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Toyota Production System Case

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The problem that Doug faces is specifically in the area of the rear seat assembly. This area has been the problem for the last 6 months. From October through January there seemed to be a large number of missing or broken parts. We think this was likely related to poor design and process steps. We recommend to work actively with quality control with KFS and to discover the reason for the differences between the first and second shift. KFS should focus on incoming inspection. It is unclear if the material flaws are related to the manufacturing process at KFS, the transport or the transfer process into the TMS line. This can easily be examined using Jidoka. Additional focus needs to be placed on ensuring that the number of seat options is not contributing to the number of missing parts and that the JIT information exchange is correct. Again, a Jidoka process would uncover quickly the issue and likely result in recommendations to alleviate this problem. A short term solution might including placing additional Vendor Managed Inventory “golden” seats on-site at the TMS facility to replace defective parts to ensure that there are fewer parts taken off line. There must also be a close examination of the two TMS areas. The first take would be to explore the reason for the difference in defect rates between the shifts. If there is a training problem, this should be addressed immediately. Additional emphasis needs to be focused on the reason for the delays in obtaining replacement parts from KFS once the source of the problem is identified in the Clinic or Overflow area.
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The Toyota Production System principle is based on the assumption that true need will deviate from production planning and that problems will crop up. The Toyota Production System relies on two practices to address problems and drive additional quality and productivity: Jidoka and Kaizen. Jidoka was

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