PUMP GP-AUX -A 20R7175 - Caterpillar

Bench test nozzles using clean SAE J967 Calibration oil at a temperature of ... 65 to 70°F(18 to 20°C)Nozzle setting pressures (valve lift adjustment screw turned 3/4 1/8 turn from closed position):9L6969 Nozzle: Used nozzle ... 1900 to 2900 psi(13 090 to 19 980 kPa)Used, adjusted nozzle ... 2700 to 2900 psi(18 600 to 19 980 kPa)9N3979 and 1W5829 Nozzles: 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 (9L6969) ... 2 to 30 dropsLeakage in 15 seconds (9N3979 & 1W5829). NO minimum or maximum.9L6969 Nozzle: Maximum tip leakage is 10 drops in 15 seconds with pressure 200 psi (1380 kPa) less than opening pressure.9N3979 and 1W5829 Nozzles: 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)