Product Metering

Product metering starts at the right-hand end of the segment shaft where the drive chain (A), from the independent meter clutch, is attached to the shaft drive sprocket.

Agitator drive arm (B) is also attached here, to the outside of the sprocket.


A-Drive Chain
B-Agitator Drive Arm

A48921

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At the bottom of the tank, above the meter inlet, is the product agitator shaft (A). This shaft moves with the meter and keeps product free-flowing by breaking up clumps.

For even metering run-to-run, in-tank product level should be kept above 6 in. minimum. When product level falls below 15 cm (6 in.), pressure disturbances inside the tank adversely affect product delivery to the meter inlets. Do not run tank completely empty; refill when product level indicator first shows empty condition.

On occasion, it may be advisable to run the tank completely empty and check for foreign objects (rocks, twigs, sticks, straw, etc.) that may block the meter inlet openings.

A41532B


A-Agitator Shaft

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The meter cartridge assembly (A) is made up of eight product handling segments and enclosures that keep the product separated and isolated to it's own run. When the number of active primary runs is less than the full eight segments available, enclosure doors (B) are installed to block product entry into the meter. These doors snap into place in the product entry openings of the enclosures. Product doors are provided loose with the air package to customize cartridge to agree with number of primary air runs.

Brushes inside the enclosures prevent product blow-by, allowing air to pass around the meter and equalize pressure while holding back product.

A41533A


A-Meter Cartridge Assembly
B-Enclosure Doors

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NOTE: Field peas and chick peas may jam between the meter housing and the fine tuning rings, making the meter very hard to turn. Remove the fine tuning rings and recalibrate if this happens to your machine. If any fine tuning rings and removed, the rate charts in the owner's manual, and the standard calibration values will no longer apply.

NOTE: The Very High Rate Meter may deliver enough seed to overload the seed tubes. Use the application rate (lb/min) calculation function of the GREENSTAR ® display to make sure that your operating conditions do not exceed 30 lb/min.

Four types of fluted meter segments are available to handle different products and/or product delivery needs and application rates. The segments are color-coded for easy identification.

· Yellow (A)-Low Rates and granular products: Applying low-rate products like flax, canola, alfalfa.

· Black (B)-Regular Rates: For seeds up to 6 mm (0.25 in.) diameter. Most commonly used roller; for wheat, barley, and small soybeans.

· Green (C)-High-Volume Rates: Applying high-rate products such as fertilizer and soybeans larger than 6 mm (0.25 in.) diameter.

· Blue (D)-Very High Rates: Applying very high rates of products such as fertilizer up to 260 lb/ac and metering very large seeds.

A49163


A-Low Rate Meter Segment
B-Regular Rate Meter Segment
C-High Rate Meter Segment
D-Very High Rate Meter Segment

GREENSTAR is a trademark of Deere & Company

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Each meter segment is designed to handle enough product for a 12-port secondary header.

Through the use of fine tuning rings (A), each meter segment is customized to proportionately reduce product delivery to agree with the number of secondary ports to which it is supplying product.

Less product is needed at an eight-port header than at a twelve-port header.

Each tuning ring effectively reduces the segment's product carrying area by one-twelfth. A segment feeding an eight-port header should have four rings installed, while a segment feeding a twelve-port header should have no rings installed.

Tuning rings are provided with each meter cartridge. An installation tool, A61656 (PVC driver), is provided with the cart.

A41535


A-Fine Tuning Rings

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Half-width disconnect handles (A) are used to block product delivery to half of the meter cartridge inlets for seeding point rows.

Product disconnects also make it possible to remove the meter cartridge without emptying the tank.

When both handles are up, product passages to the meter are blocked and the meter can be removed. This disconnect position is also used when emptying the tank. When meter passages are blocked, cleanout passages are open, allowing product to reach the cleanout ports at the front of the meter housing.

A48922

Product Passages Blocked


A-Half-Width Disconnect Handles

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At the left-hand end of the meter is the meter-speed sensor (A). Sensor sends a signal to the cart's electronic controller where it is used by the microprocessor to calculate and display application rate on the tractor-mounted console.


A-Meter-Speed Sensor

A49062

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