AutoPowr operation

Reverse Drive Lever

To drive the tractor, move the lever to Forward (B) or Reverse (D). If the lever is moved from Forward or Reverse back to the center park position (F), the tractor will continue to roll and the transmission goes to its "Power Zero" mode. Ten seconds after the tractor stops rolling, the park lock will automatically engage. If the lever is moved from Forward or Reverse directly to the corner park position (E), the tractor will brake to a stop using the transmission. The park lock will then engage. On bumpy terrain, remember to actuate the brake pedals as well.

If the lever is moved from Forward or Reverse to the "Power Zero" position (C), the tractor will continue to roll but it will not be braked by the transmission. When the tractor is stationary, powerflow remains at the transmission. To obtain "Power Zero", you must hold the lever firmly in this position. If the lever is released from the "Power Zero" position, it will automatically go to the center park position (F).

When the tractor is stopped, move the lever back to the corner park position. If you move it to neutral (A), the direction clutches are opened and there will be no powerflow in the transmission. The tractor may roll away.

LX1024385


A-Neutral position
B-Forward position
C-"Power Zero" position
D-Reverse position
E-Corner park position
F-Center park position

OU12401,00005EB -19-01AUG01-1/12

Speed Control Lever

Travel speed is regulated using the speed control lever. Two speed ranges are available.

Speed range 1 allows a maximum forward speed of 20 km/h (12.4 mph). Speed range 2 allows a forward travel speed to be set equal to the maximum tractor speed (40 km/h or 50 km/h; 25 mph or 31 mph). The maximum speed in range 1 is always the minimum speed in range 2. In other words, there is no change in speed when ranges are changed.

The maximum speed in a speed range is adjusted using speed wheel (B). For this, the engine must be running and the reverse drive lever must be in one of the following positions:

  • Neutral position "N":

    The digital display alternates between the forward and reverse speed ranges. The speed setting can be changed in both ranges, in other words the ratio between forward and reverse speed can be changed .

    In range 1, reverse speeds can be set to a maximum of 30% higher and 70% lower than forward speeds. In range 2, the possible forward-to-reverse speed ratios are 1:1 up to 22 km/h (14 mph). After that, they increase to 50:30 or 40:30.

  • Center park position:

    The digital display alternates between the forward and reverse speed ranges. Depending on what is currently displayed, you can change either the forward speed or the reverse speed. In this case, the set forward-to-reverse speed ratio remains in force.

  • Position for forward or reverse travel:

    The digital display shows the relevant speed range. Forward and reverse speeds can be changed. In this case, the set forward-to-reverse speed ratio remains in force.

LX1024386
LX1019767


A-Speed control lever
B-Speed wheel (for setting maximum speed)
1-Speed range 1
2-Speed range 2
C-Display of maximum speed setting

OU12401,00005EB -19-01AUG01-2/12

The maximum speed setting of a range is reached with the engine at full throttle and the speed control lever at the end of its travel in the speed range. If the accelerator pedal is not at the end of its travel, the tractor will move at a corresponding speed (not proportional). If the speed control lever is not at the end of its travel in a speed range, the tractor will similarly operate at a corresponding speed as indicated by the red needle (C).

Speed wheel (B) does not have a stop and can be "infinitely" adjusted. It makes a change in relation to the previous setting. If the maximum speed setting is changed with wheel (B) while the tractor is moving, the change is always based on the last setting. Turning the wheel will directly increase or decrease the last maximum speed setting.

Creeper Mode

If a forward travel speed below 2 km/h (1.24 mph) is used in speed range 1, the tractor will automatically shift to creeper mode. The possible minimum travel speed is 0.05 km/h (0.03 mph).

In speed range 2, the maximum speed is 2.5 times greater than in range 1. In both speed ranges, the maximum speed in creeper mode is 2.5 times greater than the minimum speed. For example, if a maximum speed of 0.50 km/h (0.33 mph) is set in range 1, the minimum speed is 0.20 km/h (0.12 mph).

At speeds below 0.6 km/h (0.37 mph), changing engine speed does not have any effect on travel speed.

The following occurs if the speed-adjusting wheel is used to increase travel speed while the tractor is in motion in range 2 with creeper mode selected:

  • If the speed selected is below 10 km/h (6.2 mph), the transmission remains in creeper mode. This means the originally set values will apply on changing back to range 1. Speed range 1 will flash on the digital display.
  • Creeper mode also remains in effect on returning to range 1 if the 10 km/h (6.2 mph) speed is temporarily exceeded and then reduced to under 10 km/h (6.2 mph).

OU12401,00005EB -19-01AUG01-3/12

  • Creeper mode will be exited if the 10 km/h (6.2 mph) speed is exceeded and range 1 is re-engaged. Forward speed range 1 will be automatically adjusted (to 2 km/h; 1.24 mph).

OU12401,00005EB -19-01AUG01-4/12

    AutoPowr Selector

    AutoPowr selector (A) controls the extent to which the transmission is controlled automatically.

    In position 0 (manual), the only automatic intervention is to prevent stalling. In position 1, transmission control is minimally influenced by the electronic system. In position 5, transmission control is most influenced by the electronic system. The extent of transmission automation progressively increases in positions 1 to 3, between 3 and 5 there is additional automation of engine control.

    Engine load control is set in positions 1 to 3. In positions from greater than 3 to 5 (Eco mode), the engine turns only as fast as needed. This results in fuel savings and noise reduction. If the operator sets a specific engine speed in eco mode and the electronic control system recognizes that this speed is not necessary, engine speed will be automatically reduced to a level adequate for tractor operation. Travel speed remains constant, however. Eco mode is not suited for lifting operations (where engine speed determines hydraulic pump output) and PTO operation (where engine speed directly determines PTO speed).

    In eco mode, you can override the set engine speed by operating the accelerator pedal hand throttle at the same time.

    Position 0 Manual control of transmission Position 1 Approx. 30% engine load control before transmission intervenes, i.e. the transmission ratio changes. Position 2 Approx. 18% engine load control before transmission intervenes. Position 3 Approx. 5% engine load control before transmission intervenes. Position greater than 3 Approx. 12% engine load control before transmission intervenes. Engine speed can be reduced electronically by 200 rpm in the partial load range. Position 4 Approx. 12% engine load control before transmission intervenes. Engine speed can be reduced electronically by 650 rpm (6620 tractors) or 550 rpm (6820/6920 tractors) in the partial load range.
    LX1024387


    A-AutoPowr selector

OU12401,00005EB -19-01AUG01-5/12

      Position 5 Approx. 12% engine load control before transmission intervenes. Engine speed can be reduced electronically to a speed not lower than 1200 rpm in the partial load range.

OU12401,00005EB -19-01AUG01-6/12

        The following list shows which automation settings are suitable for various types of tasks.

        Range A PTO operation Range B Towing operations with hydraulic power requirements Range C Any towing operation (field or road) without any hydraulic power requirement (since hydraulic power is not sufficient at an engine speed of 1200 rpm) Range D PTO operation, with precise PTO speeds (for example, when using a manure spreader) Range E Operation of balers Range F Tillage Range G Operation of mowers Range H Other operations requiring hydraulic power (e.g. use of front loaders)

         

        The following may be regarded as basic settings:

        Position 1-2 Work in which the engine's flywheel mass (PTO operation) and vehicle inertia (earth-moving) are adequate to meet transient peaks in the power requirements (caused by the implement or task in hand). Position 2,5 Operations where engine speed is important. Position 5 Operations where engine speed is irrelevant.
    LX1026125

OU12401,00005EB -19-01AUG01-7/12

    Summary of different types of work
    Process Position of AutoPowr selector Comments
    Crop protection, liquid fertilizer 1 At this setting, the transmission behaves like a conventional tractor with stepped gears. As engine speed drops due to increased load, travel speed also falls away. The simultaneous reduction in PTO speed causes the output of pesticide to be brought down in step with travel speed. Adjust and operate pesticide equipment in accordance with the manufacturer's guidelines and the instructions provided by the pesticide/fertilizer producer. The less the engine is subjected to load control (e.g. 5 %), the greater the danger of excessive amounts of pesticide being metered as a result of the stepless change in the transmission ratio as load increases while engine and PTO speeds remain constant. The user must be aware of these relationships. The user may select other settings between 1 and 3, but he must take into account the technical aspects of the pesticide machine (metering, electronic regulation). The user must ensure that the pesticide is metered correctly.
    Fertilizing (spreader for mineral-based fertilizers; manure spreader, liquid fertilizer) 3 A constant width of spray can be achieved only if the PTO speed remains constant. If metering is not achieved on the basis of distance travelled, preselect a travel speed that can be sustained over the entire field. If the spreader functions independently of engine speed (e.g. a hydraulically-driven spreader), a different engine load control setting may be selected, provided the user makes sure that the material being sprayed is metered and distributed correctly.
    Balers (large, round and high-pressure) 2-3 Select travel speed and engine load control so that the engine can cope with differences in terrain and windrow width, and overcome brief load peaks with the help of rising engine torque and the inertia of the driveline. On the other hand, PTO speed must be kept high enough for the machine to work properly. The operator may vary travel speed infinitely at any time as he pleases, without changing the engine speed, and thus adapt his speed to the requirements.
    Mowers, mowers with conditioners, self-loading wagons 2-3 Same as for balers.
    Turning, making and spreading windrows 1-3 Select a setting appropriate to your requirements. Make sure that the work is done properly.
    PTO-driven tillage equipment (rotary harrow, rotary cultivator, tined rotor, also in combination with seed drills and spacing seeders) 2-3 Drive in a manner appropriate to the terrain, soil conditions and desired results. To achieve the desired crumb structure, there should not be too great an imbalance between PTO speed and travel speed.
    Mechanical drills (metered via a wheel on the ground, with no PTO-assisted tillage) greater than 3-5 Select a setting greater than 3 for economical driving.
    Pneumatic drills and spacing seeders (without tillage) 2-3 PTO speed must be sufficiently high for pneumatic distribution of the seeds.

     

    OU12401,00005EB -19-01AUG01-8/12

      Summary of different types of work
      Process Position of AutoPowr selector Comments
      Transport, driving on roads, towed tillage implements (plow, seedbed combination implements etc.) greater than 3-5 Select a setting greater than 3 for economical driving.
      Front loaders and hydraulically driven machines (silage cutters, feed mixers etc.) 2-4 Select any setting suitable for the work in hand (light or heavy loads on front loader). To achieve the desired machine speed, the hydraulic system must be able to provide sufficient oil.

       

      IMPORTANT: When applying pesticides and fertilizers, always comply with the guidelines provided by the machine manufacturer and the pesticide/fertilizer producers, and with the relevant legal requirements.

      OU12401,00005EB -19-01AUG01-9/12

                  Cruise Control

                  Maximum engine speed can be limited for PTO operation by means of cruise control (A). Move the hand throttle lever to full throttle, set the cruise control to position 1 - 3 as required, then reduce engine speed by turning cruise control (A).

                  In the lowest setting, engine speed is limited to 1100 rpm. In the highest setting, the engine can run at maximum speed. Individual engine speed limits can be set between these two positions.

                  If no PTO operation is taking place, cruise control (A) should be in the "Off" position.

                  Travel speed remains constant regardless of any engine speed limitation.

        LX1024388


        A-Cruise control

      OU12401,00005EB -19-01AUG01-10/12

                    Accelerator Pedal and Hand Throttle

                    The stronger signal is always used for transmission control.

                    If the accelerator pedal or hand throttle are moved to command a higher engine speed, engine speed increases. In Eco mode, once the set travel speed is reached, engine speed is reduced again (load controlled).

                    If the reverse drive lever is in Forward or Reverse, the tractor can be accelerated to the set speed using the accelerator pedal or hand throttle. The immediate travel speed is directly dependent on the setting of the accelerator pedal or hand throttle. Engine speed is only indirectly determined by the position of the accelerator pedal.

                    Thus when using the accelerator pedal or hand throttle, the values set with the AutoPowr selector and cruise control are always taken into consideration. Therefore, the value set using the cruise control cannot be exceeded even at full throttle. In Eco mode, the engine turns only as fast as needed, even if the operator applies full throttle.

        LX1024389


        A-Hand throttle

      OU12401,00005EB -19-01AUG01-11/12

                      Brake Pedals

                      If when driving the tractor both brake pedals are depressed, the tractor's speed will be reduced until it stops. Thanks to the automatic clutch function, there is no need to depress the clutch pedal when braking.

                      When the brakes are released again, the tractor automatically accelerates up to the speed currently commanded by the hand throttle or accelerator pedal.

                      The higher the engine speed, the greater is the force required at the brake pedals to stop the tractor.

                       

                       

                      Clutch Pedal

                      The clutch pedal normally does not need to be depressed to stop the tractor. If the clutch pedal is depressed, the corresponding clutch signal has priority over other commands.

        LX1024390


        A-Brake pedals

      OU12401,00005EB -19-01AUG01-12/12