Today's lesson

Find some short lengths of 2x4 and 4x4. They come in handy for several things. In this case you could have dumped the bags and placed the wood on the frame rails, then air back up and crank the landing gear down.

 

Had aluminm Petroleum trailers with light weight 'legs' with cross pins and evenly spaced holes at the first carrier I worked for.

A small block of 2x4 or 4x4 on the low side placed on the 5th wheel would lift it level enough to add a block under the leg dropped low. Sometimes a longer section over the frame rail was needed to gain height first.

Every guy had a milk crate of wood so they could get back under a trailer when you had spring tractor suspension. The wood could wege in and add 'some' lift. Sometimes need multiple sessions of ram it in and crank it up to get it done.