The lubricant conveyed from the oil injector shall be pulled up from the umbrella valve in the GFB distributor.
When the umbrella valve seals the oil outlet port, the oil pressure forces GFB oil storage block to overcome the spring force to lower the oil level, and the oil cavity starts to store oil.
When GFB oil storage block is pushed to the top of the oil cavity, oil storage of the GFB is completed.
When the oil pump stops supplying oil, the unloading valve is opened automatically, and the main oil pipe injects oil into it, and the system pressure is lowered down. The umbrella valve resets and seals the inlet oil, and the GFB oil storage block starts to eject lubricant in the oil cavity.
