4TNV98 & 4TNE98 Diesel Engine Section 4. Fuel System15120. Remove the pump drive gear and hub as anassembly using an appropriate two-bolt gearpuller (Figure7-14).Figure7-14NOTE: On TNV98 models, the injection pump drivegear can be removed through the gear case coveropening.21. Once the fuel injection pump drive gear and hubassembly has “popped” loose from the taperedfuel injection pump drive shaft, carefully removethe drive gear nut (Figure 7-15, (1)) and lockwasher (Figure 7-15, (2)).Figure 7-1522. Locate the mark stamped into the upper outsidemounting boss of the fuel injection pump.Highlight this mark and make a correspondingmark on the gear case or front plate (Figure 7-16, (1)).Figure 7-16NOTE: Some model engines may require the intakemanifold and fuel injection pump insulator (Figure7-17, (2)) be removed to access the inner fuelinjection pump (Figure 7-17, (1)) retaining nuts.Figure 7-1723. If required, remove the intake manifold and fuelpump insulator to access the fuel injectionpump mounting nuts.
