auto parts

. Try to use sealant, and use paint instead if necessary to achieve ideal sealing effect;

Second, carefully check the appearance quality of rubber seals before assembly; Press fit with special tools to avoid deformation by knocking;

Third, add lubricating grease as required, clean and dredge the vent hole and one-way valve regularly;

Fourth, the assembly shall be carried out under extremely clean conditions, and the working surface of parts shall be free of bumps, scratches, burrs and other attachments;

Fifth, the operating procedures shall be strictly followed, and the seals shall be correctly installed to prevent deformation if not in place;

Sixth, master the performance specifications and use requirements of seals, and replace the failed parts in time;

Seventh, for thin-walled parts such as side covers, use sheet metal cold correction; The shaft hole parts easy to wear can adopt metal spraying, welding repair, adhesive, machining and other processes to reach the original size;

VIII. If the nut thread is broken or loose, repair or replace it with a new one and tighten it to the specified torque.

What's a good way to choose and purchase auto parts? How can we choose and purchase appropriate auto parts with high cost performance ratio? Here, I recommend the following tips to help you choose good auto parts: lost, should be returned.

1. The packaging of the original accessories is generally standardized, with unified standard specifications, clear and regular printing, while the packaging of counterfeit products is poorly printed, and it is often easy to find flaws in the packaging;

2. Look at the color. Some original parts are assigned a certain color on the surface. In case of other colors, they are fake and inferior parts;

3. The appearance of the original accessories shall be clearly printed or cast and marked, while the appearance of counterfeit products shall be rough;

4. It is seen that illegal paint dealers simply process waste parts, such as dismantling, assembling, splicing, painting, etc., and then sell them as qualified products to illegally obtain cash receipts;

5. According to the quality, the materials of the original accessories are qualified according to the design requirements, and the counterfeit products are mostly replaced by cheap and inferior materials;

6. The appearance of products with poor workmanship is sometimes good, but due to poor manufacturing process, cracks, sand holes, slag inclusions, burrs or bruises are easy to occur;

7. If the "storage" of auto parts has problems such as dry cracking, oxidation, discoloration mirror or aging, it may be caused by poor storage environment, long storage time, poor materials, etc;

8. Look at the "engagement". If the rivets of the clutch plate are loose, the brake hose is unglued, the electrical parts are soldered off, and the paper filter element is disconnected, it cannot be used;

9. See that some marks are marked on the regular parts of the identification part, such as the gear mark, piston top mark and other assembly marks, which are used to improve/increase the correct installation of the parts, and those that are not can not be purchased;

10. The missing and regular assembly parts must be complete and intact to improve/increase the smooth loading and normal operation. Some small parts on some assemblies are not loaded, which is generally "parallel goods", which makes loading difficult. The whole assembly parts are often scrapped due to the shortage of individual small parts;

11. Look at the protective layer. In order to facilitate storage and prevent parts from bumping, protective layers are provided before parts leave the factory. For example, bushings, large and small bearing shells, pistons, valves, etc. are generally protected with paraffin to avoid surface damage. If there is no protective layer on the surface of these important accessories, most of them are "junk";

12. Some important parts, especially assemblies, such as carburetors, distributors, generators, etc., are usually delivered with instructions and certificates to guide users in installation, use and maintenance. If they are not, they are mostly fake and inferior products;

13. When selecting auto parts according to the specifications, find out the main technical parameters, and the special technology should meet the use requirements. Some fake and shoddy products have the same appearance as the real ones, but they are not suitable for installation. They are either larger or smaller, and are always not satisfied with use, leaving potential accidents.

14. The test report issued by a third party can not only show the authenticity, but also show the quality.

Commercial vehicle parts enterprises are an industry with high industry segmentation [1], and most of them are emerging individual enterprises. For these small and medium-sized enterprises, the capital pressure of early investment has been great, and the cash receipts after production are not high, so it is relatively difficult for them to increase R&D investment. In addition, the price of auto parts and raw materials has been rising in a certain period of time, and enterprises need to pay a large part of funds for raw materials.

The single marketing is because commercial vehicle parts enterprises are limited by regional segmentation, which determines that they can only maintain customer relations in a point-to-point mode. The problem of capital also determines that spare parts enterprises are difficult to invest heavily in technology research and development. The repeated construction nationwide has made the spare parts enterprises mired in price competition, which has caused serious capital waste. A complete cake is fragmented, which makes it difficult to form large-scale production, thus making it difficult to improve their profitability and make large investment in subsequent research and development.

However, despite the many problems faced by commercial vehicle parts enterprises, most of them can still survive, and the key is the demand of vehicle manufacturers. After all, enterprises produce parts with less technology. In terms of labor costs and manufacturing costs, they still have less requirements for mobile assets.

The problem of vehicle manufacturers' path selection is also an important reason for the difficulties faced by the current spare parts enterprises. Most domestic commercial vehicle enterprises do all kinds of products regardless of model and type, which is not conducive to product segmentation, and thus is not conducive to the segmentation of auto parts enterprises, nor is it conducive for parts enterprises to concentrate on a specific product segment. Most enterprises only attach importance to the current production and do not attach importance to the protection of intellectual property rights. Some spare parts of commercial vehicles have no patents even if they have technologies and products, and they don't even know what patent protection is.

Of course, the low-end technology and thin cash register of commercial vehicle parts enterprises are also related to the characteristics of commercial vehicles. Commercial vehicles are different from passenger vehicles. Commercial vehicles are a kind of smart choice tool. Customers focus on its cost performance when purchasing. As long as it is durable, the purchase cost can be offset by the value created in use later. Therefore, commercial vehicles have less requirements on the refinement of spare parts configuration and technical content. However, another reality is that the refinement requirements of commercial vehicles are gradually emerging. Some foreign commercial vehicle giants have begun to refine their configuration requirements. In a certain period, many large foreign commercial vehicle enterprises have entered the domestic market in large numbers, which has brought major challenges to domestic commercial vehicle enterprises. In a certain period of time, the parts enterprises should do is to optimize the structure, enhance the technical competitiveness, and strengthen the ability to develop market channels.

Due to the lack of necessary follow-up funds to expand production capacity and sufficient funds to support R&D, most spare parts enterprises are still limited to the point-to-point marketing model, which makes it difficult to go out of the regional market and become well-known spare parts enterprises. The commercial vehicle spare parts enterprises that are difficult to achieve success are still struggling in the era of meager profits. In a certain period of time, auto parts enterprises have fallen into two strange circles that are difficult to get rid of. One is that local protectionism has seriously caused one-on-one marketing of parts enterprises. Their market development ability is insufficient, and it is difficult to form scale effects. Therefore, they have no decision-making power in the entire commercial vehicle industry chain, and they are completely reduced to OEM; Enterprises are obsessed with low price competition and do not pay attention to intellectual property protection, which in turn increases local protectionism. The second strange circle is that low technology leads to low cash receipts, which makes it difficult to sustain R&D funds, which in turn leads to low technology.

This is the circular dilemma faced by China's commercial vehicle auto parts enterprises.