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How to distinguish between the good and bad of the second-hand excavator?

点击数:32582017-06-12 15:47:12 来源: 轮式挖掘机厂家_抓铁机_全自动混凝土搅拌车_关于我们【官网】

新闻摘要:1, car paint: Look, is it a local paint or a whole car? How do you identify the paint on the body? Look at whether the whole car has been reworked, and the smoothness of the original paint and the original car paint can not be compared. 2, exterior:

1, car paint:
Look, is it a local paint or a whole car? How do you identify the paint on the body? Look at whether the whole car has been reworked, and the smoothness of the original paint and the original car paint can not be compared.
2, exterior:
First of all to see is the hood, then from the front, the car side look big and small arms are variant, and both sides of excavator cab and side door whether line, then look at the foot of it, whether there is fatigue fracture at the I-shaped frame, four wheels wear, identification of each of the different brand of excavator the chain bar has its own brand logo, can identify whether the original car.
3, tiny place:
See the nameplate on the cab, rivet, if that kind of market generally see the activities of the board's (usually with this rivet nameplate excavator not, a comparison of the same brand of the same type will know), the plate there is a problem, is put up, the above parameters is a problem if that is the original car, there is the identification information of the excavator, such as vehicle number, engine number etc. can be found from the body, to identify whether the original car parts of this car.
4, main components: engine oil leakage? How many passive traces do the screws on the car have? Do you have any traces of sealant? It is roughly possible to decide where to fix and where to change. The hydraulic system is the same.
5, test machine:
Try to check the oil and water in front of the computer, and then start a car, see whether it is normal to hear the engine sound is no exception, the arm referred to the most high, small arms extended to the most high, then turn off the bucket in place, do not see whether the engine flameout, panting panting serious, if serious, means a time to overhaul the engine.
Pressure unloading is observed, the small arm and bucket, if the big and small arm and bucket and pressure relief, but also with the naked eye can see relief relief quickly, so that the entire hydraulic system can have serious wear, no repair of the value. If it is a separate pressure relief, but also not too fast, it may be oil cylinder seal or control valve leakage problems, and two mobile phones are normal. If you do not have a pressure relief, you can almost consider the start.
The next step is to go for the motor and the rotary motor, two walking motor is two meter hydraulic system, first to see whether the motor is under idle speed can be walking around in circles, if there is no need to turn the engine can easily turn off the phenomenon, that the performance of the car. Increase the throttle, respectively, from both sides of the track, ears close to listen to the walk, the motor is no different, see 1 minutes inside the tracks on both sides of the rotation is the same, the work pump is no different sound. Then look at the rotary motor, respectively, to the left and right single turn action, listen to the rotary motor is no noise, in the rotating handle to the maximum amount, suddenly released to see the rotating motor, brake is normal. After all these tests, look at the pin shaft wear.
If the conditions permit, work for hours, try the overall performance of the machine, the action of even inertia, flexible performance. Through the above test machine, the overall performance of the whole machine is evaluated.
When buying a mobile phone two, careful observation, personally test machine, did not miss any suspicious local parts, do not listen to the words of the letter car dealer, so as to maximize the protection of their rights.
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