This paper poses the application of a design methodology intended to improve a company's efficiency in maintenance processes in terms of time reduction.As the procedure involved altering the machine, the company needed to analyze several options due to the high investment required for all the possible modifications.For this reason, the company requested from the University a decision matrix.To accomplish this objective, a study to determine maintenance times was conducted and a critical stage during die dismantlement and assembly was identified.Based on this information, the decision matrix was elaborated.The best alternative was to replace mechanical guides for pneumatic guides.This option exceeded in 2% the second alternative and in 24% the last.The company succeeded in making a decision based on goal achievement and still today continues using decision matrixes for any adjustment in their processes.