The rear trailing truck spring mount is a stiff beam structure that terminates the back equalization chain to the chassis. The back end of the springs mount in holes on the top. The top is heavily reinforced and bracked back to the side frames. One of the brackets provides a mounting hole for the spring saddle.
The rear trailing truck spring mount is shown in location on the back frame assembly at left. It is located just forward of the aft firebox mount.
The overall frame structure is shown at left with the back frame section shown attached and the trailing truck in its location.
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