Replacing Cotter Shear Pins

Replacing Countershaft Cotter Pins

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), which connect the countershaft to the countershaft sprocket, will shear when an excessive load is put on the countershaft.

Cotter shear pins may also become deformed through normal usage after extended use. In this condition, it is possible for the cotter pin to eventually fail without a machine malfunction.

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

Check transmission for binding or loose chains that may have become tangled.

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

If shaft binds due to misalignment, loosen bolts on shaft bearings. Make certain shaft turns freely, then tighten bolts.

A30941


A-Shear Pins

OUO1074,0000181 -19-22MAR01-1/2

Replacing Drill Shaft Cotter Pins

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), which connect drill shaft to the transmission, will shear when an excessive load is put on the drill shaft.

Cotter shear pins may also become deformed through normal usage after extended use. In this condition, it is possible for the cotter pin to eventually fail without a machine malfunction.

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

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

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

A30940


A-Shear Pins

OUO1074,0000181 -19-22MAR01-2/2