CFR /  Title 49  /  Part 215  /  Sec. 215.107 Defective plain bearing box: General.

A railroad may not place or continue in service a car, if the car has--

(a) A plain bearing box that does not contain visible free oil;

(b) A plain bearing box lid that is missing, broken, or open except to receive servicing; or

(c) A plain bearing box containing foreign matter, such as dirt, sand, or coal dust, that can reasonably be expected to--

(1) Damage the bearing; or

(2) Have a detrimental effect on the lubrication of the journal and the bearings.