[Code of Federal Regulations]

[Title 49, Volume 5]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR393.45]



[Page 399-400]

 

                        TITLE 49--TRANSPORTATION

 

                      DEPARTMENT OF TRANSPORTATION

 

PART 393_PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION--Table of 

Contents

 

                            Subpart C_Brakes

 

Sec. 393.45  Brake tubing and hoses; hose assemblies and end fittings.



    (a) General construction requirements for tubing and hoses, 

assemblies, and end fittings. All brake tubing and hoses, brake hose 

assemblies, and brake hose end fittings must meet the applicable 

requirements of FMVSS No. 106 (49 CFR 571.106).

    (b) Brake tubing and hose installation. Brake tubing and hose must--

    (1) Be long and flexible enough to accommodate without damage all 

normal motions of the parts to which it is attached;

    (2) Be secured against chaffing, kinking, or other mechanical 

damage; and

    (3) Be installed in a manner that prevents it from contacting the 

vehicle's exhaust system or any other source of high temperatures.

    (c) Nonmetallic brake tubing. Coiled nonmetallic brake tubing may be 

used for connections between towed and towing motor vehicles or between 

the frame of a towed vehicle and the unsprung subframe of an adjustable 

axle of the motor vehicle if--

    (1) The coiled tubing has a straight segment (pigtail) at each end 

that is at least 51 mm (2 inches) in length and is encased in a spring 

guard or similar device which prevents the tubing from kinking at the 

fitting at which it is attached to the vehicle; and

    (2) The spring guard or similar device has at least 51 mm (2 inches) 

of closed coils or similar surface at its interface with the fitting and 

extends at least 38



[[Page 400]]



mm (1\1/2\ inches) into the coiled segment of the tubing from its 

straight segment.

    (d) Brake tubing and hose connections. All connections for air, 

vacuum, or hydraulic braking systems shall be installed so as to ensure 

an attachment free of leaks, constrictions or other conditions which 

would adversely affect the performance of the brake system.



[70 FR 48050, Aug. 15, 2005]