Mine is a John Bean 12k, and also has the same locking mechanism. While I could raise a vehicle and stop between the locks without engaging them, I absolutely will not. No way, no how. It's just not worth risking my life or anyone ele's.
is it a 4 post or 2 post? if it s a 4 post just a heads up if its not completely square and perfectly level it WILL munch the nylon blocks used to guide the trolley. this happened to our john bean at work and it is not a fun game removing it.