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Maintenance Points Of Yuchai Diesel Generator Fuel Injection Pump

Jan. 21, 2022

The fuel injection pump is an important component of the fuel supply system of the Yuchai diesel generator set. If the fuel injection pump fails, it will directly affect the power, economy and reliability of the Yuchai diesel generator set. Therefore, it is very important to regularly maintain it. If necessary, in this article, Jiangsu Starlight Electricity Equipments Co.,Ltd. will give you a few key points of Yuchai diesel generator set fuel injection pump maintenance.


1. The unit should use clean diesel.

Yuchai diesel generator sets have high requirements for oil filtration. Users must choose clean diesel oil that meets the required grades when using them. At the same time, they must ensure 48 hours of precipitation before use, because any impurities in the diesel oil will be sprayed on. Serious corrosion or wear caused by oil pump plunger, oil outlet valve pair and transmission parts.


2. Regularly check the amount and quality of oil in the oil pool of the fuel injection pump.

Every time before starting the Yuchai diesel engine, the quantity and quality of the oil in the fuel injection pump should be checked to ensure that the quantity of the oil is sufficient and the quality is good. The early wear and tear of the diesel engine will lead to insufficient power of the diesel engine, difficulty in starting, and in severe cases, corrosion and corrosion of the plunger and the oil outlet valve. In addition, when the diesel engine is not used for a long time, it is necessary to check whether there are impurities such as water and diesel oil in the oil in the oil pump oil pool. Pieces rusted stuck and scrapped.


3. Regularly check and adjust the fuel supply advance angle of the fuel injection pump and the fuel supply interval angle of each cylinder.

During use, due to the loosening of the coupling bolts and the wear of the camshaft and roller body parts, the advance angle of oil supply and the oil supply interval angle of each cylinder often change, which makes the combustion of diesel deteriorated and the power performance of the diesel generator set. The economy becomes worse, and at the same time, it is difficult to start, unstable in operation, abnormal noise and overheating, etc., especially for the fuel injection pump that has been used for a long time, more attention should be paid to the inspection and adjustment of the fuel supply interval angle.


diesel generator set

4. Regularly check and adjust the fuel supply of each cylinder of the fuel injection pump

Due to the wear of the plunger coupler and the oil outlet valve coupler, the internal leakage of diesel oil will cause the fuel supply of each cylinder to be reduced or uneven. The amount of fuel supplied to each cylinder can be determined by means of pipe temperature and other methods to ensure the power of the diesel generator set. Otherwise, the Yuchai diesel generator set is prone to start difficulties, insufficient power, increased fuel consumption, and unstable operation.


5. Regularly check the camshaft clearance.

Yuchai generators have strict requirements on the axial clearance of the camshaft of the fuel injection pump, which is generally between 0.03 and 0.15mm. When the clearance is too large, shims can be added on both sides for adjustment. If the radial clearance is too large, it is generally necessary to replace new products. Excessive camshaft clearance will make the Yuchai diesel generator run unstable, so users should pay attention to regular inspection.


The above are some key points of Yuchai diesel generator set fuel injection pump maintenance introduced by Jiangsu Starlight Electricity Equipments Co.,Ltd.. I hope to help you, normal maintenance is an important prerequisite to ensure the fuel injection pump work and prolong the service life of Yuchai diesel generator set, if you encounter such a problem but do not know how to deal with it, please contact the Yuchai generator manufacturer or the professional and technical personnel of Yuchai after-sales service to solve it.


Jiangsu Starlight Electricity Equipments Co.,Ltd. is a diesel generator set manufacturer with more than 40 years of production experience. Its main brands include Yuchai generator sets, Cummins generator sets, Volvo generator sets, etc., and 64 sales and service departments nationwide. Users provide one-stop service of design, supply, debugging and maintenance. Welcome contact us by email sales@dieselgeneratortech.com

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