“OPTIMIZATION OF ENGINE SERVICE TIME SYSTEM AND P2H ON OHT CAT 777 HEAVY EQUIPMENT AT PT. SITUS SAPTAINDRA SEJATI ADMO SOUTH KALIMANTAN”. Injection: Indonesian Journal of Vocational Mechanical Engineering 3, no. 2 (August 31, 2023): 52–57. Accessed September 26, 2026. https://injection.jurnal.politap.ac.id/index.php/injection/article/view/1774.