Replacing Disk Driver

1. Remove disk. (See "Removing Disks" in this section.)

2. Remove center cap screw (A), special washer (B) and disk driver (C).

3. If spline has been sheared, remove loose pieces of spline.


A-Cap Screw
B-Special Washer
C-Disk Driver

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IMPORTANT: It is critical that mating surfaces of the bearing, driver, yoke, and hardened washer be free of dirt and crop before installing cap screw. If these areas are not thoroughly cleaned, the cap screw can come loose and cause cutterbar failure.

4. Clean the following areas when replacing disk driver:

  • Special washer (A).
  • Top of driver (area B).
  • Bottom of driver (B).
  • Top of bearing (C).


A-Special Washer
B-Driver
C-Top of Bearing

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5. Align timing marks (B) and install new driver (A) on pinion shaft.


A-Driver
B-Timing Marks

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6. Align timing mark on special washer (B) with mark on driver (C). Install washer.

IMPORTANT: To avoid machine damage, use new center cap screw treated with thread-locking compound.

Lubricate cap screw with light oil before installation. Failure to lubricate could allow cap screw to come loose and cause machine damage.

7. Lubricate cap screw (A) with a light oil. Install and tighten to specifications.

Specification

Disk Driver Cap Screw -Torque 340 N·m (250 lb-ft)

8. Install disk in original position. (See "Installing and Synchronizing Disks" in this section.)

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A-Cap Screw
B-Special Washer
C-Driver

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