[Code of Federal Regulations]
[Title 49, Volume 4]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR393.46]

[Page 1067]
 
                        TITLE 49--TRANSPORTATION
 
        CHAPTER III--FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION,
                      DEPARTMENT OF TRANSPORTATION
 
PART 393--PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of Contents
 
                            Subpart C--Brakes
 
Sec. 393.46  Brake tubing and hose connections.

    All connections for air, vacuum, or hydraulic braking systems shall:
    (a) Be adequate in material and construction to insure proper 
continued functioning;
    (b) Be designed, constructed, and installed so as to insure, when 
properly connected, an attachment free of leaks, constrictions, or other 
defects;
    (c) Have suitable provision in every detachable connection to afford 
reasonable assurance against accidental disconnection;
    (d) Have the vacuum brake engine manifold connection at least three-
eighths inch in diameter.
    (e) If installed on a vehicle on or after January 1, 1981, meet 
requirements under applicable subsections of FMVSS 106 (49 CFR 571.106).
    (f) Splices in tubing if installed on a vehicle after March 7, 1989, 
must use fittings that meet the requirements of SAE Standard J512-OCT 80 
Automotive Tube Fittings or for air brake systems SAE J246--March 81 
Spherical and Flanged Sleeve (Compression) Tube Fittings as found in the 
SAE Handbook 1985 edition.

[33 FR 19735, Dec. 28, 1968, as amended at 44 FR 25457, May 1, 1979; 53 
FR 49400, Dec. 7, 1988]