I just happened upon this information, Union Pacific will be restoring locomotive #4014, a 4-8-8-4 that's been on static display in Pomona since the early '60s. I wonder if JR East's restoration activities are known at UP. Apparently this has been fairly well cared for, including greasing of various bearings throughout the drive system.
Wikipedia: http://en.wikipedia.org/wiki/Union_Pacific_4014
YT playlist: