SAE Standards Works
Truck and Bus Brake Actuator Committee
J1469 - Air Brake Actuator Test Procedure, Truck-Tractor, Bus, and Trailers
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Air Brake Actuator Test Procedure, Truck-Tractor, Bus, and Trailers
This SAE Recommended Practice provides procedures and methods for testing service, spring applied parking, and combination brake actuators with respect to durability, function, and environmental performance. A minimum of five test units designated A, B, C, D, and E are to be used to perform all tests per 1.1 and 1.2. 1.1 Test Procedures Leak rate-parking and service chambers (Section 4) Chamber volume-parking and service chambers (Section 5) Maximum release and hold-off pressure-parking chamber (Section 6) Minimum Pressure Response-Service Chambers (Section 7) Force output and stroke-parking chamber (Section 8) Force output and stroke-service chamber (Section 9) Low temperature leakage-parking and service chambers (Section 10) Low temperature maximum release and hold-off pressure (Section 11) Low temperature force output-parking chamber (Section 12) Low temperature operational test-service chamber (Section 13)