---
kind: "section"
citation: "49 C.F.R. § 213.139"
title: "49"
number: "213.139"
heading: "Spring rail frogs."
url: "https://uscodex.org/cfr/49/213.139"
---

# §213.139. Spring rail frogs.

- (a) The outer edge of a wheel tread shall not contact the gage side of a spring wing rail.
- (b) The toe of each wing rail shall be solidly tamped and fully and tightly bolted.
- (c) Each frog with a bolt hole defect or head-web separation shall be replaced.
- (d) Each spring shall have compression sufficient to hold the wing rail against the point rail.
- (e) The clearance between the holddown housing and the horn shall not be more than one-fourth of an inch.

## Notes

### Authority

Authority: 49 U.S.C. 20102-20114 and 20142; 28 U.S.C. 2461 note; and 49 CFR 1.89.

### Source

Source: 63 FR 34029, June 22, 1998, unless otherwise noted.