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6D3-14 STARTING AND CHARGING SYSTEM 7. To remove the pulley, mount an 8mm Allen key in the vice with the short end upwards, place a 24mm ring spanner on the puley nut, position the internal hexagon of the rotor shaft onto the Allen ken, loosen the nut and remove the pulley. Note: the pulley has an integral boss which locks up against 8. Removing the rotor assembly. Remove the four retaining screws from the drive end housing, withdraw the rotor complete with the bearing. Note: the rotor must not be pressed from the drive end housing chuck type puler, take care not to distort the fan assembly during this process. 10.Remove the slipring end bearing using the same meghod as in 9. Clean Thoroughly clean all components except the rotor and stator Inspection 1. Rectifier assembly The following test equipment is required. (a) Adiode tester where the DC output at the test probes does not exceed 14 volts or in the case of AC testers 12 volts RMS. This is to ensue that when inspection rectifiers fitted with zener power diodes the forward and reverse checks are completer and are not masked by the diode turning on due to the zener breakdown voltage. (b) A zenere diode tester with a DC output in excess of 30 volts, the tester should also incorporate internal current limiting set to 5 Ma. to prevent high currents during inspection. (c) Diodes can be destroyed during service due to high temperature and overload, open circuits are usually a result of excessive voltage. |