Hitch Conversion — Category 4/4N Convertible Quick Coupler

Quick coupler is convertible to Category 4 or Category 4N. Use Category 4 whenever possible, especially for heavy loads. Greater width gives more strength.

Your John Deere™ Dealer can supply parts to adapt Category 4/4N quick coupler to Category 3 implements.

Use following procedure to convert quick coupler:

1. Use proper lifting device when converting coupler. Failure to do so can result in personal injury.

   Support center of quick coupler.

2. 
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   Remove pin retaining bolts (D) and pins from draft link.

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3. Remove side member cap screws (B).

4. Switch ends with quick coupler side members (C) (left-hand member to right-hand end and right-hand member to left-hand end). Tighten cap screws to 425 N·m (315 lb·ft).

5. Lower coupler hook must be kept under pressure before removing roll pin, to hold lock rod in place.

   
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   Flip latch handle around by removing roll pin (E).

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6. Turn coupler latch handle (A) inward and reinstall roll pin (E).

7. Flip handle down in lock position.

8. 
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   Draft Link Bumper

   Loosen draft link bumper retaining cap screw (A).

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9. Position thick ends (B) forward on draft links for Category 4 or thin ends back for Category 4N.

   Adjust bumper by sliding on draft link on cap screw to desired clearance position.

10. Tighten cap to 230 N·m (170 lb·ft).

11. Perform same steps on opposite side for equal clearance between sway blocks and bumpers.

12. Cycle hitch to ensure that there is no hitch interference.