This thread is on a roached out 1641 I picked up last year. Not that yours is this condition but you can see some of the areas that can be problematic. tractor are pretty much the same except for the engines and yours has power steering. If you would like a copy of the service manual send me a PM with your e-mail address. Congrats on the 1864, great tractor.
http://www.onlycubcadets.net/forum/s...ad.php?t=26834