6. Fuel Injection equipment2216.1.5 Installing a fuel injection pump[NOTICE]• Use a new O-ring on the fuel pump flange andapply grease.• Confirm whether the marks of the pump drivegear and the idle gear is correct.1) Turn a camshaft so that the key of the pumpcamshaft may almost agree in a position ofthe key groove of a pump drive gear.2) Insert a fuel injection pump into theinstallation hole of the gear case straight toprevent the damage of the O-ring. Insert afuel pump while confirming whether the keyof a camshaft and the key groove of a drivegear agree.3) Assemble a pump drive gear nut and awasher together temporarily.4) Turn a fuel injection pump to the positionwhere the marks of the fuel injection pumpand the gear case agrees.5) Fasten pump installation nuts (three nuts) onthe fuel injection pump.6) Tighten the pump installation nut by thespecified standard torque.Tightening torque of the pump drive gear nut (withoutlube oil)6.1.6 Adjusting fuel injection timingRefer to 2.2.6(1) in chapter 2.6.1.7 Troubleshooting of fuel injectionpumpComplete repair means not only replacing defectiveparts, but finding and eliminating the cause of thetrouble as well. The cause of the trouble may notnecessarily be in the pump itself, but may be in theengine or the fuel system. If the pump is removedprematurely, the true cause of the trouble maynever be known. Before removing the pump fromthe engine, at least go through the basic checkpoints given here.Basic checkpoints• Check for breaks or oil leaks throughout the fuelsystem, from the fuel tank to the nozzle.• Check the injection timings for all cylinders. Arethey correctly adjusted? Are they too fast or tooslow?• Check the nozzle spray.• Check the fuel delivery. Is it in good condition?Loosen the fuel pipe connection at the injectionpump inlet, and test operate the fuel feed pump.Tightening torque Nm(kgf•m)78-88 (8-9)
