Purpose: The research focuses on the development and numerical validation of a spatial model for the spring suspension in the TEM2 shunting locomotive, utilising the Universal Mechanism software environment. As the rolling stock operated beyond its standard service lifespan experiences wear and tear, the necessity for precise engineering methodologies to evaluate dynamic loads becomes increasingly critical. Methods: The study includes a simulation of the interaction between the bogie and the locomotive body while traversing artificially created track irregularities, as well as a comparative analysis with experimental data. Results: The results reveal that the assessment of dynamic parameters, including end spring deformations, vertical dynamics coefficients and frame forces, has demonstrated deviations not exceeding 15%, thus affirming the model’s validity. It is noteworthy that the most accurate correlations have been recorded in the speed range of 60–80 km/h. Practical significance: The results can be used as a basis for further calculation of the residual service life, and for refining methods for assessing dynamic characteristics.