Are my alternator slip rings too worn?
- Thread starter lube_n00b
- Start date
I've seen videos where people just clean them up and continue to use them. To me, it looks excessively worn, but I've been wrong before.
One trick is to reverse the wires going to the stator so the current flows in the opposite direction by way of the brushes. Makes no difference to the alternator. This way the ring that wears the most will become switched to the ring that still has the most material.
One trick is to reverse the wires going to the stator so the current flows in the opposite direction by way of the brushes. Makes no difference to the alternator. This way the ring that wears the most will become switched to the ring that still has the most material.
Do what the cheap volume remanufacturers do. Clean then paint the case/outer housing, slap some brushes in it and SEND it..
Actually, sometimes one can buy a new slip ring setup from an alternator/starter supply house and fix it the right way. If it is the OEM alternator, you might want to keep the stator and rotor and rebuild the unit with slip rings, bearings and brushes.
Actually, sometimes one can buy a new slip ring setup from an alternator/starter supply house and fix it the right way. If it is the OEM alternator, you might want to keep the stator and rotor and rebuild the unit with slip rings, bearings and brushes.
There are rebuild kits with nippon denso parts, but I can't seem to find a slip ring for itDo what the cheap volume remanufacturers do. Clean then paint the case/outer housing, slap some brushes in it and SEND it..
Actually, sometimes one can buy a new slip ring setup from an alternator/starter supply house and fix it the right way. If it is the OEM alternator, you might want to keep the stator and rotor and rebuild the unit with slip rings, bearings and brushes.
I found a full rebuild kit here, might go with this route. it doesn't look like too much work to do on the rotor. just need to pull a bearing off
alternatorbrush.com
Voltage Regulator Rectifier Diode Brushes Bearing for 94-97 Accord Odyssey 2.2L
Alternator Rebuild Kit: Regulator, Bearings, Brushes Voltage Regulator C-FR-IG-L Terminals, 14.5 Voltage Set Point; ref# Denso 126000-0940, 126000-1030, 126000-1300, 126000-1700, Honda 31150-P08-013, 31150-PM4-003, 31150-PT2-003 Other IN224, 230-52074, 230-52010, MFVR01850, VRH2005-10 Rectifier...
alternatorbrush.com
Bring to a local rebuild shop. They will let you know and sell you the needed parts or rebuild it for you.
I'd run it. How many miles on the alternator?
car has 298k miles on it and I'm pretty sure this is an oem one, it's a denso alternator.
is there a way to bench test the regulator? the voltage dipped below 12 while the car was running.
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Im not sure if you can bench test just the voltage regulator. Often if the voltage dips low on an alternator that looks like that with worn brushes and a bad slip ring it could be that the contact between the ring and brush is gone and not charging the battery although i would expect the alternator light to illuminate if that happened. Only way i know to test is to run the vehicle and measure the voltage with a multimeter
Depending on the vehicle the voltage regulation might be performed by the ECU. That is why there are so many wires going to that plug. Looks like there are four wires. The regulator in the alternator is a backup and is only used when communication with the ECU is lost. I'm only saying this because replacing the voltage regulator in the alternator could be a waste of time/money. I would look at the wiring diagram for this car.
Honestly, it's not too much work to pull it out and replace it with a new one, I'll just get the slip ring, bearings, and brush assembly and run it. Going to clean up the whole assembly too since it was covered in oil
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