TM 10-3930-664-24 4. Test for proper operation of rectifier plate (9) prior to removal.  Using multimeter, check resistance between the following test points: - Housing and winding ends - B+ and winding ends - D+ and winding ends Resistance between all test points should be less than  0.33  ohms. Higher  reading indicates defective diode.  Replace rectifier plate (9) if diode is defective. 5. Test for proper stator resistance prior to removal of stator (10).  Resistance between phase outlets shall be 0.22 ohms + 10%. 6. Using soldering gun, remove solder from phase connections on rectifier plate (9).  Using a screwdriver, straighten ends of leads.  Pull leads out of fastening holes. 7. Carefully pull stator (10) out of ring end shield (11). 8. Remove two screw and washer sets (12).  Remove nuts (13), washers (14), insulating washers (16), spring washers (15), insulators (17), and insulator caps (18) from B+ and D+ terminals. 9. Carefully remove rectifier plate (9) from ring end shield (11). 10.  Remove four screws (19).  Pull assembled rotor (20) and bearing (21) out of drive end shield (22). 11.  Using bearing puller, remove bearings (21,  23) from rotor (20).  Remove cover plate (24). 12.  Test rotor (20) for proper resistance.  Resistance shall be 9.0 ohms +10%. 13.  Using test prods, apply 80 vac to rotor (20).  Check for short circuit to ground. 3-91