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Anton CH.
01-05-2008, 12:36 PM
I took apart my alternator today. The brushes are probably at their 5mm mark about now. They created a pretty big groove in the alternator.

The alternator is a Valeo made one, the new voltage regulator that I received will not fit into the Valeo unit. I can't find a Valeo replacement regulator.

aston_jag_tech
01-05-2008, 12:50 PM
Can you buy the brushes separtely????? Thats all you need I bet

Anton CH.
01-05-2008, 02:03 PM
Can you buy the brushes separtely????? Thats all you need I bet
BMA nor Autohausaz has them. I checked the brushes are different size from the Bosch ones.

CharlesAFerg
01-05-2008, 02:22 PM
I think my alternator is noisy, anyone have an audio clip by chance of a working alternator from and m20 or m30 car?

Anton CH.
01-05-2008, 04:05 PM
Is it a problem that there are groves on the contact?

shogun
01-06-2008, 12:50 AM
I never heard the alternator when engine is running. How to make an audio clip of that alternator running with engine running?
For brushes, there are specialized companies which sell brushes only, any type, size you want.
Contact one of these companies

Custom Rebuilder of Starters, Alternators and Generators

Doing it yourself? We sell parts.

BUSHINGS, BEARINGS, BRUSHES, BRUSH SPRINGS, SOLENOIDS, ARMATURES, FIELDS, STATORS, ROTORS, GENERATOR KITS, STARTER KITS, VOLTAGE REGULATORS, THREW BOLTS, SHIFT FORKS, BRUSH HOLDERS AND MORE!

http://stores.ebay.com/Triodiode-DC-Electric-And-Tractor_Brushes-Holders-Leads_W0QQcolZ2QQdirZQ2d1QQfsubZ19QQftidZ2QQtZkm

http://search.ebay.com/search/search.dll?sofocus=bs&sbrftog=1&dfsp=1&from=R10&_trksid=m37&satitle=valeo+alternator+brushes&sacat=-1%26catref%3DC6&fmmk=&fmmd=&fylo=&fyhi=&mppfqy=valeo+alternator+brushes&sargn=-1%26saslc%3D2&sadis=200&fpos=ZIP%2FPostal&sabfmts=1&saobfmts=insif&ftrt=1&ftrv=1&saprclo=&saprchi=&fsop=1%26fsoo%3D1

http://search.ebay.com/search/search.dll?from=R40&_trksid=m37&satitle=alternator+brushes&category0=

Claude
01-06-2008, 08:03 AM
Is it a problem that there are groves on the contact?

Not really as long as those groves are not source of contact between the rotor segments (look at that visualy and if you can check with an ohm-meter if there is continuity or not between adjacent segments).

whiskychaser
01-06-2008, 10:31 AM
Not really as long as those groves are not source of contact between the rotor segments (look at that visualy and if you can check with an ohm-meter if there is continuity or not between adjacent segments).
Bear in mind that carbon stuck in the groves may also conduct across the segments. I'd clean the groves out with a small screwdriver -careful not to scratch the com and dont go mad. And get any black (carbon) off segment faces with very fine glass paper, cleaning in the direction of rotation. Wipe down with meths. If it works great. If not, no harm done