Agricultural machinery hardware accessories to buy "10 look"

Buy agricultural machinery hardware accessories must not be scorned, agricultural machinery safety is very important, agricultural machinery parts are qualified, supporting the relationship between the normal operation of agricultural machinery. Therefore, the purchase must be comprehensive, the following "10 look" may help you choose the right agricultural machinery parts.

1, see whether the specification model is suitable

When buying agricultural machinery parts, first of all to find out what type of machine parts, and secondly to ask whether it is their own specifications. For example, when purchasing electrical parts, check whether the voltage and power of the parts to be replaced are the same; when selecting the drive belt, pay attention to whether the model and the perimeter are consistent; when selecting the fuel injection head, pay attention to the diameter of the spray hole and the atomization cone angle Accuracy; When selecting a piston or piston ring, it is necessary to distinguish whether it is a standard size or a larger size.

2, see if the logo is complete

The packing box and box shall be marked with the product name, specification, model, quantity, registered trademark, factory name and telephone number. Some large or important spare parts are also equipped with instructions for use, certificates of conformity, and seals for inspectors when they leave the factory. They should be clearly identified when purchasing products to avoid buying counterfeit and shoddy products.

3, see if the bonding site is smooth

For joints, especially castings with sudden changes in diameter or weldments with welds, see if there are any burrs, defects or cracks in the joint.

4, to see whether the parts surface rust

Metal parts to see whether the surface of rust spots, rubber and plastic parts to see if there is significant aging, cracking, loss of elasticity, shaft parts to see whether the journal surface turning contours, etc., if there should be exchanged.

5, see if the protective surface is intact

The piston pin and the bearing shell shall be protected by paraffin wax. The piston ring shall be coated with anti-rust oil on the surface of the cylinder liner and wrapped with wrapper. The impervious rust-preventing oil such as the plunger pair, outlet valve pair, needle valve pair, valve and piston shall be pressed with a plastic sleeve. Sealed.

6, see if the connector is loose

The parts made up of multiple parts must not be loosened. For example, the plunger and the adjusting arm of the pump, the clutch driven hub and the steel sheet, the friction plate and the steel sheet, etc. If loose, the normal operation of the part will be affected. Exchanged.

7. See if the rotating parts are flexible

When selecting the oil pump hydraulic pump assembly, turn the pump shaft by hand, you should feel flexible and without any stagnation; when the fuel injection pump assembly is toggled, the plunger should be able to rotate flexibly in the plunger sleeve and push the roller. The plunger should be able to automatically return to position under the action of a spring.

8, see whether the assembly parts missing parts

The injector assembly shall be checked for leakage of small parts such as small steel balls in the steel gasket tappet of the oil return joint seal. For the fuel injection pump assembly, check whether the plunger positioning screw, roller body positioning pin, etc. are missing.

9, see the mating surface without wear

If there are traces of wear on the mating surface, or if the painted part is peeled off the surface paint and old paint is found, it is mostly used parts.

10, see if the surface hardness is up to standard

The surface hardness of the mating parts is stipulated. After confirming the purchase and negotiating with the merchant, the hacksaw can be used to test for fractures. If the hardness of the scratch is high, the hardness of the trace is high, and the hardness is high after the stroke. Obvious traces of low hardness.

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