Replacing Right-Hand End Converging Disk Driver

1. Raise curtain to access disk drivers (see "Raising Curtains" in "Operating the Mower-Conditioner" section).

2. Remove shield (A).

3. Put a wood block between two disks.

4. Remove cap screws (C), converging drum (B) and disk (D).

CC1023871


A-Shield
B-Drum
C-Cap Screw
D-Disk

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5. Remove cap screw (A) and special washer (B).

6. Remove disk driver (C).

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


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

E52475

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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.

8. Clean the following areas when replacing disk driver (other than left-hand end):

  • Special washer (A).
  • Top of driver (B) where disk seats.
  • Bottom of driver (C).
  • Top of bearing (D).


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

E44404

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


A-Timing Marks
B-Driver

E44179

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10. Align timing mark on special washer (A) with mark on driver (C). Install washer.

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

Replace the special hardened cap screw with genuine John Deere part specified for this application.

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

11. 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)

E52475


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

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12. Place disk (D) on driver in original position. (See "Installing and Synchronizing Disks" in this section.)

IMPORTANT: Disk-to-driver cap screws are treated with thread-locking compound and can be used up to five times. Replace with the John Deere cap screw specified for this application.

13. Place converging drum (B) on disk, align mounting holes and install four locking cap screws (C). Tighten cap screws to specifications.

Specification

Disk-to-Driver Cap Screws -Torque 150 N·m (110 lb-ft)
Replace locking cap screws after removing and installing five times.

CC1023871


A-Shield
B-Drum
C-Cap Screw
D-Disk

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14. Install upper shield (E). Make sure that the clearance (D) between shield and top of converging drum is within specification.

Specification

Shield-to-Converging Drum (D)- -Clearance 5 mm (0.197 in.)

15. Remove wood block.

16. Rotate disks by hand until highest point is in line with stripper plate (A). Make sure that clearance (B) and clearance between crop accelerators and bottom of stripper (F) are within specification.

Specification

Stripper-to-Converging Drum (B)- -Clearance 2-5 mm (0.079-0.315 in.)

Specification

Stripper-to-Accelerator (F)- -Clearance 5-8 mm (0.197-0.315 in.)

17. Rotate disks several times by hand to check synchronization. Make sure that there is no interference between knives.

18. Lower curtains.

E53701


A-Stripper Plate
B-Clearance
C-Converging Drum
D-Clearance
E-Upper Shield
F-Clearance

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