The document summarizes research on improving productivity for an engine crankshaft machining line using Toyota Production System (TPS) techniques and simulation. It analyzes the existing line configuration using time study, standard work combination tables, and Arena simulation. This identifies idle time and imbalance. A proposed configuration with 6 operators is developed using line balancing calculations. Simulation shows the proposed configuration maintains output while reducing man-hours by 14.3% and improving productivity by 16.6%, saving an estimated $312,000 annually in labor costs.