You will be lucky if you didn't crack the cover, see the loose bolts on the cover? leave the seat on, gives the loader something to tie onto, and balance, the cover has to come straight up, the levers are something you don't want to break off, or you will have to fish broken peices out of the base. The piston, or cylinder or rings- whatever you find is broken, is for sale on this site. The reason it - something broke is the pressure...? regulator? valve? I hope someone reads this and helps with the right wording, but most likely that is a safety valve that didn't work. You got a manual?