“ANALISIS KERUSAKAN BOLT TANDEM MAIN PUMP PADA UNIT EXCAVATOR HITACHI EX 2500”, REMIT, vol. 1, no. 1, pp. 17–23, Feb. 2020, Accessed: Jun. 04, 2026. [Online]. Available: https://jurnal.ftm.uniba-bpn.ac.id/index.php/REMIT/article/view/11