How to distinguish the worn parts of excavator in the process of purchasing?

In the process of excavator operation, the use of pure parts can not only reduce the operating costs of the whole machine, but also prolong the service life, and ultimately protect the vital interests of consumers. In order to prevent the misuse of non genuine consumers and hurt, below we will distinguish methods on equipment operation often used in filter, bucket teeth and injector are introduced.

First of all, the introduction of air filter core, genuine and counterfeit products, the way to identify the appearance.

First, pure quality, the outer steel wire mesh spacing is uniform, and brush with white antirust paint. The fake products are usually just plain steel mesh, and the steel plate holes are sparse, and there are broken holes.

Second, pure genuine inner steel wire mesh joint, welding surface is very uniform; and counterfeit products mostly use spot welding method, overlap steel wire net longer, side tilt. The counterfeit air filter only imitates the geometry size and appearance of the genuine product, but can not reach the engineering standard requirement of the filter at all, and the filtering effect is greatly reduced.

Third, the pure color filter paper is white, delicate paper, the upper and lower lines arranged neatly, no deformation; fake color filter brenstone or other colors, rough paper, the upper and lower lines by assembling conditions, filter paper extrusion, bending line. The poor filter paper has high ash holding capacity, which will cause more impurities to enter the engine system, resulting in an early overhaul of the engine.

Fourth, pure air filter in the bottom of the internal and external filter manufacturers have the factory number, and counterfeit but not.

Now, the introduction of wood filter, machine filter of pure quality and counterfeit goods, the way to identify the appearance

First, pure genuine, surface spray paint bright and clean, counterfeit color is dim, because the shell plate material is bad, with spots.

Second, pure quality, uniform drilling at the bottom, silk smooth; counterfeit drilling layout is asymmetric, the thread has burr. Burrs or small metal impurities, if present, will enter the engine system directly, resulting in scratches and wear of the precision parts.

Third, the filter paper is both a genuine bond strip method with metal clips, and more is the use of fake staples or seamed. Most of the counterfeit filter has a short filter, and the impurity does not enter the engine system directly through the filter paper. The reason is that the filter paper is not bonded firmly at the beginning and the end of the filter. This kind of harm is very serious.

Next, introduce the pure quality of the bucket teeth and the appearance of counterfeit goods

First, pure teeth casting has logo and quality; counterfeit or without marks or marks.

Second, the pure bucket side wall is thicker, the groove and the teeth are closely matched; the forged wall is thinner; the seat groove is in the front of the tooth; the clearance between the teeth is usually too large.

Third, pure bucket teeth weight of 6KG (220-5 as an example), counterfeit generally around 4KG. The strength of the fake bucket teeth is not enough, it is not wearable and easy to break. There is an error in the casting of the meshing part of the tooth root. It is easy to install or cause the bucket to fall off when the gap is too large. Moreover, the use of fake gear teeth will increase the driver's labor intensity, affecting work efficiency.

Finally, introduce the harmfulness of using a fake injector

The poor processing accuracy of the fake injector will cause bad atomization, oil dripping and stagnation, resulting in black smoke in the engine. Speed up the early wear of engine parts and cause great losses.

Through the above day-to-day maintenance needs, spare parts, authenticity and harm of the introduction, I believe that consumers have already had a more profound understanding. The value of these parts is relatively low, but their harm to the equipment as a whole is several times or even hundreds of times. So I hope that consumers can actively protect their own interests, to avoid lose, resolutely away from counterfeit goods, choose pure products.