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| Illustration 1 | g03610739 |
Winch (On rear of machine) (A) Clutch control lever | |
The winch system operates hydraulically to roll in or roll out cable. The system consists of a hydraulic pump to operate the winch motor. The operation switches for the winch are inside the cab of the machine.
The winch has a clutch control lever (A) to disengage the drive in order to freewheel out the cable. (Disengaging moves the winch drum away from the motor.) To disengage, pull clutch control lever (A) up and rotate the lever clockwise one distinct click (detent).
Move the lever counter clockwise to engage the clutch.
When winch shifter (A) is engaged, the winch is operated by the buttons in the cab.
Winch Components
Winch Switches
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| Illustration 2 | g03610741 |
Winch switches (1) Winch in switch (2) Winch out switch | |
The winch switches (1) and (2) are located in the key pad of the right console. These switches control the winch in and the winch out functions.
The winch in switch (1) and winch out switch (2) are programmed as momentary switches. When these switches are pressed, the function is only enabled until the switch is released.
The switch logic provides input to the MD3 module and controls the arming, winch in and out solenoids.
Fuses and Diodes
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| Illustration 3 | g03610758 |
Fuses and diodes (3) XA2-CAB2 fuse (4) MD3 fuse (5) MD3 memory fuse | |
The fuse panel is located behind the operators seat. The fuse panel has a black cover. The cover provides access to the fuses. The cover is removed in the above illustration. The fuses receive power when the main power relay is energized and the key switch is in the ON position.
The XA2-CAB2 fuse (3) transfers power to the XA2-CAB2. The XA2-CAB2 fuse is located on the fuse panel in position "5".
The MD3 fuse (4) transfers power to the MD3 module. The MD3 fuse is located on the fuse panel in position "12".
The MD3 memory fuse (5) transfers power to the MD3 module. The MD3 memory fuse is located on the fuse panel in position "14".
Winch Motor
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| Illustration 4 | g03610761 |
Winch motor (6) Winch motor (7) Port "A" (8) Port "B" | |
The winch motor (6) is located at the rear of the machine. The access to this component is through the lower engine access panels.
The winch motor (6) is a fixed-displacement gerotor motor. The output shaft of the motor drives the winch.
Standard rotation with port "A" (7) pressurized is clockwise.
Winch Manifold
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| Illustration 5 | g03610763 |
Winch manifold (9) Winch arming solenoid (10) Winch out solenoid (11) Winch manifold (12) Winch in solenoid | |
The winch manifold (11) is located at the right side of the engine compartment. The access door on the right side of the machine provides access to this component. The rear hinged plate (shown removed) is another access to the winch manifold.
The winch manifold (11) receives hydraulic oil from the implement pump. The winch arming solenoid (9) provides oil flow in the manifold when winch function is selected.
The winch in solenoid (12) and winch out solenoid (10) activate to provide hydraulic flow to the winch motor.
The winch solenoids are controlled by the keypad switches via the MD3 and XA2-CAB2 module.
Winch Electrical Operation
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| Illustration 6 | g03610777 |
Winch Electrical Schematic (1) From switched MD3 fuse (2) From unswitched MD3 fuse (3) From XA2-CAB2 fuse (4) Winch in solenoid (5) Winch out solenoid (6) Winch arming solenoid (7) MD3 +RTC resistor (8) Keypad (9) MD3 module (10) XA2-CAB2 module | |
Power Distribution
When the electrical disconnect switch is in the ON position, power is delivered to the unswitched MD3 fuse (2). Power transfers from the unswitched MD3 fuse to the keypad (8) and to the MD3 module (9) .
When the engine start switch is in the ON position and the switched buss relay is energized, power transfers to switched MD3 fuse (1) and XA2-CAB2 fuse (3). Power transfers from the switched MD3 fuse (1) to the MD3 module (9). Power also transfers from the XA2-CAB2 fuse to the XA2-CAB2 module (10) .
Power transfers from the unswitched MD3 fuse (2) to terminal "C1- 7" of the MD3 module (9) and terminal "1" of the keypad (8). This voltage provides the main power source for the MD3 module and keypad.
Power transfers from the switched MD3 fuse (1) to terminal "C1- 11" of the MD3 module (9). This voltage provides the wake-up signal to the MD3 module.
Power transfers from the switched MD3 fuse (1) to terminal "5" of the keypad (8). This voltage provides the power to the switches to energize the winch solenoids.
Power transfers from the XA2-CAB2 fuse (3) to terminal "28" of the IQAN XA2-CAB2 module (10). This voltage provides the main power source for the IQAN XA2-CAB2.
Winch Operation
WINCH IN
When winch in switch-on keypad (8) is held in the pressed position, the command signal is sent to MD3 module (9) via CAN lines.
When MD3 module (6) receives the signal, the MD3 processes the command and signals XA2-CAB2 module (10) via CAN to energize winch arming solenoid (6) and winch in solenoid (4). The XA2-CAB2 transfers power from terminal "9" to terminal "1" of the winch arming solenoid. The XA2-CAB2 module also transfers power from terminal "8" to terminal "1" of the winch in solenoid.
WINCH OUT
When winch out switch-on keypad (8) is held in the pressed position, the command signal is sent to MD3 module (9) via CAN lines.
When MD3 module (6) receives the signal, the MD3 processes the command and signals XA2-CAB2 module (10) via CAN to energize winch arming solenoid (6) and winch out solenoid (5). The XA2-CAB2 transfers power from terminal "9" to terminal "1" of the winch arming solenoid. The XA2-CAB2 module also transfers power from terminal "22" to terminal "1" of the winch out solenoid.
Winch Hydraulic Operation
Disarmed
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| Illustration 7 | g03610781 |
DISARMED (1) Pressure reducing valve (2) Winch control valve (3) Relief valves (4) Return to filter (5) From implement pump (6) From implement pump valve (7) To loading manifold (8) Winch resolver (9) Winch arming valve (10) Winch motor | |
The hydraulic winch system includes winch motor (10), passive valves, and solenoid-operated valves. When the winch system is disarmed, the system receives oil from implement pump (5). Supply from the pump is sent through pressure reducing valve (1) to winch arming valve (9) and winch control valve (2) .
When the winch system is disarmed, winch resolver (7) directs flow from implement pump valve (6) to loading manifold (7). In this configuration, the winch is inoperative and has no effect on the implement pump operation.
Armed - Winch In
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| Illustration 8 | g03610783 |
ARMED - Winch In (1) Pressure reducing valve (2) Winch control valve (3) Relief valves (4) Return to filter (5) From implement pump (6) From implement pump valve (7) To loading manifold (8) Winch resolver (9) Winch arming valve (10) Winch motor | |
The hydraulic winch system includes winch motor (10), passive valves, and solenoid-operated valves. When the winch system is selected to winch in, the system receives oil from implement pump (5). Supply from the pump is sent through pressure reducing valve (1) to winch arming valve (9) and winch control valve (2) .
When the winch system is selected to winch in, winch arming valve (9) is energized, redirecting flow through winch resolver (8) to loading manifold (7). This redirected flow allows the loading valve and the implement pump to prioritize flow between the winch system and other implements.
When the winch system is selected to winch in, winch control valve (2) is energized, sending the oil flow to relief valves (3) and winch motor (10). Oil flows through the operating winch motor and drains to the return to filter (4) .
When the winch system is selected to winch out, operation is similar to winch-in, however the winch out solenoid of winch control valve (2) is energized. This action reverses flow to winch motor (10), reversing the motor direction.