Replace Seed Opener Blades and Seed Tube Guard

NOTE: Left-hand side shown. Right-hand side similar.

1. Remove cap screw (A), pivot shaft (B) and gauge wheel from row unit.


A-Cap Screw
B-Pivot Shaft

A53246

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2. Planting unit equipped with rotary or rigid scraper-Pull front engagement pin (A) outward, disengage scraper assembly (B) from shank panels.

3. Remove hub cap (C).


A-Engagement Pin
B-Scraper
C-Hub Cap

A51073

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causym CAUTION: Disk blades are sharp. Wear protective gloves and handle disks carefully to avoid being injured.

NOTE: Make sure that spacer washers on the inside of disk hub don't get lost.

4. Remove cap screw (A) and disk (B) as an assembly.


A-Cap Screw
B-Disk

A53575

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NOTE: Replace seed tube guard if excessively worn.

5. Replace seed-tube guard by rotating clockwise and sliding forward.

IMPORTANT: To properly install blade assembly, add or remove hardened washers behind blade bearing to obtain 38 mm to 64 mm (1.5 in. to 2.5 in.) of blade edge contact at leading edge when cap screw is tightened. Washers not placed behind blade should be placed on front side of bearing. Inserting two pieces of paper between disks on each side of contact points on leading edge will help verify this dimension.

6. Inspect and replace seed opener disk as necessary.

7. Install in reverse order using the following instructions:

  • Install cap screw and tighten to specification.

Specification

Blade Assembly Cap Screw -Torque 122 N·m (90 lb-ft)
  • Adjust gauge wheels. (See ADJUST GAUGE WHEELS in this group.)
  • Tighten pivot shaft cap screw to specification.

Specification

Gauge Wheel Pivot Arm Cap Screw -Torque 271 N·m (200 lb-ft)
A53576


A-Seed-Tube Guard
B-Seed-Tube

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