3306 DIRECT INJECTION VEHICULAR ENGINE WITH NEW SCROLL FUEL – Injection Nozzle (7N449) (Sleeve Metering Fuel System – DI)

Bench test nozzles using clean SAEJ967 Calibration Oil (Kent-Moore Corp. J-26400 or Viscor Calibration Fluid 1487C-SAEJ967L) at a temperature of … 65 to 75°F (18 to 24°C)

Nozzle setting pressures (valve lift adjustment screw turned 3/4± 1/8turn from closed position):

Used Nozzle … 1500 to 2600 psi(10 300 to 17 690 kPa)

Used, adjusted nozzle … 2400 to 2600 psi(16 545 to 17 690 kPa)

Return oil leakage test pressure … 1400 to 1600 psi(9630 to 11 045 kPa)

Leakage in 15 seconds … No minimum or maximum

Maximum tip leakage is 20 drops in 15 seconds with a pressure of 200 psi (1380 kPa) less than opening pressure.

(1) Torque for valve lift locknut … 35 to 45 lb. in.(4.0 to 5.1 N·m)

(2) Torque for pressure screw locknut … 70 to 80 lb. in.(8.0 to 9.1 N·m)

(3) Torque for cap … 110 to 120 lb. in.(12.4 to 13.6 N·m)

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