Interesting, I havent followed the thread from the beginning in Oct, just picked up on it today. I purchased a NT 22 ton splitter back in Oct as well. I had troubles from the start. I bought the splitter and took it home to assemble. I had the splitter all assembled and noticed the hydro filter and housing unit were missing from the crate. I was kind of pi$$ed after spending my afternoon putting it together and was looking forward to playing with my new toy. I called NT, it was a Sunday, and they were closing in about a hour and told them the situation. They said come in and they will provide me with missing parts. It was then when I took the filler cap for the hydro tank off, by chance, and noticed some PAPER, inside of the tank!! WTF, I thought! I took a little "grabber" I have and reached down in the tank and pulled out a sheet of paper 3/4 the size of a normal piece of printer paper. It had all kinds of Chinese writing all over it, like some kind of Chinese newspaper or something. My first thought was what if I hadn't noticed the paper and filled er up with fluid and started the unit. It most likely would have plugged up something and fast. So I put the paper back in the tank and hauled the splitter back to NT. I told them I wanted another splitter because I wasnt sure if there was any more paper inside of the tank that couldnt be seen. Especially in a baffled tank. The guy questioned the Chinese paper in the tank, saying the units are made right here in good 'ol Minnesota. I said they may be assembled here, but the metric bolts say they are shipped in. So I pulled out my grabber and fished around the tank and pulled out some torn paper with the Chinese lingo. He changed his tune and gave me a different splitter.
I got that splitter home but it was too dark by than to use it. After work I the next day I tried it out. It worked at first, but after about 3 splits the ram was getting slower and the detent would't kick out. I could tell the lever wasnt moving forward enough, thus making the ram run slow. Also there was some kind of thick greyish oil coming from the control valve unit. The first thing that entered my mind was there was more of this Chinese paper in the hydro tank and it ran through and plugged the control lever unit. I called NT right away and said I wanted another new splitter. The guy on the phone said they would fix it. I said BS, if you dont get me a different splitter I will simply return it for a full refund and than go back on the floor and buy another one. And I told him he better give me a set of the 4-way wedges for all of my troubles. I took the splitter in the next day and picked up another one along with my free 4-ways. He said the paper in the tank of the first splitter was some kind of label thats on the tanks when they are shipped to the US.
The unit I have how works great, and I'm happy with it. But I just wonder if your unit had some paper in as well and may have have plugged something up as well. Kind of funny your control went out as well. Good luck