So I took my N6b caboose apart to install Kadee couplers, while I was in there I decided to lower it as it rides too high. When I was done drilling out the top hats for the truck mounts, I noticed a small compression spring on the bench with a very small U shaped casting in the end. Can anybody help me figure out where this came from ???? Is it part of the Operating Signalman linkage. Tried going to MTH web site and parts locator, and then the document site... all to no avail. Here's photo of the spring.
Obviously to get the trucks out of the frame everything had to be taken off the plastic frame, PC board, operating mechanism, arm which moves the Signalman/Brakeman.