After investigation, we found that many diesel generators neglect the maintenance of the fuel pump during use. In fact, the fuel pump is an important part of the generator. To ensure the long-term durability of the generator, users should pay attention to the following issues:
1. Before installing the oil transfer pump for the generator set, check whether the model and specification are correct, and remove the antirust oil. The thickness of the gasket should be appropriate. In order to prevent the piston from being jacked or not operating properly, the gasket should be prevented from being too thin or too thick. When tightening the bolts, the tightening torque should be uniform to prevent damage to the oil pump.

2. If there is a rubber sealing device between the hand oil pump piston and the hand oil pump body on the oil transfer pump, do not remove it at will. If the rubber ring is damaged, replace it in time.

3. The coarse filter screen core in the joint of the oil transfer pump is very easy to be blocked due to cotton wadding and other dirt. It should be checked and cleaned frequently. The damaged filter screen must be repaired or replaced in time.

4. Ensure that all sealing gaskets of the oil delivery pump of the generator unit are intact, and the plastic seal ring should not be disassembled too often, and should be replaced regularly.

5. Ensure that the elasticity of the "four springs" of the plunger fuel pump is normal. "Four springs" refer to piston spring, tappet (roller) spring, oil inlet valve spring and oil outlet valve spring. If the spring elasticity is weakened or broken, it shall be replaced or cushioned for adjustment in time to avoid damage to the generator set.

6. The manual oil pump of the generator set must be pressed back after use, and the button shall be tightened at the same time to prevent the manual oil pump, rubber ring or ball valve and valve seat from air intake or oil leakage due to loose pressure.

7. The engine oil of the generator set to be filled shall be subject to sedimentation and filtration to ensure cleanliness and prevent the wear of the oil inlet valve, oil outlet valve and valve seat of the oil transfer pump due to excessive impurities. Sometimes, the oil valve may even become invalid due to the padding of impurities.