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Auto parts purchase skills

Date:2017-8-5 9:28:01Clicks:

1, look at the trademark logo is complete. Authentic product packaging quality is good, the box on the handwriting clear, overprint colorful. Packaging, bags, should be marked with product name, specifications model, quantity, registered trademark, factory name and telephone number, etc., and some manufacturers are still playing their own mark on the accessories. Some important components such as generators, distributors, fuel pumps, etc., are also equipped with manuals, certificates and inspectors to guide the user to use the correct maintenance. Purchase should be carefully identified to prevent the purchase of fake and shoddy products.

2, see whether the geometric size deformation. Some parts due to manufacturing, transportation, improper storage, easy to produce deformation. Inspection, the shaft parts can be rolling along the glass plate to see the parts and glass plate with or without light to determine whether to bend; to buy clutch driven plate steel plate or friction plate, the steel, friction In the purchase of oil seal, with the skeleton of the oil seal face should be round, with the flat glass without bending; no skeleton oil seal edge should be correct, with the hand to make it deformed , Should be able to restore the original state. In the purchase of various types of liner, should also pay attention to check the geometric size and shape.

3, to see whether the combination of flat formation. Parts in the handling, storage process, due to vibration, bump, often in the joint parts of the burr, indentation, damage or cracks, affecting the use of parts. Purchase should pay attention to check.

4, look at the surface of the parts without rust. Qualified parts of the surface, both a certain degree of precision and polite finish, the more important parts, the higher the precision, the more stringent anti-corrosion packaging. Purchase should pay attention to check, if found parts have rust spots, mildew spots or rubber pieces crack, loss of elasticity, or journal surface with obvious turning lines, should be replaced.

5, to see whether the protective surface is intact. Most parts are factory-coated with a protective layer. Such as piston pin, bearing with paraffin protection; piston ring, cylinder liner coated with anti-rust oil and wrapped with wrapping paper; valves, pistons and other anti-rust oil with plastic bags. If the package is found to be damaged, the wrapping paper is lost, the rust or oil is lost and should be returned.

6, see whether the loose parts of the adhesive. Any two or more parts of the combination of parts, parts are by pressing, bonding or welding, and they are not allowed between the loosening phenomenon, such as the pump plunger and the adjustment arm is through the combination of pressure; Clutch clutch wheel and steel plate is riveting combination, friction plate and steel is riveting or bonding; paper filter cartridge skeleton and filter paper is made of glue; electrical equipment is made of welding thread. If you find a loose, should be replaced.

7, to see whether the rotating parts flexible. When you buy a rolling bearing, the one-hand support bearing inner ring, the other hand to turn the outer ring, the outer ring should be able to quickly and freely turn, and then turn the pump shaft, Gradually stop. If the rotating parts of the rotation is not working, that the internal corrosion or deformation, do not buy.

8, see the assembly parts are missing. Formal assembly components must be complete in order to ensure smooth assembly and normal operation. Some of the components on the assembly of small parts if missing, will make the assembly components can not work or even scrapped.

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