DLLA145P2168 Injector Nozzle Common Writing
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DLLA145P2168 Injector Nozzle Causes of Damage
- Fuel injector nozzle failure caused by impurities (water, lead, aluminum powder, iron powder, sulfide) in fuel exceeding standard requirements.
- The nozzle is normally worn due to long time working under high temperature
- Nozzle needle wear leads to oil hole blockage, insufficient fuel injection injector cannot work properly.
- Nozzle needle wear leads to oil hole blockage, insufficient fuel injection injector can’t work properly.
- The wear of the nozzle leads to the increase of fuel quantity, resulting in black smoke of the vehicle, and the fuel injector can’t work properly when it is serious.
- If the nozzle needle can’t move smoothly stuck may cause serious damage to the injector nozzle
- The rusting of the nozzle spring leads to spring fracture and black smoke from the vehicle.
- The opening pressure of the nozzle decreases, and the oil quantity of the injector increases, leading to black smoke of the vehicle, and the injector can’t work properly when it is serious.
- Oil-nozzle needle valve lift adjustment gasket wear oil-nozzle needle valve stroke becomes larger, the fuel injector oil quantity becomes larger, resulting in black smoke of vehicles, resulting in the fuel injector can’t work properly when serious.
The cracking of the nozzle cap is caused by high intensity work under high temperature.
- Check whether there is deformation, cracking, thread damage, quenching, leakage and rust in the guide sleeve, spring, gasket and tight cap of the nozzle. The tight cap of the nozzle must be replaced after being disassembled for more than 5 times, as shown in the following.
- Replace the tight cap of the nozzle and the copper gasket of the injector nozzle
- Check whether the gap between the nozzle needle and the nozzle shell is within the standard range and whether it reaches the standard for use
- All parts should be examined for wear under a microscope at least 20 times larger
- Nozzle tight cap deformation, cracking, thread damage, quenching, leakage, will lead to black smoke vehicle cap, fuel injector damage.
- Injector opening pressure greater than or less than the specified range may cause injector damage.
- Failure to replace wearing parts in time during maintenance may lead to fuel injector damage.
DLLA145P2168 Injector Nozzle Storage Standard
- The warehouse and cargo yard where the injectornozzles are stored should be kept clean and dry, and away from the factory buildings that generate harmful gases and dust; do not mix with acid, alkali, salt and other substances; the storage place should have a good drainage system; the cargo yard should be flattened with gravel or furnace ash to enhance the water permeability of the surface layer to keep the reservoir area dry.
- when the injector nozzlesare put into storage, the surface cleaning work should be done well to remove water traces, oil stains, ash and other dirt, remove the rust and do anti-rust treatment in time. Packaged nozzles must be protected from damage.
- Keep the warehouse dry and preventing moisture. The relative humidity is usually below 70%for the injector nozzles placed in the room, and the corrosion of the injector nozzles is significantly reduced.
- Injectornozzles must be stored in the warehouse, and they are forbidden to store in the same warehouse with commodities with high water content.
- After the injector nozzle is exposed to rain, the corrosion rate will increase significantly. The purpose of sealing is to isolate the injector from rainwater and humid air,so the warehouse window should be checked in time to avoid rainwater entering the warehouse.
- If the injector nozzle package is damaged, it should be repaired or replaced; when the package is damp, the packaging material should be dried; if the original anti-corrosion and oil applied at the factory is found to be damaged or dried up, it should be cleaned and re-applied oil in tim
- It is forbidden to leave the injector nozzle exposed in the air for a long time.
- It is forbidden to store acid, alkali, salt and other substances together with the injectornozzle.
- The unpacked dieselinjector nozzle must be rust-proof during secondary storage.
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