Let's continue to learn how to choose good auto spare parts?
5\Look for loose auto spare parts bonding
The auto spare parts are combined by press-fit, gluing or welding between the auto spare parts. They forbid loosening between the parts. If plunger and adjustable arms consist by combination of press-fit, clutch and steel combination is riveting, friction plate and steel is riveted or glued, the paper filter is the filter frame and filter paper glued together, and the electrical equipment is welded thread.
6\See whether the flexible rotating auto spare parts
Rotate the shaft of auto spare parts, you will feel well without catching. When you purchase rolling bearings, one of your hands supports inner ring of bearing in the auto spare parts. The other hand round and round the outer ring. Outer ring should be able to freely rotate quickly. Then it gradually stopped. If the moving auto spare parts rotate is not working, that internal corrosion or deformation.
7\See whether the lack of auto spare parts assembly parts
To ensure the smooth assembly and normal operation, assembly components must complete the formal integrity. Some assembly auto spare parts if the leakage of individual small auto spare parts installed. Will. Assembly components can not work or even scrapped.
8\See whether a clear sign the assembly.
To ensure the assembly relationship with the auto spare parts meet the technical requirements. In some auto spare parts (such as the timing gear) engraved on the surface of the assembly marks. If there is no sign or unrecognizable sign, it will take some difficult to the assembly.