Installation of used injectors
When installing a previously removed injector, the following must be replaced: Pressure plate. Copper seal ring. Seal ring for injector socket. Seal ring for fuel return fitting hose Apply corrosion remover to the nozzle tip (from an aerosol can). After about five minutes, remove soot and oil particles with a rag. If the nozzle is heavily soiled, in order to make it easier to remove the copper seal, additionally clean the nozzle tip with a soft copper brush (avoid contact of the copper brush with the nozzle holes). To remove the old copper seal. carefully clamp the nozzle ring in a vice so that the ring is fixed in the vice, and the nozzle itself can be rotated between the jaws of the vice. Using light rotational and translational movements of your hand, remove the nozzle from the copper seal. rings. Use a scraper to clean any deposits that have accumulated under the copper O-ring. To remove soot particles from the seating surface, clean the injector seat in the cylinder head with a cloth moistened with oil or rust remover. Replace seal. injector well ring using mandrel -T10377-. To avoid damage to the new seal. rings, carefully push the oil-lubricated ring onto the fuel return fitting. highways. Install the injectors. Tighten the fuel union nuts. injector lines by hand. Check the installation without internal stress.
To tighten high-pressure pipes, use a torque wrench with a ratchet and a socket attachment -T40055-. Carefully place the return pipe fittings onto the seal. injector rings (First check if the seals are damaged. rings). The fitting should click into place with a clearly audible click. After this, you need to carefully press the latches down.
When replacing 1 or more injectors, the engine control unit must be written "quantity correction value (IMA) " And "voltage correction value (ISA) " for new injectors. In addition, you should check that "quantity correction value (IMA) " And "voltage correction value (ISA) " entered correctly for all other injectors. If the correct correction values are stored in the engine control unit, they must not be re-entered.
Remove air from the power system and check it for leaks
To remove air, do not disconnect the fuel connectors. high pressure lines, air will escape from the fuel. systems independently. Leave the engine idling for a few minutes. Then turn off the engine. Turn off the ignition. Check the entire power supply system and return fuel connections. highways (4 things.) for tightness. In case of leakage (despite tightening to the correct torque) replace the corresponding part. Return pipelines can only be replaced as an assembly with a pressure reducing valve. Then test drive with at least one full load acceleration and check the high fuel pressure circuit again. systems for tightness. If there is air left in the power system, the engine may go into emergency mode during a test drive. Turn off the engine and clear errors from the event recorder. Then continue with a test drive.
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