TUBE ASSEM. 8J8300 - Caterpillar

1.7 Liter Unit Injector Test Specifications The 1.7 liter unit injectors can ONLY be tested on the 1U6661 Pop Tester.Valve Opening Pressure (VOP) Test:Maximum Pressure ... 42 160 kPa (6119 psi)Minimum Pressure ... 37 760 kPa (5480 psi)Leakdown Rate:Allowable pressure leakdown in two seconds from 20 000 kPa (2903 psi) ... 10 000 kPa (1451 psi)Tip Leakage:Allowable tip leakage in two seconds from 20 000 kPa (2903 psi) ... 1000 kPa (145 psi)(1) Solenoid valve assembly. Tighten solenoid valve assembly to a torque of ... 125 13 N m (92 10 lb ft)(2) Tappet.(3) Injector clamp.(4) Bolt. Tighten to ... 30 N m (22 lb ft)(5) Spacer.(6) O-ring. Lubricate with a 50/50 mix of 8T2998 Camshaft Break-In Lubricant and engine oil before installation of the fuel injector group into the cylinder head.(7) Maximum distance from the top of fuel injector group to the bottom of the solenoid valve assembly ... 92.83 mm (3.650 in)(8) Nozzle group. Tighten nozzle group to a torque of ... 170 15 N m (125 11 lb ft)See Testing and Adjusting section, for Electronically Controlled Unit Injector test instruction.