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- home > Supply > Domestic price mini excavator, Kerry and Heavy Industries (Online) Harbin mini excavators Price
Information Name: | Domestic price mini excavator, Kerry and Heavy Industries (Online) Harbin mini excavators Price |
Published: | 2015-06-19 |
Validity: | 0 |
Specifications: | Any |
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Detailed Product Description: | Excavator maintenance taboo: a cylinder gap measure not allowed in the measurement of the cylinder gap Harbin new mini excavator price, failed to measure the vertical direction of the piston skirt piston pin hole in, measured in other directions. Structural characteristics of aluminum alloy pistons are small great Harbin new mini excavator price for a cone, and the skirt section is elliptical, so the circumferential direction of the cylinder gap not equal. When measuring provisions to the long axis of the ellipse gap prevail, ie measuring clearance between the piston skirt perpendicular to the direction of the piston pin hole. This measure is more convenient, accurate, and in reciprocation, the piston skirt due to the effect of a vertical lateral pressure in the direction of the piston pin hole and wear large, so measuring cylinder gap, should be perpendicular to the piston skirt piston direction of the pin hole measurement. Pistons fire heating the piston and the piston pin is an interference fit Harbin new mini excavator price, so when installing piston pins, piston thermal expansion should be, then, some maintenance personnel will be on the fire directly heating the piston . This approach is very wrong, because all parts of piston uneven thickness, will not the same degree of thermal expansion and contraction, flame heating causes the piston to uneven, easily deformed; piston surface will adhere charcoal Harbin new mini excavator machine prices, reduce the life of the piston. If the piston reaches a certain temperature, natural cooling, the microstructure would have been greatly reduced damage and wear, their life will be significantly shortened. When installing the piston pin, the piston can be placed in the hot oil uniformly heated to slow expansion, must not use direct fire heating.泰安嘉 and Heavy Machinery Co., Ltd. excavator at low status of equipment maintenance has caused the majority of drivers attention. In fact the main problem equipment used at low temperatures and difficulty in starting the engine assembly badly worn. 1. The minimum start speed is usually cold start engine can be started at a certain temperature to represent the temperature startup performance, and said its low-temperature start-up performance with the lowest temperature of the engine can be started. The main types of start-up performance of the engine, combustion chamber design, process levels. During use, the engine cold start of the engine oil viscosity mainly by evaporation of petrol or diesel, the impact of low-temperature fluidity and battery working capacity diesel. Drag torque of the engine crankshaft rotation speed and starting at low temperature is mainly affected by the impact of lubricating oil viscosity. As the temperature drops, the oil increase friction, the engine drag torque increases, so that the time required to start the engine power increases. Influence of fuel on engine start-up performance is mainly its evaporation. As the temperature decreases the viscosity and increases the relative density of gasoline; diesel fuel reduced mobility at low temperatures, the viscosity increases, causing poor atomization of diesel, deterioration of the combustion process. After the temperature was further reduced because the fuel precipitate wax precipitation, mobility fuels will gradually lost. If the diesel fuel contains water, winter may also cause the formation of ice within the supply system is not working. Therefore, the need for diesel precipitation and filtration before use. 2. Low temperature wear in the engine cycle, 50% of cylinder wear occurs during the startup process, and a greater impact on cold start engine wear. Engine cold start, the cylinder wall wear serious main reasons: during the boot process, the cylinder wall lubrication conditions are poor; cold start, most of the fuel in a liquid state into the cylinder, the cylinder wall scour film. Domestic price mini excavator, Kerry and Heavy Industries (Online) Harbin mini excavator price offered by 泰安嘉 and Heavy Machinery Co., Domestic price mini excavator, Kerry and Heavy Industries (Online) Harbin mini excavator price Taian Jia and Heavy Machinery Co., Ltd. (www.tajhzg.com/) this year introduced a new upgrade, the above picture is for reference only, please call this page or Tel picture on to obtain the latest information, contact: Xing Jingli. |
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You are the 13646 visitor
Copyright © GuangDong ICP No. 10089450, Taian Jia and Heavy Machinery Co., Ltd. All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility