Prodeco has a maintenance department in charge of carrying out maintenance schedules for the equipment that are available in the company, it has tool warehouses where mechanics, electrical and electronic can use to work on the equipment, in addition to that it has a parts warehouse when equipment requires component change (PCR). The types of maintenance carried out by the company are Preventive Maintenance and Corrective Maintenance. Maintenance plans are carried out by Prodeco staff and other Relianz and Chaneme (CHM) contractors since the company has a very large amount of equipment. As an intern in this company, I contribute to the maintenance processes that the company manages, work on the modifications of hydraulic and mechanical systems that will be made to the teams, make the reports of rework to the teams, the use of the virtual platform SIS (Service Information System CATERPILLAR) to download equipment maintenance procedures, know the internal structure of the components (motors, pumps, power train, fan motor, etc).