Change the method of diesel engine nozzles. such have? What are the replacement of diesel engine nozzles. such step

by:DEFUS     2020-06-21
Understanding replacement of diesel engine nozzles. such method is very important, because if the diesel engine fuel injector nozzle clogging the car fault caused by such problems such as, you will need to timely replacement of diesel engine fuel injector nozzle. The next and everybody about the replacement method of diesel engine nozzles. such have? Replace the diesel engine nozzle what are the steps? What are the replacement method of diesel engine nozzles. such 1, find the nozzle or pump relay or pull out fuse. 2, in the car until the car stalled again. 3, remove the plug nozzle. 4, pull out the fuel injector nozzle, pay attention to find a clean piece of cloth in advance, one is to wipe nozzle leakage of fuel, as it is pulled, 2 it is to block the engine nozzle interface to prevent debris into the engine. 5, after the replacement by the reverse steps. What are jammed for diesel engine nozzles. such 1, diesel oil is not clean, high pressure tubing contains impurities, to close the needle valve couple is lax, the combustion chamber high pressure gas channeling, burn out needle valve couple. In addition, the injector pressure regulating spring and tappet the dirt on the parts through the injector follower moved to the injector needle valve, or oil is used to prevent leakage of cotton rope, galvanized iron wire through high pressure oil pipe into the injector, can make the needle valve accidentally stuck. 2, machine high temperature fuel valve cooling bad, cause the oil valve accidentally stuck. And delivery time is too late, too much or blocked cooling waterway scale, the water pump impeller wear face, such as motor overload for a long time and can make the engine is overheating. 3, delivery valve wear and stop the injection fuel injector, there was a drip phenomenon, as to make the nozzle spray combustion of coke coke, stuck fault. 4, injector installation, packing gasket or gasket destroyed, cause leakage, cause local temperature and fuel injector. 5, the injection pressure is too low, due to the combustion chamber high pressure gas channeling. 6, parts manufacturing reasons, such as fuel injector installation hole on cylinder head too tightly together with injector, needle valve body with the mounting holes on the cylinder head clearance is too small, cylinder head injector mounting holes machining too deep. What change of diesel engine nozzles. such steps 1 and remove the carbon deposit in fuel valve seat hole and other sundry. 2, in the end surface coated with a small amount of grease injector cap nut, stick seal copper gaskets (in the right direction Some injectors with copper seal cone itself, when installation should not add copper washers) 。 Three injector and hole and tighten the cylinder head, with a special tool to tighten. 4, injector positioning groove on the pressure plate must be to align the injector of locating pin. 5, tighten the clamp two fixed bolt, the strength should be uniform, the same tightening torque, usually tightening torque shall not be greater than 20 n. m. Otherwise, will cause the needle valve couple deformation, jammed. After 6, tighten, should check under the needle valve cone in cone (copper Or sealing washer) Out within the ( For soil commonly 0. 3mm) And in the plane of the needle valve tip under the cylinder head stretch out the amount ( As a general rule, be 0. Qiao a 0. 85毫米) 。 If do not conform to the provisions, should increase or decrease in copper cone ( Or sealing washer) The above adjustment gaskets or replace copper cone ( Or sealing washer) 。 7, such as only remove the fuel injector for maintenance, should pay attention to each fuel injector, copper cone ( Or sealing washer) And the adjusting shim on assembly, don't wrong, to ensure that the needle valve cone and point out quantity meets the requirements. 8, put on clean high pressure hose and return hose. 9, the high pressure fuel injection pump to the fuel injector tubing imports, generally with a slot filter, it shall not be arbitrarily dismantled or packing. More about 'the replacement method of diesel engine nozzles. such have? Replace the diesel engine nozzle what are the steps to 'all content, hope useful for everyone.
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