Analisis Kerusakan Sistem Hidrolik Pada Excavator dengan Menggunakan Metode FMEA
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IndonesianAbstract
The hydraulic system is a vital component of an excavator, responsible for moving key components such as the boom, arm, and bucket. Damage to the hydraulic system can reduce work efficiency and accelerate wear and tear on other components. This study aims to analyze damage to the excavator's hydraulic system using the Failure Mode and Effects Analysis (FMEA) method. The components studied included the hydraulic tank, filter, hydraulic hose, hydraulic pump, main control valve, and hydraulic cylinder. Each component was analyzed based on its severity, occurrence, and detection capability, and then a Risk Priority Number (RPN) was calculated.
The results showed that the damage with the highest RPN value before mitigation was the hydraulic hose (RPN = 192), followed by the hydraulic tank (RPN = 168), and the hydraulic cylinder (RPN = 148). The main causes of damage included corrosion, improper hose installation, oil contamination, and internal component wear due to inadequate lubrication. After mitigation measures such as sensor installation, preventive maintenance adjustments, and improved installation design, the RPN value decreased significantly. The FMEA method has proven effective in identifying and prioritizing failure risks, so it can be used as a reference in excavator hydraulic system maintenance programs.
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