Business organizations today are working hard to achieve competitive superiority over others through rapid access to local and international markets. What helps organizations do this is balancing assembly lines because of their effective role in reducing the time required to produce the product. From this standpoint, the main goal of this the study is to choose the optimal balancing for the production assembly lines at the Volvo Trucks factory in the Iraqi city of Babylon. To achieve this goal, data and information were collected from the factory records and analyzed using some heuristic algorithms (on-site weights, Comsoal, Moody and Yang). In light of the results of the analysis, it was found that the idle time decreased from 15 hours to less than 3 hours, and the number of stations has also decreased from 15 to 10 stations, and the efficiency rate has become 91% instead of 60%, which is the current efficiency rate of the factory, and other results. Thus, the problem of the study will be addressed and its importance will be taken advantage of, as was done. The study concluded with a set of conclusions and proposals related to the assembly process in the factory.