Alternator: Service and Repair

REMOVAL

1. Disconnect the battery negative terminal first, then the positive terminal.
2. Disconnect the generator connector, and remove the cable from generator "B" terminal.
3. Remove the drive belt.
4. Pull out the through bolt and then remove the alternator(A).




5. Installation is the reverse of removal.

DISASSEMBLY

1. Remove the generator cover(A) using a screw driver(B).




2. Loosen the mounting bolts(A) and disconnect the brush holder assembly(B).




3. Remove the slip ring guide(A).




4. Remove the nut, pulley(A) and spacer.




5. Loosen the 4 through bolts(A).




6. Disconnect the rotor(A) and cover(B).




7. Reassembly is the reverse order of disassembly.

INSPECTION

ROTOR
1. Check that there is continuity between the slip rings (A).




2. Check that there is no continuity between the slip rings and the rotor (B) or rotor shaft (C).
3. If the rotor fails either continuity check, replace the generator.

STATOR
1. Check that there is continuity between each pair of leads (A).




2. Check that there is no continuity between each lead and the coil core.
3. If the coil fails either continuity check, replace the generator.