Identification and optimization of production processes on 200 TS A6 engine using lean manufacturing approach at PT Trimitra Marganda Unggul Tegal

PT. Trimitra Marganda Unggul (TMU) is a manufacturing company that focuses on producing underbody components for motorcycles and cars. One of the key performance indicators utilized is Gross Stroke per Hour (GSPH), which serves as a reference for production targets and evaluations of machine productivity. This study aims to identify the factors impeding the achievement of the production target or GSPH for the 200 TS A6 machine, while also providing recommendations for improvement to enhance productivity using a Lean Manufacturing approach. From October to December 2024, the average GSPH recorded on the 200 TS A6 engine was 265 strokes/hour, which is below the company's standard of 320 strokes/hour. The analysis using Process Activity Mapping (PAM) indicates the presence of significant non-value-added (NVA) activities leading to inefficiencies in the production process. The proposed improvement recommendations are estimated to yield a 69% increase in GSPH compared to previous records.