Replacing hydraulic oil in case 580 k backhoe

hello everyone. I recently purchased a used case 580k backhoe. One bucket cylinder is bent and leaks a good stream of hydraulic oil. I got a new cylinder to replace the one with bent piston rod. Anyway, I bought the backhoe in the middle of winter. The guy I bought it from said there was just a couple of slightly leaking cylinders but now that the weather has warmed up I notice it is more than just a couple that have leaks. I started running low on hydraulic oil so I contacted the seller and...

Replacing hydraulic oil in case 580 k backhoe

Replacing hydraulic oil in case 580 k backhoe