Lubricant delivered from the oil injector starts to drive through the umbrella valve in the BFA distributor.
When the umbrella valve closes the oil outlet hole, oil pressure forces oil storage block to overcome spring force and lower down, and the oil cavity starts to store oil.
When BFA oil storage block arrives at the top of the oil cavity, storing oil by BFA is completed.
When the oil pump stops supplying oil, the decompression valve is automatically opened to make lubricant in the main oil pipe to return through the decompression valve.
The system pressure is lowered, the umbrella valve reciprocates and closes the inlet oil, and the BFA oil storage block compresses the lubricant in the oil cavity to the the oil outlet port.
