ТОПЛИВНАЯ ФОРСУНКА ПРОВЕРКА


  1. INSPECT NOZZLE HOLDER AND NOZZLE SET


    1. Pressure test:


      1. A003GWZ

        Install the nozzle holder to the injection nozzle hand tester and bleed air from the union nut.

        Note

        Do not place your finger to the nozzle injection hole.

      2. A003AIE

        Pump the tester handle a few times as fast as possible to discharge the carbon from the injection hole.

      3. Pump the tester handle slowly and observe the pressure gauge.

      4. Read the pressure gauge just as the injection pressure begins to drop.

        Standard pressure
        15,790 to 16,570 kPa (161 to 169 kgf/cm2, 2,290 to 2,403 psi)

        Tech Tips


        • Proper nozzle operation can be determined by a swishing sound.

        • Varying the adjusting shim thickness by 0.05 mm (0.0020 in.) changes the injection pressure by approximately 628 kPa (6.4 kgf/cm2, 91 psi).

        • Only one adjusting shim should be used.

        • If the pressure is not within the standard, disassemble the nozzle holder and replace the shim on the top of the pressure spring.

          Adjusting shim thickness mm (in.)

          0.900 (0.0354)

          0.956 (0.0374)

          1.000 (0.0394)

          1.050 (0.0413)

          1.100 (0.0433)

          1.150 (0.0453)

          1.200 (0.0472)

          1.250 (0.0492)

          1.300 (0.0512)

          1.350 (0.0531)

          1.400 (0.0551)

          1.450 (0.0571)

          1.500 (0.0591)

          1.550 (0.0610)

          1.600 (0.0630)

          1.650 (0.0650)

          1.700 (0.0669)

          1.750 (0.0709)

          1.800 (0.0728)

          1.850 (0.0728)

          1.900 (0.0748)

          1.950 (0.0768)
    2. A003FU4E01

      Leakage test:


      1. While maintaining pressure at approximately 981 to 1,961 kPa (10 to 20 kgf/cm2, 142 to 284 psi) below injection pressure (adjust by tester handle), check that there is no dripping for 10 seconds from the injection hole or around the retaining nut.

        If the nozzle drips within 10 seconds, replace or clean and overhaul the nozzle assembly.

    3. A003DCXE01

      Spray pattern test:


      1. The injection nozzle should shudder at a certain pumping speed between 30 and 60 times per minute.

      2. Check the spray pattern during shuddering.

        If the spray pattern is not correct during shuddering, the nozzle must be replaced or cleaned.