Replacing Drill Shaft Cotter Shear Pins

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

NOTE: Replace the cotter shear pins only with cotter shear pins of the same size. Do not replace with other type pins.

The cotter shear pins (A) will shear when an excessive load is put on the shaft.

Infrequent or improper lubrication causes "binding" of moving parts within the machine. The "binding" will cause the cotter shear pins to shear, thus preventing breakage of machine parts.

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

A-Shear Pins

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