Question about lowering my camper manually.
 

I've recently had a friend of mine give me a 28FL for free. The thing is obviously going to need some electrical work done to it. My question right now is how do I lower the top manually? I cant get any power at all to anything other than the outlets. It appears to be resting on the safety right now due to it being a couple inches or so lower that it appears it should be. I've tried pumping the hydraulic pump and it pumps pretty easy only using my hand and not having a bar in it. When pumping it nothing happens. I was planning on adding some fluid to it tomorrow and trying it again. Once I get it off the safety I was planning on lowering it down so I can pull it in my garage door and then lift it back up to work on it this winter. I'm worried about it dropping really fast like a floor jack with weight on it. Will it come down slowly? I'm guessing the release is on the side of the hydraulic reservoir and is the thing I saw that is shaped like a T so one can get a grip on it. Any help would be appreciated. Thank you very much. I'm sure I'll have many more questions as the project rolls along.

https://drive.google.com/open?id=0Bw...UF3TmZWdFNjSHM

https://drive.google.com/open?id=0Bw...lM2eE5OUV92Nnc

https://drive.google.com/open?id=0Bw...0JEMXE1TVpxNUU