my dump is a galion and the fill plug is at the same location as yours. first get something strong to prop yor box up with. i use 8"x8"x6' timbers and prop them under one of the channels on both sides! now you can do it two ways one, the quick and dirty method or the clean timely way. the quick and dirty is with box up remove plug from cyclinder housing, fill with hoist oil until it comes out of plug hole. slowly lower box completely (excess oil will be pushed out) raise box all the way up and put fill plug back in, drop box and clean up mess later because it will run off for days.
the clean and timely method is to do the same above and add a little oil at a time to fill it up without making a mess. either way once when it is filled make note of where the level is in the cyclinder so that the next time oil is needed you know when to stop filling with out making a mess.
