This paper presents an advantageous and newfangled approach where the combination of Design for Manufacture and Assembly concepts and product architecture principles, are complemented with CAE tools, in order to reduce the manufacturing costs, time to market and improve the design deliverables quality of a mechanical system.The proposed contributions were validated applying them on a rice husker design.Some novelty concepts as hot/warm/cold swapping were taken from electronics field to the mechanical system design obtaining advantages in the overall product lifecycle.