SAE J1394-2000 pdf download Metric Nonmetallic Air Brake System Tubing
1. Scope—This SAE Standard covers the minimum requirements for metric sizes of nonmetallic tubing as manufactured for use in air brake systems. Nonreinforced products are designated type A and reinforced products type B. It is not intended to cover tubing for any portion of the system that operates below −40 °C (−40 °F), above +93 °C (+200 °F), above a maximum working gage pressure of 1 .0 MPa (1 50 psi), or in an area subject to attack by battery acid. This tubing is intended for use in the brake system for connections that maintain a basically fixed relationship between components during vehicle operation. Coiled tube assemblies required for those installations where flexing occurs are covered by this standard and SAE J1 1 31 to the extent of setting minimum requirements on the essentially straight tube and tube fitting connections, which are used in the construction of such assemblies.
2. References
2.1 Applicable Publications—The following publications form a part of the specification to the extent specified herein. Unless otherwise indicated, the latest revision of SAE publications shall apply.
2.1 .1 SAE P UBLICATIONS —Available from SAE, 400 Commonwealth Drive, Warrendale, PA 1 5096-0001 .
SAE J246—Spherical and Flanged Sleeve (Compression) Tube Fittings
SAE J844—Nonmetallic Air Brake System Tubing
SAE J1 1 31 —Performance Requirements for SAE J844 Nonmetallic Tubing and Fittings Assemblies Used in Automotive Air Brake Systems
SAE J1 1 49—Metallic Air Brake System Tubing and Pipe
2.1 .2 G OVERNMENT P UBLICATIONS —Available from the Superintendent of Documents, U. S. Government Printing Office, Mail Stop: SSOP, Washington, DC 20402-9320.
49 CFR 393.45—Brake Tubing and Hose, Adequacy
49 CFR 571 .1 06—Brake Hoses
2.1 .3 ASTM P UBLICATIONS —Available from ASTM, 1 00 Barr Harbor Drive, West Conshohocken, PA 1 9428-2959.
ASTM D 4329—Practice for Operating Light- and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of Plastics
ASTM G 53—Recommended Practice for Operating Light- and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of Nonmetallic Materials
3. Installation and Assembly Recommendations
3.1 End Fittings—End fittings are to be assembled to the tubing in accordance with the fitting manufacturer’s recommendations. The fitting may be of the design shown in the proposed metric version of SAE J246, or any other design suitable for use with metric size nonmetallic air brake tubing. Performance test requirements for nonmetallic air brake assemblies are covered in SAE J1 1 31 .
3.2 Noncoiled Tubing—Noncoiled tubing should not be used in flexing applications such as frame to axle.
3.3 Support and Routing—When installed in a vehicle, this tubing shall be routed and supported so as to:a. Eliminate chafing, abrasion, kinking, or other mechanical damage.
b. Minimize fatigue conditions.
c. Be protected against road hazards by installation in a protected location or by providing adequate shielding at vulnerable areas.
d. Not be exposed to temperatures, internal or external, over +93 °C (+200 °F) or below −40 °C (−40 °F).
e. Not be exposed to attack by battery acid.
f. Avoid excessive sag.
4. Identification—Air brake tubing shall be labeled in contrasting color with the legend repeated every 380 mm (1 5 in) or less along the entire length of tubing in legible block capital letters.
The following minimum information, in the order listed, is required. Additional information and/or another lay line may be added, if necessary.
a. Metric airbrake
b. SAE J1 394
c. Type A or B
d. Nominal tubing OD in mm—6, 8, 1 0, 1 2, or 1 6
e. Tubing manufacturer’s identification
5. Manufacture—The tubing shall be manufactured to comply with the requirements outlined in this document.
SAE J1394-2000 pdf download
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