New Video: Tatra PCC Controller Overhaul and much more. Leipzig Germany 1991. 21 minutes.
  Richard Youl

If you have ever wondered what the Westinghouse style PCC controller is made up of, and how the pieces work together, this should explain it all.

Additionally there are scenes of the bogies and other parts.

You will also see a most brutal scrapping of a Tatra PCC trailer car as well as renewing one of those flexible Point blades, apparently the norm in 1991 in East Germany, a much more recent addition in Melbourne.