1. Use the correct maintenance tools.

2. Sealing elements, such as O-rings, gaskets, etc., shall be cleaned with clean hydraulic oil before being equipped. In particular, lubricating oil shall be added to the sliding surface of some hydraulic elements that are tight during installation.

3. The breaking hammer elements shall be kept in a clean place. Before use, they shall be cleaned with hydraulic oil. Water vapor, paint, Cinnamon water or acid solution shall not be used for cleaning.

4. Discharge the gas from the rear cover and accumulator before maintenance or repair.

5. The hydraulic components are kept absolutely clean, and dirt is the biggest culprit that causes the hydraulic system failure.

6. The hammer shall not be changed or modified without authorization.

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