Contamination control is one of the most important aspects of heavy machine manufacturing. It helps in the process of product quality control, keeping the company clean and tidy, and making the machinery operate efficiently and effectively. The objective of this project is to help Trakindo, the biggest Caterpillar distributor in Indonesia to increase their star ranking in the Caterpillar Contamination Control Certificate by designing a new maintenance culture. Two main methods of field observation and interviewing were conducted to help gain information. However, to increase their star rankings, two main recommendations were suggested that could help to not only gain stars but also for maintenance and sustainability.