Engage - When the quick coupler is engaged, it extends the coupler pin to lock in the work tool.
Disengage - When the quick coupler is disengaged, it retracts the coupler pin to unlock the work tool.
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| Illustration 1 | g01407787 |
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Drive Motor Solenoid | |
The drive motor solenoid is used to control the displacement of the hydrostatic motor, which is used as part of the hydrostatic control of the drivetrain. There are two drive motors on the 910K High Rimpull and the 914k. There is one drive motor on the 910K Standard Rimpull machine.
Lift (Raise & Lower) Solenoids
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| Illustration 2 | g03023599 |
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Illustration for Lift Raise & Lower Solenoids | |
These solenoids are actuated by the ECM to control the direction (and amount of) hydraulic flow in the lift raise and lower auxiliary hydraulic circuit.
Tilt (Rackback & Dump) Solenoids
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| Illustration 3 | g03023599 |
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Illustration for Tilt Rackback & Dump Solenoids | |
These solenoids are actuated by the ECM to control the direction (and amount of) hydraulic flow in the tilt rackback and dump auxiliary hydraulic circuit.
3rd Function Forward & 3rd Function Reverse Solenoids
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| Illustration 4 | g03023599 |
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Illustration for 3rd Function Fwd & Rev Solenoids | |
These solenoids are actuated by the ECM to control the direction (and amount of) hydraulic flow in the 3rd function auxiliary hydraulic circuit. See the “3rd Function Control” subsection in Systems Operation, "Features" of this document for further description of the control feature.
Pump Forward & Pump Reverse Solenoids
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| Illustration 5 | g03739295 |
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Pump Forward & Pump Reverse Solenoids | |
These solenoids are energized by the ECM to engage forward or reverse drive. The activation state of these solenoids determines the direction of hydraulic flow in the drive motor. The direction is controlled by the Hystat Pump Forward Solenoid and Hystat Pump Reverse Solenoid. These are PWM solenoids that also determine the displacement.
Hystat Pump Pilot Pressure Supply Solenoid
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| Illustration 6 | g03739116 |
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Illustration for the Hystat Pump Pilot Pressure Supply Solenoid | |
The solenoid allows the ECM to inhibit machine drive by removing pilot hydraulic supply pressure to the hydrostatic pump.
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| Illustration 7 | g01408026 |
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Illustration for the Implement Pilot Solenoid | |
Allows the ECM to inhibit implement movement by removing pilot hydraulic supply pressure to the pilot solenoids. Implement movement is comprehensively inhibited by:
- Removing pilot hydraulic supply pressure to all pilot solenoids by de-energizing the implement lockout solenoid.
- Overriding all electro-hydraulic demands to zero (no movement).
Detent, Defroster, Reverse Lamp, Ride Control, Intermittent Wiper 2, Bypass, Differential Lock
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| Illustration 8 | g01408119 |
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Schematic for the Detent, Defroster, Reverse Lamp, Ride Control, Intermittent Wiper 2, Bypass and Differential Lock | |
The system will activate the rear window defrost function by turning on the defrost relay in response to a detected release-depress cycle of the defrost momentary switch. The relay will remain on for the amount of time given by the value of the defrost timer configuration parameter.
The relay circuit output driving the backup alarm and reversing lights is turned ON when the overall direction request to the hystat/transmission control is reverse. This will be the case when the operator FNR request passed to the hystat is "reverse" or "R" and there are no features overriding this request, such as the following:
- Parking brake latch to neutral
- Machine configuration error
- Machine Security Systems (MSS) override
The ride control relay is enabled or disabled based upon the operator command (off mode) or the ground speed (auto mode).
The intermittent wipe relay is activated by the ECM in an on/off pattern to affect the intermittent wipe function. The ECM initiates each wipe, by activating the relay for 1 second.
From system initialization, the differential lock state will default to the unlocked state (relay not energized), regardless of input states.
The differential lock relay will be energized when the differential lock has been requested and the conditions are correct. See subsection “Differential Lock” in Systems Operation, "Features" for more details.