400KW Yuchai Generators Have Air In Their Fuel System

Check whether the battery voltage reaches the rated voltage

Because when the generator is normally in automatic state, its electronic control module engine control module monitors the state of the whole unit, and communication between EMCP control panels is maintained by battery power supply. When the external battery charger fails, the battery cannot be replenished, resulting in a voltage drop. At this point, the battery must be recharged. The charging time depends on the discharge of the battery and the rated current of the charger. In an emergency, you are advised to replace the battery.

Check whether the battery terminal is improperly connected to the cable

If too much battery electrolyte is added during normal maintenance, the battery surface may overflow, corroding the terminals, increasing the contact resistance, and resulting in poor cable connection. In this case, the corrosion layer between the terminal and the cable joint can be sanded and the screws re-tightened to make full contact.

The positive and negative cables of the starter motor are not securely connected

The probability of starting motor failure is small, but cannot be ruled out. To determine the motion of the starter, touch the casing of the starter at the moment of starting the engine. If the starter motor is not moving and the housing is cold, it means that the motor is not moving. Or the starting motor is seriously hot and has a burning smell, indicating that the motor coil has been burned out. It takes a long time to repair the motor. You are advised to replace it directly.

Yuchai generators have air in their fuel system

This is a common failure, usually caused by improper operation when replacing the fuel filter element. When air and fuel enter the pipe together, the fuel content in the pipe decreases and the pressure drops, causing the engine to fail to start. Exhaust treatment is required.

In addition to tell you how to identify yuchai engine model. Let's take the two engines OF YC4F90-40 and YC6J180-43 for example.

part YC: Abbreviation of Chinese Pinyin for Yuchai engine.

The second part numbers 4 and 6:4 indicate a 4-cylinder engine, and 6 indicates a 6-cylinder engine.

The third part F and J: The third part 1 is usually represented by a letter, which represents the size of the engine cylinder diameter. Different letters represent different cylinder diameter sizes, and the cylinder diameter sizes of each letter have not been checked for reference.

Part 4 90 and 180: This indicates the power of the engine, which is 90 and 180 horsepower respectively, or 160 horsepower if 160.

Part v 40 and 43: here is the emission standard of National Iv, if it is 30 or 31, it is national III emission standard. In addition, 40 and 43 are also different. Although they belong to national IV emission standard, 30 represents national III electric injection engine, 31 represents National III single pump engine and 33 represents National III EGR engine. if you find more related problems in the process of use want to be answered, call Guangxi Dingbo Power Equipment Manufacturing Co., Ltd, here you will be able to find the answer you want.

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