ELECTRICAL 29 2.2 TESTING OF STATOR. Using Multimeter, check the resistance between the phases of the stator winding. The resistance should be 0.040 ± 10% ohms per phase. 2.3 TESTING OF ROTOR: Measure the resistance of the rotor winding at the slip ring with multimeter. Resistance should be 2.1 ± 10% Ohms at 20 deg c or 3 ± 10% ohms at room temperature. 3.0 ASSEMBLY 3.1 Bearing Pressing in DEF: If the bearing in the drive end shield (DEF) has been discarded. Press in a new bearing using an Arbor press. Assemble the bearing holding cover late on the drive end flange using four counter sunk screws such that the projection of the cover plate is towards the rotor. 3.2 Rotor assembly in to the DEF: Place the rotor as shown; put the drive end shield on the rotor shaft as shown, press in the drive end flange by a Spacer ring using an Arbor. 3.3 Slip ring assembly: Press the fitting ring into the slip ring end shield, ensuring the opening of the fitting ring towards the mounting position of the voltage regulator.
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