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Pro- active maintenance emphasize the routine detection and correction of the root cause conditions thet would otherwise lead to the equipment failure. There are three easily detectable symptems in a hydraulic equipment. abnormal noise, High fluid temperatur and slow operation.
1. Oil Leakage
2. Pressure Drop
will say that high oil temp are agood indacator jurky movement ,slow movement leaks and slow responce to controls
overheating,abnormal noise and vibration
