TM 5-4320-300-145-5. ALTERNATOR ASSEMBLY (CONT)Location/ItemActionRemarksstator winding and the lamination. Replace thestator. Test for stator continuity by connectingthe ohmmeter probes to each pair of the follow-ing test points:Point A to point A1Point B to point B1Point C to point C1You should have a low resistance reading (approxi-mately an ohm or less) in each test. Infinite re-sistance indicates an open winding. Replace thestator if it fails any of the above tests or, if thealternator has been disassembled because of anelectrical malfunction, replace the stator after allother components have been checked and foundto be satisfactory.15. BearingsInsert the rotor shaft into SRE frame bearing androtate rotor. Check for looseness, binding, or noiseduring rotation, and for other damage. Check driveend bearing in the same way. Replace faulty bearing.16. Brush andRemove brush and holder assembly and leads fromholderSRE frame. Inspect the brush and holder assemblyassemblyfor cracks, signs of overheating, and distortion. In-spect the brushes for cracks, oil saturation, andwear. If brushes are worn, oil soaked, or cracked,replace the brush and holder assembly. Depressbrushes in brush holders. Brushes should slidefreely in brush holders. Replace brush springs ifweak. Check that continuity exists between eachbrush and its respective lead wire. If brush andholder assembly is electrically faulty, replace it.REASSEMBLY17. Brush andInstall brush and holder assembly and leadsholderinto SRE frame. Tighten mounting and leadassemblyhardware securely.18. RotorCarefully aline rotor shaft with bearing in SREframe. Depress brushes in holders and slide rotorinto frame.19. FramesInsert and tighten screws that secure SRE frameto DE frame.20. Collar, fan,Install collar, fan, and pulley on rotor shaft;and pulleysecure with washer and nut. Torque to 50 to 60 ftlb (68 to 81 Nm).5-13
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