本SAE推荐实施规程提供了有关耐久性、功能和环境性能的维修、弹簧停车和组合制动执行器测试程序和方法。根据1.1和1.2，至少使用六个指定为A、B、C、D、E和F的测试单元来执行所有测试。

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.