Inspect and Adjust Opener Blades

1. Support machine safely. (See procedure at the beginning of this section.

causym CAUTION: Disk blades are sharp. Wear protective gloves and handle disks carefully.

2. Inspect blade edge contact point as follows:

a. Insert two small business cards (A) between blade opening and gently slide cards together until blade contact point is reached.

b. Measure blade contact area (B) and compare to specification.

Specification

Blade Edge Contact Area -Distance 31-51 mm (1.25-2.0 in.)

c. If distance is not as specified, proceed as follows:

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A-Business Cards
B-Contact Area

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3. Remove dust cap (A), nut (B), and blade (C) from spindle.

4. Measure blade diameter and compare to specification. Replace blades, if diameter is below specification, beveled edge is worn off, or damage is apparent.

Specification

Fertilizer Blade-Minimum -Diameter 317 mm (12.5 in.)

5. If blade replacement is required, see REPLACE DISK FERTILIZER OPENER BEARING in this section.

6. Remove shim washers (D) to increase disk contact area, or add shim washers to decrease disk contact area.

causym CAUTION: Disk blades are sharp. Wear protective gloves and handle disks carefully.

7. Install blade in reverse order and tighten nut (B) to specification.

Specification

Blade Retaining Nut -Torque 122 N·m (90 lb-ft)

8. Check blade contact area.

9. Repeat procedure until blade contact area is as specified.

10. Remove support components.

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A-Dust Cap
B-Nut
C-Blade
D-Shim Washers

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