Company Details
  • J&S Autoparts Industries Co., Ltd.

  •  [Zhejiang,China]
  • Business Type:Manufacturer , Trade Company
  • Main Mark: Americas , Asia , East Europe , Europe , North Europe , West Europe , Worldwide
  • Exporter:81% - 90%
  • Certs:ISO9001:2000
J&S Autoparts Industries Co., Ltd.
Home > News > How to buy auto parts - J&S Autoparts
How to buy auto parts - J&S Autoparts

How to buy auto parts - J&S Autoparts

See specifications models if appropriate < br /> Most auto parts have specified the type and technical specifications . Such as the purchase of electrical equipment , should be careful to check with the replacement parts for voltage , power are the same ; the purchase of the belt , should pay attention to the model and perimeter .< br /> < br /> < br /> < br /> Look trademarks are complete < br /> Good quality authentic product packaging , the packaging writing clear , bright color overprint . Some important components such as generators , distributor , fuel pump , etc ., comes with instruction manual , certificate and inspectors chapters to guide users to the proper use and maintenance . Purchase should be careful to recognize , avoid buying a fake and shoddy products .< br /> < br /> < br /> Look geometry without deformation < br /> Some parts due to manufacturing , transportation , improper storage , easy to produce deformation . Check when the shaft parts can scroll along the glass circle , look at the parts and glass bonded to determine whether the presence or absence of light leakage bent ; optional or friction clutch plate steel sheet , can be steel , friction sheet held in front observe whether warp ; in the purchase of oil seal , seal end face with a skeleton should positively circular , flat glass bonding with no warping ; skeleton oil seal outer edge should be straight , with a deformed hand After restitution should be able to let go . In the purchase of all kinds of gaskets should also be careful to check the geometry and shape .< br /> < br /> < br /> See whether the formation of binding sites < br /> Parts in the handling , storage process , due to vibration , bump , often produce glitches in the binding site , indentation , breakage or cracking , affecting parts . Purchase should pay attention to check .< br /> < br /> < br /> See whether the parts of the surface rust < br /> Qualified Parts surface , both have a certain precision burnished finish , the more important parts , the higher the accuracy , the more stringent packaging rust and corrosion . Purchase should pay attention to check , if found parts have corrosion spots , mildew spots or pieces of rubber cracking , loss of elasticity , or journal surface obviously turning lines , should be reversed .< br /> < br /> < br /> Look protective surface layer is intact < br /> Most parts in the factory are coated with a protective layer . As the piston pin , bearing with paraffin protection ; piston rings , cylinder coated with anti - rust oil and wrapped with wrapping paper ; valves , pistons and other after - rust oil dip with a plastic bag package . When you purchase if found damaged glands , wrapping paper loss , anti - rust oil or paraffin loss , it should be returned .< br /> < br /> < br /> Look for loose parts glued < br /> By a combination of two or more parts into parts , by press - fit between the parts , gluing or welding molding process , there are loose between them is not allowed , such as the pump plunger and the adjustable arm is fitted by press combination ; the clutch Yi and steel is a combination of riveting , friction plate and steel is riveted or glued ; the paper filter cartridge and filter paper is glued skeleton made ; thread is welded electrical equipment a . If there is loose , the purchase should be reversed .< br /> < br /> < br /> Look rotating parts are flexible < br /> < br /> When you purchase machine pumps and other rotating parts assembly , rotate the shaft by hand , should feel flexible cable wiring ; the purchase of rolling bearing , single - handedly support the bearing inner ring , an outer ring spun the other hand , the outer ring should be able to quickly rotate freely , then gradually stopped . If the rotating member rotation not working , the internal corrosion or deformation not to buy .< br /> < br /> < br /> Look assembly parts for missing parts < br /> Regular assembly member must complete and intact , in order to ensure a smooth assembly and running . Some individual small parts assembly member mounted on if the leak will make assembly parts can not work or even scrapped .< br /> < br /> < br /> See assembly mark is clear < br /> To ensure the assembly relationship fittings meet the technical requirements , and in some parts ( such as the timing gear ) surface engraved with the assembly mark . If there is no sign or symbol fuzzy illegible , assembly will bring great difficulties , even installed wrong .< br /> < br /> < br /> Look mating surface for wear < br /> If there are signs of wear parts with the surface , or the surface of the paint after painting accessories poke find old paint , is mostly used camouflage pieces , then returned on request .< br /> < br /> < br /> See whether the target surface hardness < br /> < p > Each fitting has a surface hardness requirement specified in the purchase and the merchant to determine the proper quotient , the available hacksaw stubble to test plans , no scratches when slipping plan , indicating high hardness ; slight superficial scar after stroke high hardness ; there are obvious signs of post - stroke , indicating low hardness Face careful not to damage when test program . < p > $ 0 $ < p > < br />

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