With the development of social needs, the market for second-hand cars is getting bigger and bigger, and the number of people buying second-hand cars is also increasing. How do we understand such a problem? Jinrui learned about the simple method of second-hand car inspection through detailed understanding, that is, checking the "screws" on the car can determine the quality of a second-hand car. I hope it will be useful to everyone.
Small screws can identify the quality of second-hand cars, a very useful method:
1）: Cover Screws
First of all, as a novice to see the car, open the hood and go straight to the hood screws. The hood screws are all painted! As long as the paint surface of the screws is damaged, it proves that the hood has been disassembled. There is a story here. . Of course, no one will disassemble or replace the cover for no reason!!
2）: tank frame screws
As a reinforcement, let me tell you that some of the water tank frames are connected by solder joints or by screws. If they are connected by solder joints, don’t worry about them, just look at the attachment screws on the water tank frame. If there are no screws such as headlights If it moves, it means that the problem in front of it is not big!!! The probability of accident is very small.
Here I want to talk about the headlight screw is not the key point, and sometimes the parts need to be changed, the main thing is to look at the water tank frame screws, you must pay attention!!! Simple but very useful method of checking used cars "screw identification method"!
3）: Engine Base Screws
It is the screw that fixes the engine on the longitudinal beam. This screw is very important. There are three purposes for disassembly and assembly.
1. In case of an accident, the longitudinal beam needs to be repaired (it is a big accident, and the front face of the car that hit the longitudinal beam is gone)
2. Engine maintenance or overhaul
3. Replace the machine foot pad
4）: door screws
Generally, there is no need to dismantle the door for repair if there is a small scrape, but if there is a big collision, the door must be removed or replaced, so the door screws are very important!!!
The disassembly and assembly of the car door shows that there is a big collision and it is not easy to repair, so remove it and repair it. If you can’t detect the frame of the car and the small white door, just give up!!! Very important!!!
5）: Screws for the trunk lid
If there is a rear-end collision accident, if the collision intensity is high, it will cause damage to the trunk cover. The trunk cover is very strong and must be removed and repaired. Small scratches do not need to be disassembled!!!
Here, the editor is teaching you that a good way to identify the good and bad of screw rust prevention is to look at the color. Generally speaking, the anti-rust function of screws is generally performed by galvanizing. China Standard Parts Network uses the understanding of screw knowledge to share the color of screws to distinguish the good or bad of screw anti-rust.
There are three most common colors of screws on the market, which are white zinc, blue zinc, and zinc layer. (See the picture below)
This kind is white zinc, and the anti-rust time is the shortest
This color is blue zinc, and the anti-rust time is better than that of white zinc
This is the one with the longest anti-rust time. The color looks a little shiny. It is generally called a zinc layer. The anti-rust time is the best. If you buy electrical appliances in the future, you can see the color of its screws. You can see the good and the bad.
