The objective of this study was to establish the factors influencing the effectiveness of maintenance of Construction Equipment (CE). The methodology used included literature review, observation, interviews, and questionnaire. The established factors influencing the effectiveness of maintenance of CE include: wrong perception of users of the effect of maintenance on productivity and on effectiveness of the machine; failure of the owners and users to comprehend the importance of outsourcing maintenance, which denies the companies the opportunity of using specialised expertise of OEM personnel trained in maintenance given that the companies have maintenance personnel with a low level of skills. Therefore to improve the effectiveness of maintenance of CE it is recommended that the mindset of the owners and maintainers of CE be changed through training regarding the effect of maintenance on productivity and effectiveness of CE and that the maintainers are given the ability to understand the OEM recommendations.