Looks like the same swing mechanism design as the backhoe on my b8200. Mine is not leaking but i have some ‘rubber bumpers’ to install on it. From looking at it i believe you just need to unbolt either the cylinder base end or the outrigger arm itself to uncover a large bolt between the two which is threaded into each end of the swing cylinder’s rod. Once you remove both those bolts and the hydraulic lines and chains i believe it would simply angle out one side between the backhoe boom and the outrigger.
This is just what i think from looking at it. So far i havent done it and have just avoided banging the hoe all the way to either side until i get around to installing those bumpers. Theyve been riding around on the bottom of my control sticks for at least 8months..