c. A railcar shall be repaired before placing or continuing in service if the couplers have
any of the following defects:
(1) The distance between the guard arm and the knuckle in the pull position exceeds 5
5/16 inches for type E and E/F couplers. See Figure A-25 for an illustration of an E type coupler
gauge and how to use it.
(2) The distance between the front face and the knuckle in the pull position exceeds 3
13/16 inches for type F couplers. See Figure A-26 for an illustration of an F type coupler gauge
and how to use it.
(3) A coupler part(s) of any type found which is broken, cracked, bent, or missing.
Figure A-25. Example of a type E coupler gauge.
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