Replacing Intermediate Disk Drivers

1. Remove disk. (See REMOVING DISKS in this section.)

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

3. If splines have been sheared, remove loose pieces of splines.


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

E47726

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

4. Clean the following areas before installing disk driver:

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


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

E51570

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


A-Timing Marks
B-Driver

E41455

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

IMPORTANT: To avoid machine damage, use new special cap screw (A) treated with thread-locking compound. Replace cap screw anytime disk driver is replaced.

Replace 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.

7. Lubricate special cap screw (A) with a light oil.

8. Install and tighten to specification.

Specification

Disk Driver-to-Pinion Gear Cap Screw -Torque 339-366 N·m (250-270 lb-ft)

9. Install disk. (See INSTALLING AND SYNCHRONIZING DISKS in this section.)

E51714


A-Special Cap Screw
B-Special Washer
C-Disk Driver
D-Timing Mark

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