Analysis of Maintenance for The Model 317 Tray Unloader Using The Preventive Maintenance Method at PT. Madukoro Engineering. Technema: Journal of Intelligent Engineering and Computing, [S. l.], v. 1, n. 2, p. 335–341, 2026. Disponível em: https://sovereignresearch.org/technema/article/view/267. Acesso em: 3 sep. 2026.