Product Code:SAE J909 Title:Three-Point Hitch, Implement Quick-Attaching Coupler, Agricultural Tractors (Cancelled Jul 1996, Superseded by ASAE S278.6) Issuing Committee:Agricultural Tractor Standards Committee (Atsc) Scope: This SAE Standard sets forth the requirements for the attachment of three-point hitch implements or equipment to the rear of agricultural wheeled tractors equipped with quick-attaching couplers. It is intended to establish those dimensions which are necessary to assure adequate clearance between components and to assure proper functioning of the tractor-implement combination when the implement is attached to the tractor by means of quick-attaching coupler. Design of the latching mechanism and individual components of the coupler not restricted by this document are left to the discretion of the manufacturer.