1, pay attention to the assembly mark to ensure that the assembly relationship of the 7.5*6.75 Flow Formed Aluminum Alloy Wheels meets the technical requirements. Some regular parts are engraved with assembly marks, such as timing gear marks, piston top marks and other assembly marks. If there is no mark or the mark is blurred, it will be unrecognizable and will be assembled. It brings great difficulties.
2, Pay attention to the lack of regular assembly components must be complete, in order to ensure smooth loading and normal operation. Some small parts on the assembly are missing, which may be "parallel imports."
3. Pay attention to the protective layer. In order to facilitate the storage and prevent the 17.5*6.0 Aluminum Alloy Wheels from colliding, the parts have a protective layer before leaving the factory. For example, the piston pin and the bearing bush are protected by paraffin; the surface of the piston ring and the cylinder sleeve is coated with anti-rust oil and wrapped with wrapping paper. If the seal sleeve is damaged, rust-proof oil or paraffin is lost during purchase, it should be returned.
4, Pay attention to some important parts of the certificate, especially the assembly, such as carburetor, distributor, generator, etc., usually with instructions to guide the user to install, use and maintain.
5. Pay attention to specifications Most automotive parts have specified models and technical parameters. If you purchase electrical equipment, you should check whether the voltage and power of the replaced parts are consistent.