OMAR178078: 8120, 8220, 8320, 8420, and 8520 Tractors , Block File: OURX935_000009B_19

Quick coupler is convertible to Category 3 or Category 3N. Use Category 3 whenever possible, especially for heavy loads.

Use following procedure to convert quick-coupler:

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1. Install spacer (A) on outside of draft link for Category 3N.

2. Adjust bumper block (B) to minimize clearance.

3. Tighten nut securely.

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4. Support center of quick coupler. Remove pin retaining bolts (A) and pins from draft link. Remove side member cap screws (B).

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5. Switch ends with quick coupler side members (A) (left member to right end and right to left). Tighten cap screws to 320 +/- 64 N·m (236.02 ft-lb).

6. Disconnect handles by removing C-clip and pin (A).

7. Remove cap screws (B) from wear plate and turn so that tab is inward. Reinstall cap screws and tighten them securely.

8. install pin and C-clip.

A-Pin and Clip
B-Cap Screw

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