Adjusting Knife Arm

1. Remove round-head bolt from knotter bracket and rotate knotter assembly to vertical position.

2. Wiper plate (A) must be centered with heel of billhook. Loosen cap screws (C) and move arm until distance (B) from billhook tongue groove is within specification. Tighten adjusting cap screws enough to hold wiper plate for next adjustment.

Specification

Wiper Plate-to-Billhook Tongue Groove Clearance -Distance (Approximate) 7.9 mm (5/16 in.)

E48990


A-Wiper Plate
B-Distance
C-Cap Screw (2 used)

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3. Rotate knotter assembly down slightly while pulling across billhook.

To move wiper plate (A) across jaw of billhook (B), pull applied should be within specification.

Specification

Wiper Plate -Force 22-67 N (5-15 lb force)

4. Tighten cap screws (C) to specification.

Specification

Adjusting Cap Screws -Torque 8-12 N·m (71-106 lb-in.)

E18488


A-Wiper Plate
B-Billhook
C-Cap Screw (2 used)

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IMPORTANT: Hold arm close to billhook and adjust as close as possible without touching.

5. Raise knotter to rotate billhook 180 degrees and move tongue by hand, up and down, to check clearance at closest point between tongue and plate. As billhook passes wiper arm, clearance (B) between tongue (A) and wiper plate must be as specified.

Specification

Billhook Tongue-to-Wiper Plate -Clearance 2.4 mm (3/32 in.)

NOTE: Adjust knife arm to wipe past billhook as far as possible.

6. Adjust wiper arm by adding washers (C) to increase clearance. Remove or replace existing washer with a thin washer to decrease clearance.


A-Billhook Tongue
B-Clearance
C-Washers

E35917
E35584

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7. Install as many shims (A) as possible, and one 21/32 x 15/16 x 0.036 in. washer (B) on shaft of knife arm to remove end play. Fasten with 1/8 x 1 in. cotter pin (C).


A-Shim (as required)
B-Washer
C-Cotter Pin, 1/8 x 1 in.

E35585

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8. As billhook is revolved through its 360 degree cycle, lower surface of billhook (A) must clear knife (wiper) arm (B) as specified.

Specification

Billhook-to-Knife Arm Minimum -Clearance (C) 1.5 mm (1/16 in.)


A-Billhook
B-Knife (Wiper) Arm
C-Clearance

E28843

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9. Check wiper arm for well rounded and smooth surfaces at ALL portions that contact twine or knots (particularly in throat area (A) and hole (B) to prevent twine fracture.) Remove all rough edges with fine emery cloth.


A-Throat Areas
B-Hole

E22712

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10. Recheck wiping force by rotating knotter assembly down slightly while pulling across billhook. To move wiper plate (A) across jaw of billhook (B), pull applied should be within specification.

Specification

Wiper Plate -Force 22-67 N (5-15 lb force)

11. Tighten cap screws (C) to specification.

Specification

Cap Screws -Torque  8-12 N·m (71-106 lb-in.)


A-Wiper Plate
B-Billhook
C-Cap Screw (2 used)

E18488

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