Replace 12 and 16 Row Shear Protection Pins

IMPORTANT: All shear protection pins should be replaced annually.

NOTE: If drill shaft binds due to misalignment, loosen bolts on planting unit drill shaft bearings. Make certain shaft turns freely, then tighten bolts.

The shear pins (A), which connect the counter shafts to the transmission, shear when excessive load is put on the drillshafts they drive.

Shear protection pins (A) can become deformed through normal usage after extended use. In this condition, it is possible for the pins to fail without machine malfunction.

Infrequent or improper lubrication causes "binding" of moving parts within the machine. This "binding" can cause the shear pins to shear, thus preventing breakage of machine parts. Other common causes of binding include compaction of field residue on row unit chains, jammed, or misaligned seed or chemical meters.

If either shear pin shears, turn the drill shaft by hand to locate where the "binding" is occurring. When the drill shaft can be turned freely by hand, replace the cotter shear pin.

A-Shear Pins

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IMPORTANT: Only replace shear pin with shear pin of the same size. Do not replace with other type pins. Replacement cotter shear pins (A) are located on the inside rear of seed transmission.

Replacement cotter pins (A) are located as shown.

A-Cotter Shear Pins

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