215.123—Defective couplers.
A railroad may not place or continue in service a car, if—
(a)
The car is equipped with a coupler shank that is bent out of alignment to the extent that the coupler will not couple automatically with the adjacent car;
(b)
The car has a coupler that has a crack in the highly stressed junction area of the shank and head as shown in the figure below (see figure 2).
(c)
The car has a coupler knuckle that is broken or cracked on the inside pulling face of the knuckle.
Code of Federal Regulations
Code of Federal Regulations
189
(2)
The coupler assembly does not have anticreep protection to prevent unintentional unlocking of the coupler lock; or