Is the logo of the trademark complete?
The products produced by regular auto parts manufacturers have clear writing on the outer packaging box and bright overprint colors.Product names, specifications and models, quantities, registered trademarks, factory names, addresses and telephone numbers are all available, and some manufacturers are stillAccessoriesMark yourself on it. Some important parts are also equipped with instructions for use, certificate of conformity and inspector's stamp to guide users in the correct use and maintenance. When purchasing, you should be aware of it carefully to prevent you from buying fake and shoddy products.
BuyAuto partsPrecautions
See if the geometric dimensions are deformed
Some parts of auto parts are prone to deformation due to improper manufacture, transportation and storage.When checking, you can roll the shaft part along the glass plate to see if there is light leakage at the joint between the part and the glass plate to judge whether it is bent;ClutchWhen the driven disc steel plate or friction plate, you can hold the steel plate and friction plate in front of your eyes to observe whether it is warped;Oil sealThe end face of the oil seal with a skeleton should be in a perfect circle, which can be fitted with the plate glass without bending; the outer edge of the oil seal without a skeleton should be straight and deformed by holding it with the hand, and it should be able to return to its original shape after releasing it. When purchasing various types of gaskets, attention should also be paid to checking the geometric dimensions and shapes.
Is the logo of the trademark complete?
The products produced by regular auto parts manufacturers have clear writing on the outer packaging box and bright overprint colors.Product names, specifications and models, quantities, registered trademarks, factory names, addresses and telephone numbers are all available, and some manufacturers are stillAccessoriesMark yourself on it. Some important parts are also equipped with instructions for use, certificate of conformity and inspector's stamp to guide users in the correct use and maintenance. When purchasing, you should be aware of it carefully to prevent you from buying fake and shoddy products.
BuyAuto partsPrecautions
See if the geometric dimensions are deformed
Some parts of auto parts are prone to deformation due to improper manufacture, transportation and storage.When checking, you can roll the shaft part along the glass plate to see if there is light leakage at the joint between the part and the glass plate to judge whether it is bent;ClutchWhen the driven disc steel plate or friction plate, you can hold the steel plate and friction plate in front of your eyes to observe whether it is warped;Oil sealThe end face of the oil seal with a skeleton should be in a perfect circle, which can be fitted with the plate glass without bending; the outer edge of the oil seal without a skeleton should be straight and deformed by holding it with the hand, and it should be able to return to its original shape after releasing it. When purchasing various types of gaskets, attention should also be paid to checking the geometric dimensions and shapes.
Precautions for buying auto parts
Check whether the joint is flat
During the transportation and storage of parts and accessories, due to vibration and bumps, burrs, indentations, breakages or cracks are often generated in the joints, which affect the use of parts. Pay attention to inspection when purchasing.
Precautions for buying auto parts
See if there is rust on the surface of the part
The surface of the spare parts of the auto-fitting grid has both a certain precision and a bright finish. The more important the spare parts, the higher the precision, and the stricter the anti-rust and anti-corrosion of the packaging.Pay attention to inspection when purchasing. If you find that the parts have rust spots, mildew spots orRubber partsCracks, loss of elasticity, or obvious cutting tool lines on the surface of the journal should be replaced.
Precautions for buying auto parts
See if the protective surface is intact
Most parts of auto parts are coated with a protective layer when they leave the factory.Such asPistonPin,BearingProtect with paraffin;Piston ring, The surface of the cylinder liner is coated with anti-rust oil and wrapped with wrapping paper;Valve, Pistons, etc. are immersed in anti-rust oil and sealed with plastic bags. If it is found that the sealing sleeve is damaged, the packing paper is lost, or the rust-preventing oil or paraffin wax is lost during the purchase, it should be returned.
Precautions for buying auto parts
See if the glued parts are loose
Auto parts are made up of two or more parts. The parts are press-fitted, glued or welded. No looseness is allowed between them. For example, the oil pump plunger and the adjusting arm are combined by press-fitting. ; The clutch driven wheel and the steel plate are riveted and the friction plate and the steel plate are riveted or glued; paperFilterThe frame of the filter element and the filter paper are glued together; the ends of the electrical equipment are welded. If any looseness is found during purchase, it should be replaced.
Precautions for buying auto parts
See if the rotating parts are flexible
When purchasing a rotating part assembly such as an oil pump for auto parts, turn the pump shaft by hand to feel flexible and free of jamming. When purchasing a rolling bearing, support the inner ring of the bearing with one hand and rotate the outer ring with the other hand. The outer ring should be able to rotate quickly and freely. Then gradually stopped. If the rotating parts do not rotate well, it means that the inside is rusted or deformed, so don't buy it.
Precautions for buying auto parts
See if there are any missing parts in the assembly
The regular assembly parts of auto parts must be complete and intact to ensure smooth assembly and normal operation. If the individual small parts on some assembly parts are missing, the assembly parts will not work or even be scrapped.
