Jackshaft Drive Coupler Adjustment

1. It may be necessary to align couplers (A). The FLAT surfaces (B) on the SIDES of the couplers should be touching and in alignment. To align the couplers, proceed as follows:

Add or remove flat washers (C) to align FLAT surfaces (B) laterally.

Loosen bolts (D) and align shafts (E).

After maximum alignment is obtained on surfaces (B) and shafts are in alignment, tighten bolts (D).


A-Coupler
B-Flat Surface of Coupler
C-Flat Washer
D-Bolts
E-Shafts

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2. Check condition of cotter shear pin. The cotter shear pin (A), which connects the clutch to the countershaft, will shear when excessive load is put on the jackshaft.

Cotter 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 planter malfunction. Improper drive chain alignment or infrequent or improper lubrication causes "binding" or moving parts within the planter. This "binding" will cause the cotter shear pins to shear, thus preventing breakage of parts.

If pin shears, locate the source of the "binding" and correct. Replace cotter pin.

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

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3. If additional adjustment is required, add or remove shims (F) at support.

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4. Completely UNFOLD and lower planter to the ground.

Jackshaft drive couplers MUST align. The FLAT surfaces (A) on the SIDES of the couplers should be touching and in alignment.

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