V. working principle
When the operating handle moves upward, the volume of the upper cavity of the piston gradually becomes smaller, and the lubricant is sent to the oil reservoir along the delivery hose. The lower part of the piston gradually becomes larger, forming a negative pressure. The lubricant is sucked in. When the handle moves downward, negative pressure is formed in the upper cavity of the piston, and the lower one-way valve is closed. The sucked lubricant cannot return to the oil drum. At this time, the upper one-way valve of the piston is opened, and the lubricant enters the upper cavity of the piston. When the handle moves up again, repeat the process.
Six, instructions for use
1. When in use, one end of the oil delivery hose is connected to the fuel pump outlet and the other end is connected to the oil reservoir replenishment port. After use, the other end should be screwed on the barrel cap bolt.
2.The filter should be cleaned regularly
3. Fat should be added to the barrel in time when the oil level is in the lower position, so as to prevent fat-free air from mixing into the oil reservoir.