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Question 1. What causes black oil?   Causes:   Black oil in the excavator’s hydraulic system is not only caused by dust, but also by improper grease application.   For example: When the gap between the bushing and the chisel exceeds 8 mm (allowing a little finger to fit inside), it is recommended to replace

Pressure loss, also known as leakage, is a common fault in hydraulic breakers. Once pressure loss occurs, the system pressure cannot be established, leading to environmental pollution, increased downtime, reduced productivity, increased production costs, and potentially unpredictable serious consequences. Therefore, controlling leakage in hydraulic breakers is crucial.   Classification of Leaks: Leaks in hydraulic breakers