Opening Pressure Test
With testing gauge (US 1111) still connected to injector, move pump lever down slowly. Note pressure at which injection nozzle releases fuel. Adjust, if necessary, by changing shims until working pressure reaches 2248-2364 psi (158-166 kg/cm2 ) for Turbo Diesel models or 1706-1850 psi (120-130 kg/cm2 ) for all other models. Thicker shims increase pressure, thinner shims decrease pressure.
NOTE:
A shim thickness increase of 0.0019" (0.05 mm) increases pressure by 71 psi (5.0 kg/cm2
). Shims are available in thicknesses of 0.039 - 0.070" (1.00-1.95 mm) in 0.0019" (0.05 mm) increments.