Gene H posted:Go to a flea market dollar up store or maybe your local hardware and buy a box of assorted O rings. The small ones work great. Just carefully slip it over the coupler down to the shaft and your all set. A pair of small spreaders work to stretch it over the coupler. Also the electromagnetic uncoupler will still open the coupler. I believe Harbor Freight also has them.
Once again that will not work on this truck. it is not like your Lionel couplers. There is no bar/tab for it to hold the coupler shut on the outside, it's all on the inside.