Shackle Release Drop Tracks has automatic or controlled operation. The unit has four limit switches, one up, one down and two safeties. One limit switch is mounted on the machine and is closed when the ram is all the way up. The other three are mounted under the conveyor chain and are operated by chain fingers. The chain finger engages the down limit switch in automatic operation. The main drive is stop and start again when the problem is corrected. When manually operated, the three-position hand valve controls up and down positions of the drop track. It features include guide bars with bronze bushed guides, heavy steel frame, ready for connection to plant air supply.