Rectifier Diode / Bridge: Service and Repair

Alternator Disassembly:

1. Remove the four through bolts.

Removal Of The Alternator Rear Housing:

2. Heat the rear bearing seat with a heat gun for a few minutes (122-140 °F, 50-60 °C).

Separating The Alternator Case:

3. Separate the rear housing from the drive end housing by inserting a flat tip screwdriver into the openings and prying them apart. Take care not to damage the stator with the tip of the screwdriver.

Stator/Rectifier Assembly Removal:

4. Separate the rear housing from the stator/rectifier assembly by removing the four screws and the terminal nut.

Unsoldering The Rectifier Assembly:

5. Unsolder the rectifier from the stator leads.

NOTE:
^ To avoid damaging the diodes with heat, pinch the stator leads between pliers to carry heat off, and apply the soldering iron only long enough to separate the leads from the diode.
^ Use a 100W soldering iron.

6. Install the new rectifier in the reverse order of removal.
^ Apply the soldering iron only long enough to ensure a good connection so the heat will not damage the diodes.
^ Use only a rosin core type solder or solder joints will corrode.