49 C.F.R. § 215.113
Defective plain bearing wedge
A railroad may not place or continue in service a car, if a plain bearing wedge on that car is—
(a) Missing;
(b) Cracked;
(c) Broken; or
(d) Not located in its design position.
A railroad may not place or continue in service a car, if a plain bearing wedge on that car is—
(a) Missing;
(b) Cracked;
(c) Broken; or
(d) Not located in its design position.