How to evaluate the quotation for second-hand generator sets

After summarizing years of unit experience, the generator manufacturer also summarized some reliable methods for estimating the price of second-hand diesel generator sets. Below, diesel generator manufacturers will share this method with you. The method can be carried out by asking one question, looking two, and trying three tests. Question 1: I ask about the purchase time, purpose and reason for the diesel generator set, the repair situation and what major parts have been replaced, and what problems are there in use, etc., so as to have a relatively comprehensive understanding of the machine. Second look: First, check whether the model is an out-of-date model, then look at the new and old degree of the diesel generator set from the appearance, check whether the parts are complete and whether there are any damage. The third test: The test machine is the specific steps: 1. Shake the flywheel up and down, if there is no sound or obvious shaking, it means that the gap between the main journal of the crankshaft and the bearing shell is not large; if there is no clicking sound, it means that the wear between the journal of the crankshaft connecting rod and the bearing shell is not serious. 2. Decompress the cylinder and shake the crankshaft. When the decompression is removed, if the piston rebounds greatly and the flywheel rotates rapidly, it means that the cylinder liner, piston, and piston ring wear is small. At this time, the oil pressure gauge reading should not be less than 1 or the oil pressure indicates that the red float can rise quickly, and the hand pressure float should be laborious. 3. It is easier to start the diesel generator set, the exhaust is colorless or light gray, the speed is stable and there is no noise, which means that the diesel generator set is in good technical condition. 4. Rotate the crankshaft to make the oil supply pump. If the injector makes a crisp sound of fuel injection, it means that the plunger pair and fuel injection nozzle are still performing well; if there is no abnormal sound in the gear room, it means that the wear of the gear is not serious. Through the above methods, the advantages and disadvantages of the second-hand diesel generator set can generally be distinguished. In this way, the price of the second-hand diesel generator will be more accurate.