Rectifier Diode / Bridge: Service and Repair

Rectifier Removal

(Mitsubishi):

1. Remove the four through bolts.

(Mitsubishi):

2. Heat the rear bearing seat with a 1,000 W hair drier for about five minutes (120 - 140° F, 50 - 60° C).

(Mitsubishi):

3. Separate the rear housing from the drive-end housing by inserting a flat tip screwdriver into the openings and prying them a part. Be careful not to damage the stator with the tip of the screwdriver.

(Mitsubishi):

4. Separate the rear housing and drive-end housing with the stator attached to the rear housing.

(Mitsubishi):

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

(Mitsubishi):

6. Unsolder the rectifier from the stator leads.
- 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 rectifier.
- Use a 100 W soldering iron.

7. 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.