Hydraulic drives
Starting in model year 2014, Hydraulic drives are standard equipment on the 1910 air carts; offering consistent drive power to the meters. Hydraulic drives comes standard with variable-rate drive and hydraulic calibration.
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 or another SCV, if power beyond is not available. Hydraulically powered meters minimize the pulsing effect found in chain driven systems. The motor speed is controlled by an electrohydraulic valve mounted on the motor.
Operators can shut off any meter from the in-cab display. The cart software comes with six pre-loaded rates for seeding. Map based prescriptions can be used with variable rates.
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 turning or coming out of a headland turn.
Hydraulic drive motor
Variable rate
Starting in model year 2014, hydraulic variable-rate drive is standard equipment for 1910 air carts. Quick changing rates are important for maintaining accuracy with variable rate prescription applications.
Meter drive system
Meter drive system with safety shield installed
Hydraulic calibration
Hydraulic calibration makes it convenient to rotate the cart meters to perform accurate calibration.
More than one meter can be calibrated at a time. Following the below instructions for 1910 air carts:
- Weigh bag, tare scale
- Add bag to bottom of meter
- Rotate the meters twice to charge them with product
- Turn the meters until they stop
- Weigh the bag with product inside
- Enter the weight of the product on the in-cab display
Calibration tools and equipment
Operator performing calibration
Meter verification
Operators can now perform meter verification without driving. In the meter verification page on the in-cab 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 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.