Replacing Shear Protection Pins 24 Row

IMPORTANT: Replace all shear protection pins annually.

IMPORTANT: Replace shear pins ONLY with shear pin of the same size and type. Do not replace with other size or type of pin. Replacement countershaft shear pins (B) are located on the seed transmission frame.

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

Shear protection pins (A) can become deformed through normal use. It is possible for the pins to fail without a machine malfunction.

The shear pins (A), which connect counter shafts and transmission, shear when an excessive load is put on drillshafts. Meter handles shear when an excessive load occurs in meter.

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 drives, jammed or misaligned seed meters.

If either the left-hand and right-hand drive 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 shear pin.

Replacement cotter pins (B) and meter handle (C) are located on mechanical transmission or on left-hand variable rate drive motor.

A-Shear Pins
B-Replacement Countershaft Pins
C-Replacement Pro Meter Handle

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If meter handle breaks; remove broken pieces, align flat surfaces (A) and insert new handle (B) through gearbox (C) until handle snaps into groove on shaft. Gearbox must seat into cutout (D).

A-Flat Surfaces, Aligned
B-New Handle
C-Gearbox
D-Cutout

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