Saputra, Ilham, Agustion Jufri, Bukhari Bukhari, Nofriadi Nofriadi, and Yuli Yetri. “Troubleshooting Intake Exhaust System Pada Engine C6.4 Excavator Caterpillar”. POROS TEKNIK 13, no. 2 (December 1, 2021): 112–117. Accessed May 6, 2024. https://ejurnal.poliban.ac.id/index.php/porosteknik/article/view/1097.