Just a word of caution...I called my local NH dealer for a part for my TC24DA. It took us a few minutes and a fax of the parts drawing to get the correct part.
Of course, I made a comment about it being so hard to find part numbers for anything NH and was told it's because they change often. He said that he deals with people all the time that have the parts book, order a part, and when it arrives, it's wrong because the parts list has changed.
I think it's silly, but that's what he said.