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Improper Installation of Fuel Injection Pump for Diesel Generator Set

Sep. 08, 2023

Do you know what faults are caused by improper installation of the fuel injection pump in diesel generator sets? Firstly, it is analyzed that the installation of the semicircle key is not in place. For fuel injection pumps connected by flange plates, when the installation position of the semicircle key between the fuel supply timing gear and the automatic adjustment of the fuel supply advance angle and the camshaft of the fuel injection pump is incorrect, there will be problems such as inaccurate fuel supply timing, difficulty in starting the diesel generator set, smoking, and high water temperature. If the adjustment cannot be made through the curved hole on the flange, the fuel injection pump needs to be removed and reinstalled. After removal, obvious indentation can be observed on the semicircle key.


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If the passive disc is misaligned by 180 °, for fuel injection pumps connected by a cross shaped coupling, it is possible to misalign the passive disc by half a turn (180 °) during installation, resulting in failure to start and smokeless exhaust from the exhaust pipe. Even if the engine catches fire under strong starting, there will still be a noisy sound and severe smoke from the exhaust pipe, making it unable to work. At this point, the connecting screws should be removed, the fuel injection pump cam should be turned half a turn to reconnect, and then the fuel supply timing should be adjusted through the curved hole.


It is possible that the positions of the inlet and outlet screws are installed incorrectly. When connecting the oil pipe, if the outlet screw is mistakenly installed on the inlet pipe joint of the fuel injection pump, due to the one-way valve inside the outlet screw, fuel cannot enter or only a small amount enters the inlet chamber of the fuel injection pump, making the diesel generator set unable to start or unable to refuel to increase the speed after starting. At this point, the resistance of using the hand oil pump to pump oil is very high, and it is even impossible to press the hand oil pump. At this point, simply change the installation positions of the inlet and outlet screws to eliminate the problem.


Jiangsu Dingbo Power Generation Equipment Co., Ltd. was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. The company has a registered capital of 218.88 million yuan. The company covers an area of 86,000 square meters and a building area of 55,000 square meters. There are more than 660 employees, including 456 professional technicians and 106 senior technicians. It has 46 sales and service outlets nationwide. The main products are diesel engines, generator sets, and diesel generators, providing users with a one-stop service of design, supply, debugging and maintenance at any time. Dingbo has always insisted on using first-class talents, building first-class enterprises, manufacturing first-class products, creating first-class services, and making every effort to build a first-class domestic enterprise. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to sales@dieselgeneratortech.com.

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