) receives the signal via wire "P870 FN1 BU-18" at pin (6) which is located in connector (68) which is identified as "FF". The signal ends in connector (1) at pin (1). The signal also travels via wire "J809 FN2 BK-18" starting at pin (1) which is located in connector (69) and identified in the schematic as "DD" and ends at pin (2) in connector (1)