The outstanding characteristic of conveyers in the process of main assembling is to make the process smooth and reinforced. And good management of that one depends much on how to keep its balance and rhythm. From this point of view, we should find out the factors which will disturb them. We have investigated, so far, our equipments, designs, processes and works to serve that purpose, but in this paper, we would like to try to consider, practically, how to bring about or realize the introduction of Tact System and Q. C.'s activity effectively.
