Dewa Hadi Prasetyo and Febi Rahmadianto 2025. Optimizing Preventive Maintenance to Reduce Downtime On CAT KT4 Axle Loader Components in The Mining Industry. International Journal of Industrial Innovation and Mechanical Engineering. 2, 4 (Nov. 2025), 09–14. DOI:https://doi.org/10.61132/ijiime.v2i1.148.