Replacing Cutterbar Knife

1. Open left-hand shield (see Opening Right and Left-Hand Shields in this section).

2. Pull up on tensioner arm sheave handle (A) and remove knife drive belt (B).


A-Tensioner Arm Sheave Handle
B-Knife Drive Belt

H75362

Rigid platform shown

JK22594,0000088 -19-18AUG06-1/7

3. RIGID PLATFORMS: Remove nuts (A) and shield (B).

causym CAUTION: Avoid injury. Cutterbar and knives will move whenever the knife drive is rotated. Keep hands, feet and clothing away from cutterbar when servicing.

4. ALL PLATFORMS: Manually rotate knife head until cap screws (C) are accessible.

5. Remove cap screws (C) to disconnect knife from drive.

causym CAUTION: To reduce risk of personal injury, always wear gloves when handling knives, and stand to the rear when removing or installing knife.

6. Pull knife through guards until bearing assembly is separated from knife drive.

H68598


A-Nuts (2 used)
B-Shield
C-Cap Screws (2 used)

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7. Remove knife head bearing cap screw (A).

8. Spread knife head (B) slightly using self-locking pliers (C) and remove bearing assembly (D).

IMPORTANT: Spanner ring (E) maintains a smooth drive operation and proper knife head alignment. Replace spanner ring any time a major component failure has occurred in knife head or knife drive gearbox area, or any time the system has been previously operated with improper knife head alignment.

9. Install bearing assembly into new knife head, remove self-locking pliers and finger tighten cap screw (A).


A-Cap Screw
B-Knife Head
C-Self-Locking Pliers
D-Bearing Assembly
E-Spanner Ring

H68599
H69792
H75342

JK22594,0000088 -19-18AUG06-3/7

causym CAUTION: Reduce risk of personal injury, always wear gloves when handling knives and stand to the rear when removing or installing knife.

IMPORTANT: Failure to fully tighten cap screws (A and B) will result in knife and drive damage.

10. Push knife back into guards until bearing contacts drive. Verify drive is positioned to accept bearing, lightly tap components together. Tighten cap screws (A and B) to specification.

Specification

Knife Head Drive Cap Screws -Torque 130 N·m (96 lb-ft)

H68602


A-Cap Screws
B-Cap Screw

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IMPORTANT: Proper adjustment of cutterbar head is critical. If cutterbar head is not set correctly, binding and gear box failure may occur.

11. Verify knife head (A) does not contact bearing shield (B), see Aligning Knife in this section.


A-Knife Head
B-Bearing Shield

H68606

JK22594,0000088 -19-18AUG06-5/7

12. RIGID PLATFORMS: Install shield (B) and tighten round head bolts and flange nuts (A).


A-Nuts
B-Shield

H68598

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13. Lift up on tensioner arm sheave handle (A) and install drive belt (B).

14. Close left-hand end shield.


A-Tensioner Arm Sheave Handle
B-Belt

H75362

Rigid platform shown

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