Stop in for a cup of coffee

71340Duster said
The lift is hydraulic and I believe the primary safeties are mechanical, they latch into the "windows" in the ladders as the lift goes up. When I lower it, if I don't hit the air button to disengage the secondary air locks the lift settles on the primary's (that's where it is now). In order to lower it at this point it has to be raised off of the primary safeties, that's why I'm thinking it might be okay to not have the air on, but not sure.

i gotcha now. Our safeties are pure mechanical, no air but function the same way. and I've left a 8600 lb Ram 3500 Cummins up on them for nearly a month and they held fine. just make sure they're engaged. If you're nervous, you can always get the jackstands for lifts that are designed as an added safety. They run about 200 a piece.