Air Brake Actuator Test Procedure, Truck-Tractor, Bus, and Trailers
J1469
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 six test units designated A, B, C, D, E, and F are to be used to perform all tests per 1.1 and 1.2.
Rationale: This revision, based on feedback from document users, includes the following updates: Add 10 lbf/in^2 test pressure to the service force output section 7.3.2.10; Add an upper limit to the caging time allowed in sections 5.2.1.2 and 7.2.1.2; Change sections 13.1.2.1, 13.2.2.2, and 13.3.2.3 from a specified cycle rate to a minimum cycle count.
