Troubleshooting:
According to convention, it is generally believed that the Cummins diesel generator oil system is caused by air, blockage or loose seal. However, specifically for this diesel generator, maintenance. The staff first checked the oil system, filter element and other related components, and found no leaks or engine blockages. They also checked the fuel pump, fuel injector, etc. and found no problems. . Malfunctions in generator valve clearance, injection advance angle, etc. still exist.
Analysis of the causes of failure:
Then the technical staff analyzed that the check valve of the generator was not damaged, but only a little dust or dirt. dust particles adhered to the one-way engine oil return valve. The steel ball and sealing belt of the valve are on the upper surfaceer, which prevents the valve from closing tightly, which will cause the generator set to malfunction. It sounds simple, but it took several days from when the problem occurred to when it was resolved. Actually, I first suspected that there was something wrong with the oil return bolt, but when I pumped oil with a manual oil pump, I felt that the pressure in the oil system was basically normal, and there was also a clear oil return. noise coming from only the oil return bolt.