PT. Tri Tunggal Laksana is an industry that focusing on wood processing. During the production period, the tools have a high frequency of trouble. Total Productive Maintenance (TPM) has been recognized as one of the significant operation strategy to regain the production losses due to equipment inefficiency. Many organizations have implemented TPM to improve their equipment efficiency and to obtain the competitive advantage in the global market in terms of cost and quality. In the implementation of TPM in a manufacturing organization, both Human-oriented and Process-oriented strategy has been identified as critical success factors. Based on the problem background, the research do because Rotary Machine 5 Feet having so many trouble in July to December of 2019 during the production period. After the research is done, the average of OEE calculation is equal to 56.29%. It can be concluded that the effectiveness of the machine is still far from world class standard that is equal to 85%. Six big losses factors that contribute most to Rotary Machine effectiveness is Reduce Speed Losses that is 22,31%. According to the fishbone diagram analysis factors that causing the OEE is low can be identified so that improvement can be done immediately.

Keywords : Fishbone Diagram, Overall Equipment Effectiveness, Six Big Losses, Total Productive Maintenance.