Hydraulic drives are standard equipment on the 1910 air cart starting in model year 2014. They offer consistent drive power to the meters through all meter speeds. They offer many features, including variable-rate drive and hydraulic calibration as standard equipment.
The drive system reduces a large number of mechanical and electrical components including transmissions, clutches, chain drives, sprockets, gears, and shafts; replacing them with a hydraulic-drive motor, electrohydraulic valve, and a chain drive connecting the motor and meter.
Each meter has its own hydraulic drive motor and can be set independently of each other. It is recommended to use power beyond if available or another SCV, if power beyond is not available. The meter rotation is steady and smooth, minimizing pulsing effect. Drives are infinitely adjustable within range. The motor speed is controlled by an electrohydraulic valve mounted on the motor.
The operator has the ability to shut off all or any one or two of the given meters from the display at any given time. The operator has the ability to select from six different predetermined rates, or utilize variable rate for map-based prescriptions.
The system uses wheel speed from the cart to determine ground speed. If the cart wheel speed drops below 3.2 km/h (2 mph), the system will use tractor speed, if available, to maintain proper application rates when in turns or coming out of a headland turn.
Hydraulic drive motor
Hydraulic variable-rate drive is standard equipment for 1910 Carts starting in model year 2014. Meter speeds will change from the slowest to the fastest meter speed almost instantaneously. This will improve the accuracy of variable-rate prescription applications where changing rates quickly are important to the operator.
Meter drive system
Meter drive system with safety shield installed
Hydraulic calibration is standard equipment for the 1910 Cart. Hydraulic calibration makes it easy for the operator to rotate the cart meters to perform easy and accurate calibration with very little effort from the operator.
Similar to the previous hydraulic calibration kit, the operator can calibrate more than one meter at a time. The first part of the procedure prompts the operator to prime the meters by giving the meter rollers two full rotations. The next step prompts the operator to turn the meters until they stop. After completing this step, enter the weight of the product caught during the latter step into the selectable boxes to get the new MDV.
Calibration tools and equipment
Operator performing calibration
Operators can now perform meter verification without driving. In the meter verification page on the display, select the meter(s) to verify and the stationary checkbox. When the operator engages the calibration switch, the meter will turn the number of revolutions to meter out the amount of product for the area selected.
NOTE: It is highly recommended to have power beyond and load sense installed on the tractor hydraulic system to power the hydraulic drives. This feature will save fuel, as well as reduce hydraulic heat, while providing maximum performance by the tractor hydraulic system to the cart hydraulic drive motors. By having load sense, the tractor is only required to provide the pressure and flow that the drives require. Power beyond and load sense capability have been tested and approved for all 8x00, 9x00, and newer John Deere tractors. Older John Deere tractors and competitive make tractors have not been tested for functionality. If power beyond is not available, an additional SCV will be needed to power hydraulic drives. See link for more information on power beyond kits.
NOTE: Hydraulic drives cannot be retrofitted onto mechanical drive carts.
NOTE: For high application rates, it is recommended to utilize tractors with the hi-flow hydraulic pump option. See 1910 Commodity Cart tractor compatibility and requirements for more information.