ohno implemented the concept of JIT in Toyota's manufacturing operations during the early 1970s. The JIT system comprised a set of activities aimed at increasing production volume through the optimum use of inventories of raw materials, work-in-process. and finished goods. The objective of the JIT system was to avoid waste, reduce t inventories,and increase production efficiency. It was based on the principle of producing only the required products in specific quantities at a given point in time thereby eliminating waste of all kinds and reducing cost. JIT was based on the pull system of manufacturing wherein products were manufactured on demand as against the commonly used push system 25 where each process manufactured components based on capacity regardless of the demand. The push system often created excess inventory and blocked the t production line.