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Methods to Identifying The Quality of Second-hand Generator Sets

Jul. 22, 2022

Today, we will briefly introduce the content of the simple method to identify the quality of second-hand generator sets. What else do you need to know about this? Welcome to consult our starlight website. Next, we will introduce the relevant information to you.

diesel standby generator

First, ask about the purchase time, use and the reason for the current sale of the old generator set, inquire about the previous repairs, what main components have been replaced, and ask what problems are in use, so as to have a more comprehensive and systematic understanding of the old generator set.


Second, look carefully at the signs and appearance of the old generator set. See which factory produced it, when it left the factory, and how long it has been since now; see if the paint on the exterior is peeling off, whether the parts are damaged, whether the model has been eliminated, etc. Judging the age of the old generator set from the sign and appearance.

Three, test machine. Carefully inspect the old generator set by cranking the crankshaft, turning the flywheel, starting the machine, etc. The specific inspection steps are: shake the crankshaft to make the fuel injector supply oil. If the fuel injector makes a crisp sound, it means that the performance of the fuel injector and the plunger pair is still good; if there is no abnormal sound such as "beep" in the wheel chamber, it means that the gear wear is not serious.

Turn the flywheel up and down, if there is no sound, it means that the gap between the crankshaft main shaft stem and the bearing bush is not large. Turn the flywheel so that the piston is close to the bottom dead center, and then shake the flywheel left and right, if there is no "click" sound, it means that the wear between the connecting rod shaft and the tile is not serious.

Decompress the cylinder and turn the crankshaft. When the decompression is removed, if the rebound force of the piston is large and the flywheel rotates rapidly, it means that the wear degree of the cylinder, piston and piston ring is small. When cranking the crankshaft, the pointer of the oil pressure gauge should not be lower than 1 or the red mark of the oil instruction can rise quickly, and it should be hard to press down by hand.

Start the generating set. If it is easy to start, the smoke is colorless or light gray, and the speed is stable without noise, it means that the technical condition of the old generator set is good. Through the above-mentioned methods to identify the old generator set, it is generally possible to distinguish the old and the new degree and the pros and cons. In this way, the price of the old generator set will be more accurate.

Starlight Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.

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