Loading And Unloading A Dump Trailer 2) Engage the latch and secure with spring pin. Always secure lock pin prior 90 to operating. 3) Let ramp down for loading. *WARNING – STAND CLEAR DURING OPERATION* NEVER stand behind the rear of fenders. Keep 8 ft. clearance to rear and direct sides of gate. 18.104.22.168 Spreader Gate Operation 1) Disengage bottom latch and secure with spring pin. Always secure lock pin prior to operating. 2) Raise gate for spreading. When gate operation is complete, selector valve switch must be placed back in dump bed position.
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