Genuine Mazda MPV Alternator Brush

Mazda MPV Alternator Brush Parts and Q&A

• Brushes
  B3C7-18-W77
  Q:

  How do Voltage Regulator relate to replacing alternator brush on Mazda MPV?

  A:

  Removing the Alternator to replace the alternator brushes: First, remove the alternator and label halves on the alternator so that they can be fixed back in place. Then remove the front pulley, and once again, in case there are no air power tools, remove it in an auto service establishment. Unscrew the four bolts which hold the front cover on to the main assembly, then take great care in removing the front cover off the alternator main assembly, being careful not to scratch the main assembly. Make sure that the stator is clamped to the rear cover, and in case the halves are not easily separable, hold the rear part in a vise with a rag in case it gets damaged. Then proceed to take out the rotor, the rectifier and the brush holder mounting screws then disassemble the rear part with the rotor and rectifier/brush assembly. With a soldering iron clean the solder off the brush holder component, without over heating the rectifier. Prior to disassembling, measure the length of the old brushes and must not be more than 0.315 inches and check the brush spring force with a gauge should have a reading of 8.5 ounces at 0.079 inches. In reassembling, insert the brushes in the holder and fasten them with a straightened paper clip. Removal is the opposite of installation which is making sure that the holes of the bolts are aligned and the long bolt is installed at first. Lastly, do not forget to take out the wire holding the brushes together on reassembly. In the case of the rectifier, remove the alternator, decouple the brush holder and rectifier and using an ohmmeter, check continuity on the diodes to determine a shorted diode. Reassembling is done in reverse order so that the wire is pulled out at the end of the process.