Servicing Closing Wheel Arm

1. 
   N78813-UN-07FEB08

   Front Closing Wheel

   
   N78811-UN-13NOV07

   Rear Closing Wheel

   
   N79962-UN-07FEB08

   
   N79963-UN-07FEB08

   A - Lock Nut

   B - Closing Wheel

   C - Pin

   D - Pivot Pin

   E - Washer

   F - Bushings

   G - Direction

   Remove pivot arm.

   1. Remove front and rear closing wheels (B).

   2. Pivot rear of arm down.

   3. Note location of washer (E).

   4. Drive pin (C) out.

   5. Remove pivot pin (D).

   6. Inspect components for damage and replace as necessary.

   7. IMPORTANT: Install washer (E) on same side of arm as noted when removed.

      Assemble in reverse order with direction (G) arrow facing front.

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2. 
   N90939-UN-04JAN11

   
   N80061-UN-12FEB08

   
   N79965-UN-12FEB08

   
   N79966-UN-12FEB08

   A - Disk

   B - Gauge Wheel

   C - Lever

   D - Cap Screw

   E - Cap Screw

   F - Pin

   G - Spacer

   H - Seals

   I - Bushings

   Remove closing arm.

   1. CAUTION: Disks are sharp. Use caution and wear protective clothing to avoid injury.

      Remove disk (A) and gauge wheel (B).

   2. Place tension lever (C) in top position (lowest pressure).

   3. Remove cap screw (D), washers, nut, and springs.

   4. Remove cap screw (E), washers, and nut.

   5. Drive pin (F) out and remove lever assembly.

   6. Remove spacer (G).

   7. Inspect arm, spacer (G), seals (H), and bushings (I) for damage. Replace as necessary.

   8. Assemble in reverse order and tighten cap screws to specification.

      Item	Measurement	Specification
      Closing Arm Cap Screw	Torque	237 N·m (175 lb.-ft.)
      Disk Cap Screws	Torque	73 N·m (54 lb.-ft.)
      Gauge Wheel Cap Screw	Torque	217 N•m (160 lb.-ft.)
      Closing Wheel Lock Nut	Torque	217 N·m (160 lb.-ft.)

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