“Pengaruh Kerusakan Precleaner Terhadap Sistem Pelumasan Pada Excavator Cat Type 349 PT. Trakindo Utama”. Jurnal Teknik AMATA 2, no. 2 (December 20, 2021): 22–29. Accessed February 2, 2026. https://jurnalpoltekam.or.id/index.php/Amata_amamapare/article/view/65.