Failure Analysis of Fan Motor in Komatsu Bulldozer D155-6 Unit
Keywords:
Cooling System, Fan Motor Failure, Engine OverheatingAbstract
The cooling system is one of the most critical components in heavy equipment such as the Komatsu Bulldozer D155-6. Approximately 40% of engine failures are caused by issues within the cooling system, highlighting its importance in maintaining engine temperature and preventing overheating. This study focuses on the failure analysis of the fan motor, a key component in the cooling system. The fan motor plays a vital role in regulating engine temperature by ensuring optimal airflow through the radiator. Through field inspection and diagnostic analysis, it was found that engine overheating was primarily caused by abnormal fan speed, which resulted in inadequate cooling. The root cause of this issue was identified as a malfunction in the fan motor. This paper presents the steps taken to diagnose the problem, the components that were replaced, and recommendations for future preventive maintenance. These findings aim to enhance equipment reliability and operational efficiency in heavy-duty applications.References
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