I recently received one of these nicely detailed n scale steam locomotives in great shape except it does not run.  I would like to take it apart and clean it and check the motor connections but cannot find any documents online that show any details concerning this locomotive.  I expect it has been around for a while.  I know that the last time it ran was about 5 years ago.  Any help or advice would be greatly appreciated.  If I can't get it running it will make a nice static display on my layout.  thanks in advance.
Ed