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| Illustration 1 | g03136838 |
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Dual Tilt Lever (1) Blade Control Lever (6) Ripper Control Lever (8) Implement Lockout Switch (9) Implement Valve Solenoids (11) Dual Tilt Valve Solenoid (13) Pin Puller Solenoid (15) Hydraulic ECM (16) Hydraulic Oil Temperature Sensor (18) Implement Pump Pressure Sensor (20) Steering Control Lever (21) Steering Motor Speed Sensor (25) Filter Bypass Switch (26) Charge Pressure Sensor (27) Power Train ECM (28) Implement Lockout Valve Solenoid (29) Rotary Position Sensors (31) Steering Pump Solenoid (Left Steer) (34) Fan Drive Pump Pressure Sensor (37) Reversing Valve Solenoid (38) Fan Drive Pump Solenoid | |
Location of Components for the Implement Electrical System
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| Illustration 2 | g01103800 |
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(1) Blade Control Lever
(2) Buttons (ABA Control) (3) Thumb Switch (Blade Pitch) | |
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| Illustration 3 | g01450187 |
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(If Equipped) (1) Blade Control Lever (2) Buttons (ABA Control) (3) Thumb Switch (Blade Pitch) | |
Blade control lever (1) controls the movement of the blade. Moving the lever forward will lower the blade. Similarly, moving the lever backward will raise the blade. Moving the lever left and right tilts the blade. Thumb switch (3) controls blade pitch. Buttons (2) control the Auto Blade Assist (ABA). Left button (2) activates segments in the Auto Blade Assist cycle. There is one segment per each push of the button. Right button (2) cancels Auto Blade Assist mode in order to activate manual operation. The trigger switch on the back of the lever (not shown) toggles between dual tilt and single tilt.
Blade control lever (1) is located on the right console of the operator station.
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| Illustration 4 | g01103801 |
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(4) Thumb Switch (Ripper Lift)
(5) Finger Switch (Ripper Tip) (6) Ripper Control Lever (7) Button (Auto Stow Control) | |
Ripper control lever (6) controls the movement of the ripper (if equipped). Thumb switch (4) raises the ripper and the switch also lowers the ripper. Finger switch (5) moves the shank in and the switch also moves out the shank. Button (7) activates the Auto Stow function.
Ripper control lever (6) is located to the rear of the blade control lever on the right console of the operator station.
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| Illustration 5 | g01103805 |
| (8) Implement Lockout Switch | |
Implement lockout switch (8) de-energizes the implement lockout solenoid on the pilot manifold in order to block pilot oil. When pilot oil is not available, the implements are disabled.
Implement lockout switch (8) is located on the panel above the right console of the operator station. The implement lockout switch is the first switch from the left.
Solenoids for the Implement Control Valves
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| Illustration 6 | g03136856 |
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(9a) Bulldozer Lift Control Valve
(9b) Bulldozer Tilt Control Valve (9c) Ripper Lift/Winch Control Valve (9d) Ripper Tip Control Valve (10) Implement Valve Stack | |
Movement of the blade and of the ripper is controlled by valves that regulate the flow of oil to the hydraulic cylinders. Each implement control valve contains two implement control valve solenoids (9).
Implement valve stack (10) is located at the rear of the machine. Implement control valve solenoids (9a) through (9d) are located on the Implement control valves, as shown.
Solenoid for the Implement Lockout Valve
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| Illustration 7 | g02580958 |
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(10) Implement Valve Stack
(28) Implement Lockout Valve Solenoid | |
Implement lockout valve solenoid (28) is located on the pilot manifold for implement valve stack (10).
When implement lockout valve solenoid (28) is energized, pilot oil is directed to the implement control valves. When implement lockout valve solenoid (28) is de-energized, pilot oil is blocked from flowing to the implement control valves.
Solenoid for the Dual Tilt Valve (If Equipped)
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| Illustration 8 | g01103814 |
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(11) Dual Tilt Valve Solenoid
(12) Dual Tilt Valve | |
The dual tilt valve has three modes of operation: dual tilt, single tilt and blade pitch. In dual tilt mode, the dual tilt valve regulates the flow of oil to both tilt cylinders. This flow allows faster tilting and a greater tilt angle. In single tilt mode, oil flows to one cylinder while the other cylinder acts as a brace. Maximum pry out force is achieved. Blade pitch mode allows the operator to change the vertical angle of the blade hydraulically without leaving the cab.
The modes of operation are activated by dual tilt valve solenoid (11).
Dual tilt valve solenoid (11) is located on dual tilt valve (12). Dual tilt valve (12) is located inside the left side of the radiator guard.
Solenoid for the Pin Puller Valve (Ripper) (If Equipped)
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| Illustration 9 | g01103820 |
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(13) Pin Puller Solenoid
(14) Pin Puller Valve | |
If the machine is equipped with a single shank ripper, a pin puller cylinder and pin puller valve (14) may be installed. The pin puller cylinder allows the depth of the shank to be easily adjusted. Flow of power train oil to the pin puller cylinder is regulated by the pin puller valve. The pin puller valve is activated by pin puller solenoid (13).
Pin puller valve (14) is mounted to the rear of the transmission case. Pin puller solenoid (13) is located on pin puller valve (14).
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| Illustration 10 | g01103824 |
| (15) Hydraulic ECM | |
Hydraulic ECM (15) receives input signals from various switches and sensors in the hydraulic system. After the hydraulic ECM processes the input signals, output signals are sent to the appropriate components.
Hydraulic ECM (15) is located behind the seat and a panel at the rear of the operator station.
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| Illustration 11 | g01103831 |
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(16) Hydraulic Oil Temperature Sensor
(17) Hydraulic Oil Tank | |
Hydraulic oil temperature sensor (16) measures the temperature of the hydraulic oil in the hydraulic oil tank. The sensor sends a signal to the hydraulic ECM that indicates the hydraulic oil temperature.
Hydraulic oil temperature sensor (16) is located on the front of hydraulic oil tank (17) just in front of the fuel tank.
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| Illustration 12 | g02581018 |
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(18) Implement Pump Pressure Sensor
(19) Pilot Manifold | |
Implement pump pressure sensor (18) measures the oil pressure of the implement pump at inlet manifold (19). The sensor sends a signal to the hydraulic ECM that indicates the pump output pressure.
Implement pump pressure sensor (18) is located on inlet manifold (19).
Location of Components for the Steering Electrical System
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| Illustration 13 | g01103961 |
| (20) Steering Control Lever | |
Steering control lever (20) is located on the left console in the cab. In FORWARD gear, push the steering control lever away from the operator for STEER LEFT. In FORWARD gear, pull the steering control lever toward the operator for STEER RIGHT. The position sensors in the steering control lever send a signal to the power train ECM. The power train ECM controls the response of the steering hydraulic system.
Speed Sensor for the Steering Motor
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| Illustration 14 | g01103965 |
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(21) Steering Motor Speed Sensor
(22) Steering Motor (23) Housing | |
Steering motor (22) is installed into the front of the main case on the left side of the machine. This motor is a fixed displacement bent axis motor which can turn in either direction. The direction of rotation is determined by the input flow to the motor from the steering pump. The output shaft of the steering motor turns the steering differential, which causes the machine to turn.
Steering motor speed sensor (21) is located in housing (23). Steering motor speed sensor (21) measures the rotation of the output shaft on steering motor (22).
Charge Pressure Sensor and Filter Bypass Switch
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| Illustration 15 | g02581084 |
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| Illustration 16 | g02581059 |
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(24) Steering charge filter
(25) Filter by pass switch (26) Charge pressure sensor | |
Filter bypass switch (25) is located in the filter housing for steering charge filter (24), as shown. When the filter element is full of debris and the bypass valve opens, filter bypass switch (25) will open. The operator will be notified with a warning message from Advisor. If this message occurs and the oil is at normal operating temperature, inspect the filter element for restrictions.
Charge pressure sensor (26) monitors the charge oil pressure before the charge oil flows through the charge filter. Charge pressure sensor is located on the implement stack.
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| Illustration 17 | g01103968 |
| (27) Power Train ECM | |
Power train ECM (27) is located behind a panel at the rear of the operator station. The power train ECM receives electrical signals. Then, the ECM sends electrical signals in order to control the response of the steering hydraulic system.
Rotary Position Sensors on the Steering Control Lever
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| Illustration 18 | g01103974 |
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(20) Steering Control Lever
(29) Rotary Position Sensors | |
Three rotary position sensors (29) sense the movement of steering control lever (20) when the steering control lever is moved to STEER LEFT or STEER RIGHT. The sensors inform the power train ECM of the position of the steering control lever. Position sensors (29) are located at the base of the housing of the steering control lever.
Solenoids on the Steering Pump
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| Illustration 19 | g01103977 |
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(30) Steering Pump
(31) Pump Control Solenoid (Right Steer) (32) Pump Control Solenoid (Left Steer) | |
Pump control solenoid (31) and pump control solenoid (32) are located on steering pump (30). The pump control solenoids control the actuator piston in steering pump (30).
Location of Components for the Fan Electrical System
Reversing Switch (If Equipped)
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| Illustration 20 | g01104110 |
| (33) Reversing Switch | |
Reversing switch (33) is located on the right console in front of the blade control lever. The reversing switch allows the operator to reverse the direction of the fan manually.
Pressure Sensor for the Fan Drive Pump
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| Illustration 21 | g01104111 |
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(34) Fan Drive Pump Pressure Sensor
(35) Fan Drive Pump | |
Fan drive pump pressure sensor (34) measures the pressure at the outlet of the fan pump. This oil is delivered to the inlet side of the fan motor. This pressure sensor sends a signal to the engine ECM. The engine ECM uses this signal to control pump output.
Fan drive pump pressure sensor (34) is located on fan drive pump (35), as shown.
Solenoid for Reversing Valve (If Equipped)
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| Illustration 22 | g01104112 |
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(36) Fan Reversing Valve
(37) Reversing Valve Solenoid | |
Reversing valve solenoid (37) on reversing valve (36) is located inside the front radiator guard.
Reversing valve solenoid (37) directs pilot oil to the reversing valve spools in order to change the direction of the fan drive motor.
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| Illustration 23 | g01104113 |
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(35) Fan Drive Pump
(38) Fan Drive Pump Solenoid | |
Fan drive pump solenoid (38) for fan drive pump (35) is located on fan drive pump (35), as shown. The fan drive pump is mounted to the upper left portion of the engine flywheel housing.
Fan drive pump solenoid (38) controls the pump control valve. The pump control valve upstrokes the fan drive pump or the pump control valve destrokes the fan drive pump.
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| Illustration 24 | g01106486 |
| (39) Engine ECM | |
Engine ECM (39) is located on the left side of the engine. Engine ECM (39) receives input signals from the pressure sensor for the demand fan. Engine ECM (39) controls the solenoid for the fan pump, the solenoid for the fan bypass valve (if equipped), and the solenoid for the reversing valve (if equipped).