I revived a montgomery wards 14 hydrostatic model # gil33048c. It has a leak where the hydraulic line connects to a fitting on the side of the ram. The ram doel not have enough power to lift the rototiller attachment, but it will hold it in the up position if you manually lift it. I cant figure out how to change the rear end fluid or what fluid is appropriate. It has a filter on the side so it should be serviceable. Any help is appreciated.