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The aim of project is to eliminate the change over time of Wheel Cylinder unit by redesigning the fixture for reducing the failures and retest that mostly gets rejected while conducting the four types of tests (Vacuum test, Stroke test, Bleed test, Air-leak test) on wheel cylinder. This redesigned fixture for conducting the Air leak test is done on the motive of replacing the usage of two different fixtures for testing two different Wheel cylinder models that does not need to be changed for the production of a particular model. So, the operator does not need to change the fixture every time when every different model comes for the production. By implementing this redesigned fixture, the failure parts or rejected jobs will decrease and also the retest percentage will also be considerably reduced. Redesigning of fixture is done by using mechanical means of Shigley’s design process initially and by the Quality control tools and techniques.