Reducing Lead Time in the Wet Line of Automotive Parts Production

Adib Adib, Abdul Muzammil, Iing Pamungkas, Heri Tri Irawan, Gaustama Putra, Arrazy Elba Ridha


The goal is to identify the variables that contribute to the wet line's high lead time, including tray jams in and out of the oven dryers, operator work habits, wet line stagnation, and operator irregular jobs. Utilizing a fishbone diagram during the analyze process, the problem's root cause was discovered (Ishikawa diagram). The final step is to use 5W-1H to enhance step. Minimizing non-value-added activities and enhancing wet line throughput are the suggestions for reducing lead time. There are six recommendations: teaching the operator in the work process, creating work instructions for the wet line, changing the tray size, rearranging the quantity per tray, including the operator in the wet line, and changing the workspace. As a result of this development, the lead time of a wet line has increased significantly, from 3550 seconds to 411.63 seconds. The efficiency of the process cycle rises from 14.06% to 68%.


Fishbone Diagram; 5W-1H; Process Cycle Efficiency; Lead Time; Non-Value-Added Activity; Flow Process

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MIA, M. A. S., Nur-E-Alam, M. D., & UDDIN, M. K. Court shoe production line: improvement of process cycle efficiency by using lean tools. Revista de Pielărie Încălţăminte, (2017): 17, 3.

Jasti, N. V. K., Kota, S., & Sangwan, K. S. An application of value stream mapping in auto-ancillary industry: A case study. The TQM Journal, (2019): 32(1), 162-182.

Prasad, M. M., Dhiyaneswari, J. M., Jamaan, J. R., Mythreyan, S., & Sutharsan, S. M. A framework for lean manufacturing implementation in Indian textile industry. Materials today: proceedings, (2020): 33, 2986-2995.

Randhawa, J. S., & Ahuja, I. S. An investigation into manufacturing performance achievements accrued by Indian manufacturing organization through strategic 5S practices. International Journal of Productivity and Performance Management. (2018).

Lubis, D. A., Pamungkas, I., & Irawan, H. T. (2020, December). Lean Manufacturing Approach to Minimize Waste in The Process of Sorting Palm Oil Using the Value Stream Mapping Method. In IOP Conference Series: Materials Science and Engineering (Vol. 1003, No. 1, p. 012028). IOP Publishing.

George, M.O., The Lean Six Sigma Guide to Doing More With Less,. New Jersey: John Wiley and Sons, 2010.

Pamungkas, I., Irawan, H. T., & Arkanullah, L. Implementasi Statistical Process Control Untuk Pengendalian Kualitas Garam Tradisional Di Kabupaten Pidie. Jurnal Optimalisasi, (2020): 4(2), 108-118.

Akmal, A. K., Irawan, R., Hadi, K., Irawan, H. T., Pamungkas, I., & Kasmawati, K. (2021). Pengendalian Kualitas Produk Paving Block untuk Meminimalkan Cacat Menggunakan Six Sigma pada UD. Meurah Mulia. Jurnal Optimalisasi, 7(2), 236-248.

Gasperz, Vincent, Statistical process control Manajemen Bisnis Total,. Jakarta: PT. Gramedia Pustaka Utama, 1998.

Brue, Greg, Six Sigma for Managers,. Jakarta: Canary, 2002.

Pamungkas, I., & Iskandar, I. Defect Analysis for Quality Improvement in Fishing Boat Manufacturing Processes through the Integration of FMECA and Fishbone: A Case Study.



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