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    Causes and stuck the nozzle repair methods

    Farmers used diesel engines are generally known comrades, is a diesel fuel injector fuel supply system of one of three pairs of precision coupling. Its normal service life of 1,000 hours or more. However, due to improper use, often using several hundred hours, or even dozens of hours to wear card died.
        
    First, the main injector stuck: ① diesel dirty, there are impurities in high-pressure tubing, injector needle even accelerated wear of parts, pieces off the needle even lax anti-channeling gas combustion chamber pressure, burning Couples bad needle. In addition, the fuel injector pressure regulator spring, the Tappet and other parts of the dirt moved through the injector injector needle jib top, or oil on the road to prevent leakage of cotton rope, wire into the jet by the high pressure tubing oil pumps, and will cause the needle stuck Couples. ② machine cooling bad injector temperature is too high, resulting in valves of stuck. The oil too late, too much cooling water scale or blockage, water pump impeller face wear, engine overload, etc. will make the long-term engine overheat. ③ a valve wear, so that when the injector to stop fuel injection drip phenomenon, resulting in coke coke fuel nozzle, the occurrence of stuck faults. ④ injection pressure is too low, resulting in anti-gas channeling high-pressure combustion chamber. ⑤ injectors installed, drain gasket, or gasket damaged equipment, resulting in leakage, causing the local temperature is too high injector stuck. ⑥ parts manufacturing reasons, such as the cylinder head and fuel injector and fuel injector mounting holes with tight body and cylinder head valve mounting hole gap is too small, the cylinder head fuel injector mounting hole too deep processing and so on.
        
    Second, the nozzle stuck in the repair methods: first card died within the nozzle into the diesel fuel or heating oil, then remove with a cloth to live, and then hand tighten needle clamp and slowly activity from the needle Remove the valve body. A small amount of clean oil drops in the valve body, so that repeated needle in the needle body activities, until the needle valve body can move freely. Valve sealing surface, such as traces of burns, should be used for grinding abrasive paste. Should pay attention to grasp the abrasive grinding paste and the amount of grinding time. To clean the needle valve injector fitted with dual fittings, and after adjusting the injection pressure can be re-used



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