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SAE J294

2004 Edition, June 2015

Complete Document

SERVICE BRAKE STRUCTURAL INTEGRITY TEST PROCEDURE - VEHICLES OVER 4500 KG (10 000 LB) GVWR

Includes all amendments and changes through Reaffirmation Notice , June 2015


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Product Details:

  • Revision: 2004 Edition, June 2015
  • Published Date: June 2015
  • Status: Active, Most Current
  • Document Language:
  • Published By: SAE International (SAE)
  • Page Count: 7
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This SAE Recommended Practice establishes a method of testing the structural integrity of the brake system of all new trucks, buses, and combination vehicles designed for roadway use and falling in the following classifications:

a. Truck and Bus—Over 4500 kg (10 000 lb) GVWR

b. Combination vehicle—Towing vehicle over 4500 kg (10 000 lb) GVWR

The test consists of two distinct tests: a Structural Endurance Test followed by a Structural Ultimate Strength Test.

NOTE—These two tests originated from separate procedures, and were combined in this Recommended Practice. Each test can be considered to be an independent evaluation of the service brake's structure. Based on time available, cost limitations, and the desired evaluation and historical data available, either of these tests could be considered as a complete evaluation of the brake's structure.

Purpose

The main purpose of the document is to evaluate the structural integrity of a vehicle's braking system. However, other areas such as the steering or suspension system may also be evaluated during the test provided that the criteria and procedure detailed as follows are not modified in any way. For repeatability, it is recommended that a brake apply device be utilized whenever possible, since it would eliminate the variations in application times and efforts of different operators.
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