49 C.F.R. § 229.61 — Draft system.
§ 229.61 Draft system. (a) A coupler may not have any of the following conditions: (1) A distance between the guard arm and the knuckle nose of more than 5 5/16 inches on D&E couplers. (2) A crack or break in the side wall or pin bearing bosses outside of the shaded areas shown in Figure 1 or in the pulling face of the knuckle. ER09AP12.000 (3) A coupler assembly without anti-creep protection. (4) Free slack in the coupler or drawbar not absorbed by friction devices or draft gears that exceeds one-half inches. (5) A broken or cracked coupler carrier. (6) A broken or cracked yoke. (7) A broken draft gear. (b) A device shall be provided under the lower end of all drawbar pins and articulated connection pins to prevent the pin from falling out of place in case of breakage. [77 FR 21346, Apr. 9, 2012] Suspension System