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When maintaining oil research plunger pumps, attention should be paid to the following ten aspects: 1. Water can corrode oil pumps; therefore, substances containing water must not be used to create a vacuum with these pumps. A water pump should be used for vacuum creation before use. 2. For materials containing a large amount of solvent, please first remove most of the solvent in an oven before using an oil pump to create a vacuum. 3. Use the hydraulic oil pump in the correct sequence to prevent backflow. 4. After using the vacuum oven, be sure to clean it thoroughly and wipe clean its glass windows. 5. Wipe off the surface rust preventive oil. 6. Remove the rust preventive oil from the interior of the governor and the fuel injection pump, and fill it with lubricating oil of the specified grade. 7. The rust preventive oil in the fuel lines should also be removed before use. Feed fuel into the fuel pump lines and continuously rotate the fuel pump camshaft until clean fuel is discharged from the valve seat. 8. The fuel choice is appropriate. 9. Fuel with the appropriate grade must be used. Generally, hydraulic oil grade 23 is used in summer, while grades 46 or 68 are used in winter. 10. The fuel used must be clean, free of any impurities or moisture.
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