The objective of this research was to develop a proposal for the optimization of a maintenance plan (PMO) for a 15 hp 4x3 MCM series 178 centrifugal pump for PSC Energy, which has presented failures in its internal components, resulting in delays in the loading of fluid in tanks and vehicles located in the different fronts of field work that were operated during 2019. All technical and historical equipment management information was diagnosed and established, such as resumes, indicators, formats, failure reports and surface well test inspections. With the above information and the execution of the correct analysis methods, we were able to identify the components with the highest risk of equipment criticality, the pump components were cascaded, the failure effect modes of the most critical components were identified and analyzed through the Pareto diagram, and additionally the life cycle benefit was predicted along with the unavailability cost and ROI calculation. These activities were carried out over a period of 10 months in the facilities of the company PSC energy located in Chia Cundinamarca. During the development of the PMO methodology, the activities described in the research methodology were fulfilled, which were of great importance in the development and adequate implementation of effective maintenance actions and adequate frequencies of the asset.