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| Illustration 1 | g06346088 |
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(1) Transmission modulator control (inching pedal)
(2) Power port 12V (if equipped) (3) Aux port (4) Snow wing lift control (if equipped) (5) Snow wing tilt control (if equipped) (6) Blade lift control for the left side (7) Ripper control (if equipped) (8) Blade sideshift lever (9) Blade tip control lever (10) Blade circle drive lever (11) Hazards (12) Warning beacon (13) Head/Tail lights (14) Front and rear work lights (15) Differential lock control (16) Centershift control (17) Articulation control (18) Wheel lean control (19) Snow plow/dozer lift control / Mount scarifier (if equipped) (20) Blade lift control for the right side (21) Dozer angle control (if equipped) (22) WAVS Display (23) Service brake control (24) Accelerator control | |
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| Illustration 2 | g06346092 |
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(25) Transmission control and parking brake control
(26) Throttle hold mode switch (27) Throttle speed set switch (28) Centershift control (29) Autoshift Control (30) Engine start switch (31) Heating and air conditioning controls (32) All wheel drive control dial (if equipped) (33) Aftertreatment regeneration switch (34) All wheel drive mode switch (if equipped) (35) Blade cushion (if equipped) | |
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| Illustration 3 | g06346099 |
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(36) Snow wing light (if equipped)
(37) Bluetooth microphone (if equipped) (38) Front defroster fan (if equipped) (39) Rear defroster fan (if equipped) (40) Rear window wiper and window washer (if equipped) (41) Lower front window wiper and window washer (if equipped) (42) Front window wiper and window washer (if equipped) (43) Heated mirror (if equipped) (44) Cab floodlight switch (if equipped) | |
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| Illustration 4 | g06346102 |
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(45) Directional turn signal (if equipped)
(46) Headlight dimmer switch (if equipped) (47) Steering wheel tilt control (48) Secondary steering test switch (49) Steering column tilt control | |
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| Illustration 5 | g06346107 |
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(50) Radio
(51) Interior dome light switch | |
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| Illustration 6 | g06346128 |
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(52) Service port
(53) Power port 12V | |
Transmission Modulator Control (Inching Pedal) (1)
The transmission modulator control (inching pedal) disengages the power to the wheels. Depress inching pedal to decrease the power to the wheels. A sensor will monitor the position of the pedal. As the pedal is depressed, the hydraulic pressure to the direction clutches will vary. When the pedal is depressed completely, the power to the rear wheels will be disengaged. The transmission modulator control (inching pedal) was designed and developed to be used in all loading conditions. The intent of the control was to provide the operator with the ability to vary the machine speed independent of engine speed for short durations. This becomes useful when the operator demands high controllability and maneuverability of the machine. Inching allows the operator to vary the machine ground speed while keeping engine speed high for quick implement response. Gears one through three FORWARD and the gears one through three REVERSE have been developed for modulator control (inching pedal) use. If the inching function is used in high loading situations, the operator should pick the optimal gear to match the load condition. If the operator constantly experiences machine stall (no forward or reverse movement) while inching, the operator should downshift to the next available gear.
Note: To ensure maximum transmission clutch life, avoid prolonged use of the transmission modulator control (inching pedal) when moving heavy loads. Rather, try to select a gear that will provide the same machine ground speed that the transmission modulator control (inching pedal) allowed previously. The transmission modulator control (inching pedal) can also be used to launch the machine into gear.
Note: Although direction changes can be performed with the transmission modulator control (inching pedal), the preferred method is to utilize Shuttle Shifting for machine direction changes. Shuttle Shifting ensures longer transmission clutch life and repeatable shift quality.
Note: Use of the transmission modulator control (inching pedal) is not to be used for shifting gears while the machine is moving. The use of the inching pedal during shifts may shorten the transmission clutch life and accelerate damage to the drive train.
The features and controls of the transmission are listed in table 1 below.
| Feature | Description |
| ET AutoCal | Fill calibration available on all eight clutches. Smoother shifting and better power transfer. |
| Shift Torque Management | Feature controls torque and/or speed during a shift, increases torque and/or speed after the shift. Ensures consistent power to the ground to minimize blade disruptions. Engine will lug back and shift duration will increase to limit shift harshness. Most noticeable on shuttle (directional) shifts, shifts launching the machine from the neutral position, and the double clutch shifts fourth to fifth forward and third to fourth reverse. |
| Load Compensation | Provides smooth shifts under light load conditions and under heavy loads or rapid acceleration shifting will be more aggressive to provide requested machine power. |
| Oil Temperature Compensation | Transmission actively monitors transmission oil temperature to compensate for changes in oil properties. Software compensates for transmission oil temperature for consistent transmission performance. |
| Neutral Coast Protection | Protects the transmission from potential clutch damage caused by high speed coasting in neutral. Transmission clutches may turn on or off while coasting in neutral (or with the inching pedal depressed) to prevent clutch damage and auto engagement. The operator may notice the driveline jerking if coasting in neutral. Coasting in neutral (or with the inching pedal depressed) is not a recommended manner of operation. |
| Engine Overspeed Protection | Limits engine speed to allow downshift to occur. Results in lower engine speed needed to perform a downshift. |
Note: Under certain conditions, the transmission will neutralize and prevent engine stall when the service brakes are fully engaged and the inching pedal is not depressed. The tandem tires will stop rotating. The LCD display will display NEUTRAL as the actual gear, the operator requested gear will change to allow speed matched transmission re-engagement when the service brake is disengaged and the ground speed is greater than
The Power Shift Transmission has the following standard options:
- 8 forward gears
- 6 reverse gears
- Inching allows the operator to control the machine at infinitely variable low ground speeds when precise maneuverability is demanded
The following methods may be used for shifting gears:
- Launching the machine from the neutral position
- Sequential speed shifting
- Shuttle shifting
Launching the Machine from the neutral Position
The operator can engage the transmission into gear by the following 2 methods:
- Automodulation
- Inching into gear
When automodulating into gear, the direction clutch will engage in a smooth and controlled manner. This machine launch method was developed to be performed at all engine speeds without shortening the life of the transmission.
Note: Gears 1 through 3 forward and gears 1 through 3 reverse have been developed for automodulation use. Gears above the 3rd gear forward and the 3rd gear reverse are not allowed from a stop because such shifts may shorten the transmission clutch life and such shifts may damage the drive train.
Note: Avoid automodulating into gear while the machine is under load. Repeated neutral to gear engagements under load may shorten the transmission clutch life.
Note: When automodulating into gear do not change the engine speed. If the engine speed is increased, the shift may result in a harsh engagement. The transmission modulator control (inching pedal) may also be used to engage the transmission into gear. Before selecting the direction with the transmission control lever, fully depress the transmission modulator control (inching pedal). After selecting the gear and after selecting the direction, release the transmission modulator control (inching pedal) slowly for the operation controlled clutch engagement. This only allows modulation up to a percent of the maximum capacity. Refer to Operation and Maintenance Manual, "Operator Controls - Transmission Modulator Control (Inching Pedal)" for additional information.
The motor grader transmission control has gear speed matching functionality that will limit the operator selectable gears to an acceptable range based upon machine speed. When launching the machine from a stop, the operator selectable gear range will be limited to gears one through three FORWARD and gears one through three REVERSE.
Speed matching will also limit the operator selectable gear range if the machine is in motion while the inching pedal is depressed or the transmission is in NEUTRAL. Under these conditions, speed match will automatically adjust the operator selected gear to an appropriate value based upon current machine speed. To return to the original desired gear, you must manually adjust the gear selection once the machine speed conditions are appropriate.
Transmission Under Speed Protection Strategy
Underspeed protection automatically downshifts the transmission to the next lower gear when the machine is being operated below 800 rpm and under load. The downshift will allow the engine to operate in a more appropriate speed range. If the engine continues below idle after the downshift the underspeed protection will automatically downshift the transmission to the next lower gear after a brief delay while the previous shift is completing. Operator requested gear updates to match the new gear after the underspeed downshift. If the previous gear is desired, the operator must manually command an upshift to return to the previous gear. Underspeed protection will not shift the transmission to NEUTRAL. To avoid automatic downshifts, the machine should be operated at or above 1000 rpm, where appropriate.
Note: Although direction changes can be performed with the transmission modulator control (inching pedal), the preferred method is to utilize Shuttle Shifting for machine direction changes. Shuttle Shifting ensures longer transmission clutch life and repeatable shift quality.
The Power Shift of the transmission allows the operator to adjust the transmission gear while the machine is in motion. The operator can obtain the optimal machine ground speed for the operation that is being performed by matching the transmission gear for the given engine speed. Use the upshift switch and use the downshift switch to adjust the transmission gear while you use the machine.
Depending on the gear, downshifting requires the engine to be at some speed less than full throttle before being executed to prevent the engine from overspeeding. Motor graders use Engine Controlled Downshifts (ECD) to control downshift gear requests. If the engine is at some speed above the inhibit point, Engine Controlled Downshifts (ECD) will automatically reduce the engine speed to allow the downshift. Upon shift completion, control of the engine speed will be given back to the operator. Similar to the upshifts, the downshifts are subject to a shift delay to prevent shift interruption.
Speed shifts can be performed in any loading condition, as speed shifts are automatically compensated for engine load. To lengthen the transmission clutch life and in order to prevent degradation of shift quality, the clutch modulation is adjusted according to load conditions. The compensated shifts minimize torque interruptions in order to maintain the load transfer during the transmission gear change.
Note: Do not utilize the transmission modulator control (inching pedal) when performing speed shifts. The Power-Shift transmission controls the clutch disengagement and the clutch engagement according to the requested shift.
Shuttle Shifting, also known as directional shifting, allows the operator to change the machine direction quickly and with minimal disruption to the ground surface being graded. The 140 transmission precisely controls the engagement of the direction clutch for a very smooth transition from one direction to the other. Control Throttle Shifting (CTS) may automatically control engine speed during the shuttle shift to maximize the shift. Using the transmission control lever as the operator input, shuttle shifts can be performed at any engine speed from gears 1F-3F to 1R-3R or from gears 1R-3R to gears 1F-3F. To perform a shuttle shift, simply select the opposite direction from the current selection on the transmission control lever. The direction change must be done in one continuous motion, the transmission control lever should not be in the neutral position for greater than 0.2 seconds. If a shuttle shift is requested while operating in a gear higher than those described above, the transmission controller will automatically downshift to a gear in the range of a shuttle shift.
Note: To prevent excessive transmission clutch wear, shuttle shifting is not recommended while using the ripper or while using the scarifier or while towing a heavy load. In these instances, either lift the implement sufficiently above the ground surface or bring the machine to a stop by using the transmission modulator control (inching pedal) and the service brake control before performing the shuttle shift.
Note: Although direction changes can be performed with the transmission modulator control (inching pedal), the preferred method is to utilize Shuttle Shifting for machine direction changes. Shuttle Shifting ensures longer transmission clutch life and repeatable shift quality.
Inching Pedal Neutralizer (Limited Inching)
Limited inching is a feature that inhibits modulator control (inching) pedal functionality in higher gears to help protect the drivetrain from excessive torque caused by using the inching pedal both in gear or while executing a shift. It can also improve shift quality for unloaded shifts when utilizing the modulator control (inching pedal) in higher gears. This feature is enabled on by default. Electronic Technician (ET) can be used to disable/enable the feature by configuring the "Inching Pedal Neutralizer Enable Status". The limited inching feature allows full inching functionality in gears 1 through 3 FORWARD and 1 through 2 REVERSE. In all other gears, inching commands that exceed 90% of the pedal travel for more than a half second will result in neutralization of the transmission. All other inching commands in these gears will not be used by the ECM and the transmission cannot be modulated in these gears. The limited inching strategy works with the speed matching strategy and will re-engage the appropriate speed matched gear when the inching pedal is released.
When enabled, if the machine is operating in a gear in which normal inching functionality is allowed and the operator commands an upshift into the inching neutralizer range while the inching pedal is fully depressed, the transmission will shift into neutral. Releasing the inching pedal will then engage the transmission into the desired gear.
When enabled, if the modulator control (inching pedal) is used while performing sequential speed shifts in higher gears, it may impact shift quality of loaded shifts due to the transmission neutralizing. If this occurs, it is recommended to not use the modulator control (inching pedal) during speed shifts.
Power Port 12V (2) (If Equipped)
Power Port 12 V (2) - If equipped, a 12 volt power port is located to the left of the operator on the cup holder. This power port can be used to power automotive electrical equipment or accessories. Remove the cap before use.
Snow Wing Lift Control (4) (If Equipped)
Note: Since the machine has several different options for the linkage, the location of the control may be different on your machine.
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RAISE - To raise the snow wing, pull back on lever (4). When you release lever (4), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - Lever (4) will return to the HOLD position when you release the lever. The blade will remain in the selected position.
LOWER - To lower the snow wing , push lever (4) forward. When you release lever (4), the lever will return to the HOLD position. The blade will remain in the selected position.
Snow Wing Tilt Control (5) (If Equipped)
Note: Since the machine has several different options for the linkage, the location of the control may be different on your machine.
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RAISE - To tilt the snow wing upward, pull back on lever (5). When you release lever (5), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - Lever (5) will return to the HOLD position when you release the lever. The blade will remain in the selected position.
LOWER - To tilt the snow wing downward, push lever (5) forward. When you release lever (5), the lever will return to the HOLD position. The blade will remain in the selected position.
Blade Lift Control for the Left Side (6)
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Blade LIFT - Pull back on lever (6) to raise the left end of the blade. When you release lever (6), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - When lever (6) is released from the LOWER position or from the LIFT position, lever (6) will return to the HOLD position. The blade will remain in the selected position.
Blade LOWER - Push lever (6) forward to lower the left end of the blade. When you release lever (6), the lever will return to the HOLD position. The blade will remain in the selected position.
Blade FLOAT - Push lever (6) to the most forward detent position. When you release lever (6), the lever will remain in the FLOAT position.
Note: Extra effort may be necessary to push lever (6) forward into the FLOAT (detent) position.
Note: When lever (6) is in the FLOAT position and the engine is turned off, lever (6) will not return to the HOLD position. Before you start the engine, return lever (6) to the HOLD position.
Ripper/Scarifier Lever (7) (If Equipped)
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Ripper/Scarifier RAISE (if equipped) - Move lever (7) backward to raise the ripper/scarifier. When you release lever (7), the lever will return to the HOLD position. The ripper/scarifier will remain in the selected position. |
HOLD - Lever (7) will return to the HOLD position when you release the lever. The ripper/scarifier will remain in the selected position.
Ripper/Scarifier LOWER - To lower the ripper/scarifier, push lever (7) forward. When you release lever (7), the lever will return to the HOLD position. The ripper/scarifier will remain in the selected position.
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Blade Sideshift RIGHT - Pull back on lever (8) to sideshift the blade to the right. When you release lever (8), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - Lever (8) will return to the HOLD position whenever lever (8) is released. The blade will remain in the selected position.
Blade Sideshift LEFT - Push lever (8) forward to sideshift the blade to the left. When you release lever (8), the lever will return to the HOLD position. The blade will remain in the selected position.
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Blade Tip FORWARD - Push lever (9) forward. The top of the blade will tip forward. Lever (9) will return to the HOLD position when you release the lever. The blade will remain in the selected position. |
HOLD - Lever (9) will return to the HOLD position when you release the lever. The blade will remain in the selected position.
Blade Tip BACK - Pull lever (9) backward. The top of the blade will tip backward. Lever (9) will return to the HOLD position when you release the lever. The blade will remain in the selected position.
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Circle Drive CLOCKWISE - To rotate the blade in a clockwise direction, pull back on lever (10). When you release lever (10), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - When you release lever (10), the lever will return to the HOLD position. The blade will remain in the selected position.
Circle Drive COUNTERCLOCKWISE - To rotate the blade in a counterclockwise direction, push lever (10) forward. When you release lever (10), the lever will return to the HOLD position. The blade will remain in the selected position.
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Hazard - Push in the top of switch (11) to activate the hazard lights. Push in the bottom of switch (11) to turn off the hazard lights. |
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Warning Beacon (12) (If Equipped) - Move switch (12) to the top position to turn on the beacon. Move switch (12) to the middle position to turn off the beacon. |
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Head/Tail Lights (13) - Push in the top of switch (13) to turn on the head/tail lights. Move switch (13) to the MIDDLE position to turn off head/tail lights. Push in the bottom of the switch to turn on the taillights only. |
Front and Rear Work Lights (14) (If Equipped)
Note: Before you turn on the front floodlights, you must turn on the head/tail lights.
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Front Floodlights (14) (If Equipped) - Push in the top of the switch to turn on the front lights and the tail lights. Move the switch to the middle position to turn off the work lights and the tail lights. Push in the bottom of the switch to turn on the front and rear work lights and the tail lights. |
Differential Lock Control (15)
| NOTICE |
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To prevent damage to the differential, do not engage the differential lock control at high speeds. Do not turn machine with differential lock engaged. Do not engage the differential lock control while one wheel is spinning. Decrease engine rpm until the wheel stops spinning. Anticipate using the differential lock before wheel slippage occurs. In areas of high resistance, it may be necessary to turn the machine slightly in order to aid in unlocking the differential lock. Decreasing the engine rpm may also be helpful. |
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Locked - Push the bottom of switch (15) to lock the differential. When the differential is locked, an indicator light will illuminate on the front dash. The differential lock will help to prevent wheel slippage. Use the differential lock when you grade on soft ground or on wet ground. Engage the differential lock only when the wheels are not slipping. |
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Unlocked - Push the top of switch (15) to unlock the differential. |
Lock the differential to increase the traction, as required.
Make sure that the differential is unlocked when you turn the machine or when you articulate the machine. Also, make sure that the differential is unlocked when you are roading the machine.
| NOTICE |
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Use of the differential lock when turning, articulating or roading may cause drive train component damage. |
When one of the tandem wheels encounters loose surfaces or slippery surfaces, the differential lock will provide maximum traction at all times by eliminating wheel spin. Any excessive uncontrolled wheel spin can cause accelerated wear on certain components of the drive train. This is due to inadequate lubrication while the wheel is spinning.
Do not engage the differential lock control (15) while one wheel is spinning. Decrease engine rpm until the wheel stops spinning. Anticipate using the differential lock before wheel slippage occurs.
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Centershift RIGHT - To move the drawbar to the right, pull back on lever (16). When you release lever (16), the lever will return to the HOLD position. The drawbar will remain in the selected position. |
HOLD - Lever (16) will return to the HOLD position when you release lever (16). The drawbar will remain in the selected position.
Centershift LEFT - To move the drawbar to the left, push lever (16) forward. When you release lever (16), the lever will return to the HOLD position. The drawbar will remain in the selected position.
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Articulation RIGHT - To move the rear of the machine to the right, pull back on lever (17). When you release lever (17), the lever will return to the HOLD position. The machine will remain in the selected position. |
HOLD - Lever (17) will return to the HOLD position when you release the lever. The machine will remain in the selected position.
Articulation LEFT - To move the rear of the machine to the left, push lever (17) forward. When you release lever (17), the lever will return to the HOLD position. The machine will remain in the selected position.
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Wheel Lean RIGHT - To lean the wheels to the right, pull back on lever (18). When you release lever (18), the lever will return to the HOLD position. The wheels will remain in the selected position. |
HOLD - Lever (18) will return to the HOLD position when you release the lever. The wheels will remain in the selected position.
Wheel Lean LEFT - To lean the wheels to the left, push lever (18) forward. When you release lever (18), the lever will return to the HOLD position. The wheels will remain in the selected position.
Snow Plow/Dozer Lift Control / Mount Scarifier (19) (If Equipped)
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LOWER - Push lever (19) forward to lower the snow plow/dozer blade. When you release lever (19), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - Lever (19) will return to the HOLD position when the lever is released. The blade will remain in the selected position.
RAISE - Pull back on lever (19) to raise the snow plow/dozer blade. When you release lever (19), the lever will return to the HOLD position. The blade will remain in the selected position.
FLOAT - Push lever (19) to the most forward detent position. When you release lever (19), the lever will remain in the FLOAT position.
Note: Extra effort may be necessary to push the lever forward into the FLOAT (detent) position.
Note: When lever (19) is in the FLOAT position and the engine is turned off, the lever will not return to the HOLD position. Before starting the engine, return lever (19) to the HOLD position.
Blade Lift Control for the Right Side (20)
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Blade LIFT - Pull back on lever (20) to raise the right end of the blade. When you release lever (20), the lever will return to the HOLD position. The blade will remain in the selected position. |
HOLD - When the lever is released from the LOWER position or the LIFT position, the lever will return to the HOLD position. The blade will remain in the selected position.
Blade LOWER - Push the lever forward to lower the right end of the blade. When you release lever (20), the lever will return to the HOLD position. The blade will remain in the selected position.
Blade FLOAT for the Right Side - Push the lever to the most forward detent position. When you release lever (20), the lever will remain in the FLOAT position.
Note: Extra effort may be necessary to push the lever forward into the FLOAT (detent) position.
Note: When the lever is in the FLOAT position and the engine is turned off, the lever will not return to the HOLD position. Before you start the engine, return the lever to the HOLD position.
Dozer Angle Control (21) (If Equipped)
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RIGHT - Pull back on lever (21) to angle the dozer blade to the right. When you release lever (21), the lever will return to the HOLD position. The dozer blade will remain in the selected position. |
HOLD - Lever (21) will return to the HOLD position when the lever is released. The dozer blade will remain in the selected position.
LEFT - Push lever (21) forward to angle the dozer blade to the left. When you release lever (21), the lever will return to the HOLD position. The dozer blade will remain in the selected position.
For more information on WAVS, refer to Operation and Maintenance Manual, SEBU8157, "Work Area Vision System".
Depress pedal (23) to engage the service brake. Use the service brake to reduce ground speed. Use the service brake to stop the machine.
Release pedal (23) to disengage the service brake.
Depress pedal (24) to increase the engine speed. The engine will return to the setting of the throttle control when you release pedal (24). Release pedal (24) to decrease the engine speed. The engine will return to the setting of the throttle control when you release pedal (24).
Transmission Control and Parking Brake Control (25)
Lever (25) controls both the transmission and the parking brake.
Note: You must move lever (25) from the PARKING BRAKE ENGAGED position before you can move lever (25) to the NEUTRAL position.
Forward - Move lever (25) to the left and pull back the lever to the desired forward speed setting. The machine will move forward.
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Neutral - Move lever (25) to the NEUTRAL position when you are preparing to park the machine. |
Reverse - Move lever (25) to the right and pull back lever (24) to the desired speed. The machine will move in reverse.
Note: To improve shift performance, all shifts above 4F and 3R should be performed at or above 1600 rpm. Using the throttle hold mode feature will improve shift smoothness and will reduce shift variability.
- Cycle all controls for inspection of proper operating function.
- Make sure that the accelerator control is in the LOW IDLE position.
- Raise all the equipment.
- Engage the service brake.
- Move transmission control (lever) (25) to the position for the desired direction and for the desired speed.
- Push down the accelerator control until the desired speed is attained.
- Upshift one speed at a time. Increase engine speed, as required.
Show/hide table
NOTICE To prevent possible damage to the machine, reduce ground speed before downshifting.
Note: Downshift speed protection is provided while you downshift, but the following steps are recommended:
- Downshift 1 speed at a time.
- To change the machine's direction of travel, slow the machine by using the service brakes. Then move transmission control (lever) to the position for the desired direction and for the desired speed. After you select the desired direction and the desired speed, release the service brakes.
Note: In the event of the failure of a transmission solenoid or in the event of the failure of the position sensor, the machine is equipped with a limp home mode. The following procedure should be used in such a situation.
If the position sensor fails, not all of the solenoids will operate properly. You can only use the gears that have solenoids that are operating properly. Shift the transmission control to the NEUTRAL position. Next, shift the transmission control into a FORWARD position or REVERSE position. Not all speeds will operate.
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Personal injury could result from the sudden stop of the machine. If the brake system hydraulic pressure drops below normal operating pressure, an action alarm will sound and the brake alert indicators on the operator's panel will flash. The action light will start flashing. If the hydraulic pressure continues to drop further, the parking brake will engage automatically. Be prepared for a sudden stop. Correct the reason for the loss of hydraulic pressure. Do not move the machine without normal brake hydraulic pressure. |
| NOTICE |
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Do not engage the parking brake while the machine is moving unless the service brake fails. The use of the parking brake as a service brake in regular operation will cause severe damage to the parking brake. |
| NOTICE |
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Moving the machine with the parking brake engaged can cause excessive wear or damage to the brake. If necessary, have the brake repaired before operating the machine. |
Transmission control (lever) (25) is on the right side of the operator in the operator compartment.
The parking brake is controlled by lever (25). Engage the parking brake after the machine has stopped.
To engage the parking brake, push down on lever (25) as you push lever (25) forward into the PARKING BRAKE ENGAGED position. When lever (25) is released, the parking brake will remain engaged.
To release the parking brake, push down on lever (25) as you pull back on lever (25). Lever (25) is no longer in the PARKING BRAKE ENGAGED position. When you release lever (25), the parking brake will remain disengaged.
Throttle Hold Mode Switch (26)
This is a three-position switch. Switch (26) allows the operator to set the mode for the throttle hold function. The following modes can be selected: automatic, off, and manual.
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Automatic Mode - Push the top of switch (26) to put the throttle control in automatic mode. When switch (26) is in auto mode, the function of the throttle will be similar to a cruise control. Use the accelerator pedal to achieve the desired engine speed. Push switch (26) forward to set the throttle at the current engine speed. Use switch (26) to change the throttle setting. |
If either of the following conditions occur, the throttle setting of auto mode will be suspended and the engine speed will adjust to the setting of the accelerator pedal:
- The accelerator pedal is moved more than 20 percent.
- The service brake is applied.
Push switch (26) backward to resume the preset engine speed.
The RESUME feature will be disabled if any of the following conditions occur:
- Switch (26) is moved to OFF position.
- Switch (26) is moved to MANUAL mode.
- The key switch is moved to the OFF position.
- The engine is stalled.
The indicator light for the throttle lock will be illuminated when the throttle setting is locked during auto mode.
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Manual Mode - Push the bottom of switch (26) to put the throttle control in manual mode. Use the accelerator pedal to achieve the desired engine speed. Push switch (26) forward to set the throttle at the current engine speed. Use switch (26) to change the throttle setting. |
The engine speed will increase if the accelerator pedal is pressed past the throttle setting. When the accelerator pedal is released, the engine will return to the preset engine speed. The following conditions will not cause the throttle lock to disengage:
- The service brake is applied.
- The accelerator pedal is moved.
The throttle lock will be disengaged if either of the following conditions occur:
- Switch (26) is moved to the OFF position.
- The key switch is moved to OFF position.
The RESUME feature will not be available after the throttle lock is disengaged.
The indicator light for the throttle lock will be illuminated when the throttle is locked during MANUAL mode.
Off Mode - Push switch (26) into the center position to put the throttle control in off mode. When switch (26) is in the OFF position, auto mode and manual mode will not work. The throttle will only be operated by the accelerator pedal in OFF mode.
Throttle Speed Set Switch (27)
Switch (27) allows the operator to set the speed of the throttle. As required, move switch (27) to change the engine speed.
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SET/ACCEL - When switch (26) is not in off mode, push switch (27) forward to set the engine speed. Push switch (27) forward again to increase the engine speed by 100 rpm. Push switch (26) forward and hold down switch (27) to increase the engine speed by 700 rpm/sec. |
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RESUME/DECELERATE - When switch (26) is not in off mode, push switch (27) backward to decrease the engine speed by 100 rpm. Push switch (27) backward and hold down switch (27) to decrease the engine speed by 700 rpm/sec. When switch (26) is in auto mode, push switch (26) backward to resume the preset engine speed. |
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Centershift Lock Control - Move switch (28) to the bottom position to engage the centershift lock. To disengage the centershift lock, push the locking tab and move switch (28) to the top position. |
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Personal injury could result from the sudden movement of the blade when the centershift lockpin is released. Before releasing the centershift lockpin be sure that all personnel are clear of the blade area, the circle and blade are centered under the machine and the blade has been lowered to the ground. |
- Use centershift control lever (28) to shift the drawbar. Move the drawbar toward the area that will be graded. Place both lift levers in FLOAT position to ground the moldboard.
- Move switch (28) to the DISENGAGED position. When switch (28) is in the DISENGAGED position, an indicator light will illuminate on the front dash.
- If you want to move the link bar to the first hole to either side of center or the second hole to either side of center, proceed to Step 3.a. If you want to move the link bar to the third hole to either side of center or to the farthest hole to either side of center, proceed to Step 3.c.
- Make sure that the blade lift levers are still in the FLOAT position. Move centershift control lever (16) in the opposite direction that moved the lever to position the drawbar in Step 1. The centershift cylinder moves. This allows the linkage to roll freely. Also, the link bar will move sideways.
- Continue with Step 4.
- Move the blade lift levers out of FLOAT position.
- Simultaneously, move centershift control lever (16) forward and move the right blade lift lever (20) forward. At the same time, pull back on the left blade lift lever (6).
- Line up the centershift lock pin with the desired hole in the link bar. Use the indicator that is on the right lift arm to check the alignment.
- Move switch (28) to the ENGAGED position. The indicator light for the centershift lock will turn off when the centershift lock pin is engaged.
Note: If the indicator light for the centershift lock does not turn off, slightly move the link bar for the centershift to align the hole with the centershift lock pin.
- Sideshift the link bar toward the area that will be cut. Use the blade lift cylinders to adjust the angle of the slope that will be cut.
Autoshift Control (29) (If Equipped)
The autoshift control (if equipped) is located in the operator compartment to the right of the operator. The number of switches on your machine may vary. The autoshift control will always occupy the position at the far left of the operator's console.
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Autoshift Control - Move the switch to the top position to turn ON the autoshift control. Move the switch to the bottom position to turn OFF the autoshift transmission. |
Note: In the event of the failure of a transmission solenoid, the machine is equipped with a limp home mode. The following procedure should be used in such a situation.
When one of the solenoids fails to operate properly, the machine can use the limp home mode. You can only use the gears that have solenoids that are operating properly. Shift the transmission control to the NEUTRAL position. Next, shift the transmission control into a FORWARD position or REVERSE position. Not all speeds will operate.
Note: The autoshift function is an optional attachment on this machine.
The lowest gear of the range can be configured to be any gear from 1F to 3F and 1R to 3R. The default lowest gear shall be 3F/3R gear.
When autoshift control (29) is in the ON position and transmission control (25) is any gear that is higher than the lowest gear that has been configured by the dealer, the machine will upshift automatically. The transmission will automatically upshift from the lowest configured gear through the gear that has been selected by the operator. Also, the transmission will downshift automatically when autoshift control (29) is in the ON position. The transmission will not shift to a higher gear than the gear that is selected by transmission control (25).
- Move autoshift control (29) to the ON position.
- Move transmission control (25) to the desired top running gear. This gear must be above the configured lowest gear. The autoshift alert indicator will turn on. The transmission will start in lowest configured gear or 3F. The transmission will upshift automatically. The upshift will be based upon engine RPM and machine ground speed. The transmission will downshift automatically to no lower than the lowest configured gear.
The autoshift function will be overridden when transmission control (25) is moved below the lowest configured gear. The autoshift alert indicator will turn off when autoshift control (29) is in the ON position and transmission control (25) is in any gear that is below the lowest configured gear.
The transmission will stay in the specified gear. The autoshift function can be enabled again by moving transmission control (25) to any gear above the lowest configured gear. The autoshift alert indicator will turn on and the transmission will engage the autoshift function.
The machine is controlled manually by the operator with autoshift control (29) in the OFF position. When autoshift control (29) is in the OFF position, the transmission shifts when transmission control (25) is moved manually. The autoshift alert indicator is off.
When autoshift control (29) is turned to the OFF position and transmission control (25) is positioned higher than the current gear, the autoshift alert indicator will blink. The autoshift alert indicator will blink until transmission control (25) is moved to the current operating gear. The autoshift alert indicator will turn off. The transmission will stay in the gear specified by transmission control (25).
When you turn switch to the ON position, electrical power is supplied to the systems.
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Engine Stop (Shutdown) - Turn the key to this position to disable the delayed engine shutdown (DES). The engine will be shut down immediately. |
Note: Shutting down the engine using this method is considered a hard shutdown which disables the DES.
Note: A warning message and/or Audible alarm will be initiated. A fault code will be logged for improper engine shutdown if exhaust temperature is above limit.
Note: Overriding delayed engine shutdown may reduce engine and machine system component life.
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OFF - When you insert the engine start switch key and when you remove the engine start switch key, the engine start switch must be in the OFF position. Also, turn the engine start switch to the OFF position to stop the engine. |
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ON - To activate the electrical circuits in the cab, insert the engine start switch key and turn the engine start switch clockwise to the ON position. |
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START - To start the engine, insert the engine start switch key and turn the engine start switch clockwise to the START position. When the engine start switch key is released, the engine start switch will return to the ON position. |
Note: If the engine fails to start, return the engine start switch to the OFF position. This must be done before you attempt to start the engine again.
Heating and Air Conditioning Controls (31) (If Equipped)
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| Illustration 7 | g06346218 |
Temperature Variable Control (31A)
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Temperature Variable Control (31A) - Turn the knob anywhere between OFF position (left) and MAXIMUM position (right). This will control the amount of heating and the amount of cooling. |
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Fan Speed Switch (31B) - The fan speed switch controls the three-speed blower fan motor. |
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OFF - Move the switch to this position to stop the blower fan. |
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Heater - Move the switch to the right to operate the heating system. |
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Air Conditioner - Move the switch to the left to operate the air conditioning system. |
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LOW - Move the switch to this symbol for the lowest fan speed. |
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MEDIUM - Move the switch to this symbol for a medium fan speed. |
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HIGH - Move the switch to this symbol for the highest fan speed. |
Heating and Air Conditioning System Operation
The heating and air conditioning system can perform 3 functions:
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Heating - Turn switch (31B) to LOW, MEDIUM or HIGH speed. Adjust control (31A) for the desired temperature. |
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Air Conditioning - Activate the air conditioning system. Turn switch (31B) to LOW, MEDIUM or HIGH speed. Adjust control (31A) for the desired temperature. |
Defogging - Activate the air conditioning system. Turn switch (31B) for the air conditioner to LOW, MEDIUM, or HIGH speed. Use the fan speed that is needed to remove moisture from the air in the cab. This prevents moisture from forming on the windshield and the windows. Adjust control (31A) until the moisture level is lowered. Adjust control (31A) until the temperature of the cab is comfortable.
All Wheel Drive Control Dial (32)
All wheel drive mode switch (34) should be used along with all wheel drive control dial (32).
All Wheel Drive CREEP Position
When the all wheel drive is in the CREEP position, only the front wheels will pull the machine. Control dial will control the front wheel speed up to 8 km/h (5 mph). When control dial is placed in the CENTER position, front wheel speed is equal to
Minimum Speed - Turn the control dial counterclockwise to decrease the front wheel speed. Placing the speed control to the full counterclockwise position equals 0 ground speed.
Center (Detent) - Turn the control dial to the center (detent) position for a front wheel speed of
Maximum Speed - Turn the control dial clockwise to increase the front wheel speed. Placing the control dial to the full clockwise position is equal to
All Wheel Drive Manual Position
When the all wheel drive is in the MANUAL position, control dial will control front wheel speed as a percentage of rear wheel speed up to 120 percent. When control dial is placed in the CENTER position, front wheel speed is equal to the rear wheel speed. The response time will remain constant until control dial is turned to another position.
Negative Aggression - Placing the control dial in the full counterclockwise position commands front wheel speed to be 98 percent of rear wheel speed.
Center (Detent) - Placing control dial to the center (detent) position will match front wheel speed to rear wheel speed.
Positive Aggression - Placing the control dial in the full clockwise position commands front wheel speed to be 120 percent of rear wheel speed.
Note: The amount of speed that is commanded to the front wheels is affected by the traction that is available. The transmission gear is also used to limit aggression. The aggression will be limited to 100 percent in the gears above the fourth gear forward position and limited to 100 in the gears above the third gear reverse position.
Aftertreatment Regeneration Switch (33)
The default regeneration mode is automatic regeneration. In automatic mode the regeneration system will trigger regeneration when regeneration is appropriate.
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Manual Regeneration - Push in the top of the switch for 2 seconds to begin regeneration. The digital display area will display a message when the regeneration is active. |
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Auto Regeneration Disable - Push in the bottom of the switch for 2 seconds to disable regeneration. The digital display area will display a message when the disable regeneration is complete. Refer to Operation and Maintenance Manual, "Monitoring System" for the location of the display message. The auto regeneration disable switch may be used to disable the automatic mode. |
Note: To re-enable the regeneration, cycle the engine start switch or push and hold the top of switch for 3 seconds.
Note: You may return to normal operation at any point during regeneration.
All Wheel Drive Mode Switch (34)
Before moving all wheel drive mode switch to the creep position, the machine must meet the following conditions:
- The machine stopped at zero ground speed.
- The engine is running.
- The parking brake is disengaged.
- The transmission control switch is in the neutral position.
- The actual gear is in the neutral position.
Creep - Move the all wheel drive mode switch to the creep position. The rear transmission will be neutralized and independent control of the front wheel speeds will be allowed up to
Off - Move the all wheel drive mode switch to the off position. This will turn off the all wheel drive system. All power to the machine will be provided by the rear wheels. Before moving the all wheel drive mode switch to the manual position, the machine must meet the following conditions:
- The actual gear is anything, but the neutral position, the eighth gear forward position, or the sixth gear reverse position.
- The engine is running.
- The parking brake is disengaged.
- The machine is moving.
- The inching pedal is not fully depressed.
Manual - Move the all wheel drive mode switch to the manual position. This will automatically control front wheel speed as a percentage of rear wheel speed. In manual position, the all wheel drive symbol will only display when the machine is moving and the all wheel drive system engages. Refer to Operation and Maintenance Manual, "Monitoring System" for the location of the all wheel drive symbol.
Blade Cushion Control (35) (If Equipped)
The blade cushion control (if equipped) is located to the right of the operator on the transmission control console. The number of switches on your machine may vary. The blade cushion control (switch) will always occupy the position to the left of center.
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Blade Cushion Control - Move the switch to the top position to turn on the blade cushion. Move the switch to the bottom position to turn off the blade cushion. |
Snow Wing Light (36) (If Equipped)
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Snow Wing Light (36) (If Equipped) - Push in the top of switch (36) to turn on the snow wing lights. Push in the bottom of switch (36) to turn off the snow wing lights. |
If the machine is equipped with a radio that has Bluetooth available, it is possible to sync another Bluetooth device with the radio. A microphone for the Bluetooth is located to the left of the radio. Refer to Operation and Maintenance Manual, "Entertainment Radio" for how to details on detecting and setting up a Bluetooth device.
Defroster Fan Control (38, 39) (If Equipped)
The defroster fan controls are three-position switches.
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Front Defroster Fan (38) - Move switch (38) to the bottom position to operate the defroster at low fan speed. Push in the top of switch (38) to operate the defroster at high fan speed. The middle position of switch (38) is the OFF position. |
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Rear Defroster Fan (39) - Move switch (39) to the bottom position to operate the defroster at low fan speed. Push in the top of switch (39) to operate the defroster at high fan speed. The middle position of switch (39) is the OFF position. |
Window Wiper/Washer Switch (40, 41, 42) (If Equipped)
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Rear Window Wiper and Window Washer (40) - Turn knob (40) clockwise to turn on the window wiper. Turn knob (40) counterclockwise to turn off the window wiper. Depress knob (40) to activate the window washer. Spring force will return the knob when the knob is released. |
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Lower Front Window Wiper and Window Washer (41) - Turn knob (41) clockwise to activate the window wiper. Turn knob (41) counterclockwise to turn off the window wiper. Depress knob (41) to activate the window washer. Spring force will return the knob when the knob is released. |
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Front Window Wiper and Window Washer (42) - Turn knob (42) clockwise to turn on the window wiper. Turn knob (42) counterclockwise to turn off the window wiper. Depress knob (42) to activate the window washer. Spring force will return the knob when the knob is released. |
Heated Mirror Switch (43) (If Equipped)
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Heated Mirror Switch (43) (If Equipped) - Push in the top of switch (43) to turn on the heated mirrors. The heated mirrors will be operational when the key switch is in the ON position. Push in the bottom of switch (43) to turn off the heated mirrors. |
Cab Floodlight Switch (44) (If Equipped)
Push in the top of switch to turn on the front cab floodlights. Move the switch to the MIDDLE position to turn off the cab floodlights. Push in the bottom of the switch to turn on the front and the rear cab floodlights.
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Directional Signal Lights |
LEFT - Pull down on control (45) to activate the left turn signal. When control (45) is pushed down, an indicator light will illuminate on the front dash. The left turn signal will remain on until control (45) is manually returned to the OFF position.
OFF - Move control (45) to the MIDDLE position to deactivate the turn signal. The directional signal lights will remain off.
RIGHT - Push up on control (45) to activate the right turn signal. When control (45) is pushed up, an indicator light will illuminate on the front dash. The right turn signal will remain on until control (45) is manually returned to the OFF position.
Headlight Dimmer Switch (46) (If Equipped)
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Headlight Dimmer Switch (46) - Push switch (46) downward to change the headlight beams to the high beam. Push switch (46) upward to change the headlight beams to the low beam. |
Steering Wheel Tilt Control (47)
Push down on tilt control (47) to adjust the angle of the steering wheel. Move the steering wheel to the desired position. Release tilt control (47). The steering wheel will remain in the desired position.
Secondary Steering Test Switch (48)
The secondary steering test switch allows the operator to manually test the operation of the secondary steering system. Refer to "Operation and Maintenance Manual", "Secondary Steering - Test" for the proper procedure.
Steering Column Tilt Control (49)
Push down on steering column tilt control (lever) (49) to adjust the angle of the steering column. Pull the steering column toward you or push the steering column away from you. The steering column will remain in the desired position when you release lever (49).
Interior Dome Light (51) - Push in the rear half of switch (51) to turn on the interior dome light. Push in the front half of switch (51) to turn off the interior dome light.
Service Port (52) and Power Port 12V (53)
The 12V power receptacles and the Electronic Technician (ET) service port are on the front of the shift console to the right of the operator seat.
Electronic Technician Service Port (52)
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Electronic Technician (ET) - This service port allows service personnel to connect a laptop computer to the machine electronics using Cat Electronic Technician. This connection will allow service personnel to interrogate the machine systems and engine systems. |
Power Receptacle - The 12V power receptacles can be used for powering automotive electrical equipment or accessories.
Note: Do not use the power receptacles as a lighter for a cigarette.
Cat® Grade Control Cross Slope Favorites (If Equipped)
Cross slope favorites allows quick access to stored cross slope targets. To store a favorite, first reach your desired target number, then press and hold the cross slope favorites button for two seconds. "Target" will be highlighted on your display to show that the favorite has been stored successfully. Nine favorites may be stored at any give time. If, after you have saved nine favorites you desire to save another favorite, you can override one of your saved favorites to do so. Scroll through to a saved cross slope favorites, simply press and hold the cross slope favorites button for two seconds to override the previously stored favorite.
The Stable Blade feature automatically reduces engine speed at the onset of bounce. To enable Stable Blade, access the Stable Blade option from the Settings menu within the display and enable Stable Blade. Minimum engine speed to enable Stable Blade is 1100 rpm. Autoshift must be disabled and set the throttle hold mode switch must be set to AUTOMATIC or MANUAL. Stable Blade is available in gears 1F-5F and 1R-6R. You may also set the sensitivity of Stable Blade via the display through the Settings menu using the left and right arrow keys. Default sensitivity is set to 50%. The increase of sensitivity results in faster response to bounce and response to smaller bounce. The decrease in sensitivity results in slower response to bounce and less response to smaller bounce.