TAILGATE. 17.1. Tailgate and tailgate hardware shall be designed so that when the gate is in the horizontal position it is level with the body floor. Hardware shall be designed and positioned so that the gate side- shift in the open position will not allow a pin to drop out of the latching mechanism. The pins for securing the top of the gate shall be machined for ease of installation/removal and the hinge shall have grease fittings and shall be lubed before delivery. 17.2. The tailgate shall be removable and have grade 70 spreader chains (3/8” minimum, larger if necessary to safely support the tailgate). The chain shall be removable and partially enclosed by a 3’ long section of plastic “mesh type” chain guard. The chain shall be of sufficient length so that there will be at least six extra links when the gate is in the horizontal position. Hooks shall be provided on the inner edge of the intermediate tailgate posts to store the chain while it is installed. The manufacturer’s standard spreader chain eye/hook shall be provided on the body corner posts. 17.3. The tailgate shall have a fully adjustable gate lock control linkage. A double-acting air cylinder mounted in the center of the frame rails shall operate the gate. The cylinder shall be mounted on an adjustable yoke so that the piston rod is fully retracted when the over center latching system is in the lock (closed) position. The air system will be provided by the truck contractor with sufficient hose to reach the cylinders, and an in-dash switch to operate the gate. 17.4. A 6” wide (horizontal width), and 15-degree minimum pitch body apron and mounting hardware shall be installed. The apron shall be bolted on with a minimum of (6) grade 8 bolts and shall be adequately sized. 17.5. Provide for one coal door in the center panel of the tailgate. The PO will indicate the number of trucks requiring a coal door. The handle for opening and closing the door shall be designed so that the end can be gripped by the operator’s full hand when wearing gloves and be opened from the LH (drivers) side of the tailgate to provide the driver visual contact of the person operating the coal door. Provide coal door plug if required.
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Sources: Standard Contract, Contract Amendment