Bench test nozzles using clean SAE J967 Calibration Oil (Kent-Moore Corp. J-26400 or Viscor Calibration Fluid 1487C-SAE J-967C) at a temperature of … 65 to 70°F(18 to 20°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)
