Mechanical Seed Drives

NOTE: For issues related to Variable Rate Drive, see the SEEDSTAR ™ Variable Rate Drive Operator's Manual.

Meters stop driving on one-half or the entire machine.

Binding in a section of the drives system can cause a shear pin to fail, thus, protecting the rest of the drive components.

Note: When turning the drive system by hand to check for binding, be sure to rotate all drill shafts in their normal direction of rotation. Also, it is often useful to compare the torque values required to drive given sections of the machine against similar sections on the opposite side of the machine.

Shear pins may also become deformed after extended use. In this condition, it is possible for the shear pin to eventually fail without a machine malfunction. For this reason, all shear pins should be replaced annually.

Look for source of binding, and make sure that drives can be turned by hand before replacing pin and resuming planting.

Common causes for binding include, but are not limited to, improper care and/or lubrication of drive components and meters.

For shear pin locations on this machine see REPLACING SHEAR PROTECTION PINS in Service-As Required section.

Half width disconnect failure due to overload.

Inspect half width clutch and repair as needed.

SEEDSTAR is a trademark of Deere & Company

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Meters stop driving on the entire machine or drive erratically.

Failed or worn sprockets, chains, or chain idlers within the transmission.

Examine chains, sprockets and idlers within the transmission and fix, align or replace as necessary.

Poor maintenance of row unit drives and meters.

Perform maintenance on seed meters and the components that drive them.

Improper contact drive tire adjustment.

Adjust contact drive tire to proper specification. See ADJUSTING CONTACT LINK in Operating Machine section.

Build-up of trash, mud and residue around transmission engagement tire.

Remove obstructions from around contact drive dire and proceed. If the machine is not equipped with mud scrapers on the chassis tire which drives the transmission tire, consider seeing your John Deere dealer about obtaining one.

Excessive downforce setting on row units.

Decrease row unit downforce.

Meters stop driving on a section of the machine or drive erratically.

Failed or worn sprockets, chains, chain idlers, or misaligned drive couplers.

Note: When drive couplers become excessively worn, the left-hand and right-hand couplers can be swapped to provide new wear surfaces.

Examine chains, sprockets, and idlers associated with failing section of the machine and fix, align, or replace as necessary. For proper drive coupler alignment, see ADJUSTING DRILLSHAFT COUPLERS AND FLEX SHAFTS in Operating the Machine section.

Failed or disconnected Pro-shaft.

Reconnect, or replace Pro-shaft as necessary.

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