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Battery Light Question (common issue)

Discussion in 'VN - VP Holden Commodore (1988 - 1993)' started by vp manual wagon, Jul 31, 2006.

  1. Well, I'm sure all commodore owners with experience know that the battery light coming on is a common issue, and its to do with the alternator, I was told by an RACV guy that all that usually needs to be changed is the alternator brushes...... is this an easy task? Where do I get alternator brushes from, and how much will it cost me? Help would be Much appreciated and I'm embarrased to say that I haven't done anything about it for like....6 7 months now lol..... Bloody poor tafe student!:bang:

    -Thanks, -Dave
     
  2. s_pack

    s_pack New Member

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    Bearings isn't too hard a job, trying to rememember now (haven't done it in ages) but yeah, rip the alternator out, pull it to pieces, and you'll see. Pretty hard to go wrong, it all only goes back together one way. And yeah, can pickup bearings from sprints or whatever auto shops you got down that way nice and cheap.
     
  3. coolvxss

    coolvxss New Member

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    He wanted the brushes replaced didnt he??? My dad changed his brushes in the alternator a while back in his HG kingswood. Im guessing its about the same. Just have to pull apart alternator and slot in the new brushes. Well thats on a HG i dono bout a VN. They are also cheep. Got them at autopro.
     
  4. commy92

    commy92 New Member

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    so so so easy to do. you basically unbolt the pully. ip the bearing out of that and replace. Rip the centre out of the alt then replace the bearing and bush in that. Check the weavey stuff cant remember its name. Make sure its not short circuited out you will be able to tell caues it will be burnt and stuff. I think thats all of it then just bolt it back together. Chuck it on and bob is your uncle
     
  5. Full Spectrum

    Full Spectrum Bro it's a VW your Audi!

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    Myn is going on and off some times, Does yours ever make the dash light up 4 times brighter? Myn has caused a blown driving light.
     
  6. fu2

    fu2 The Man With No Name

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    the but you want to replace is at the back of the alternator.
    take it off and on the back it like a cap which by memory is held on by 2 screws. open that up and pull it out and replace it. easy job
     
  7. s_pack

    s_pack New Member

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    My mistake, seems like you would be replacing the regulator, not the bearings.. The regulator is the black thing on the back, basically it has brushses that come into contact with a pair of slip rings that are on the end of the rotor. These brushes wear down over time, sometimes unevenly too, so basically they end up having **** contact and will cause your battery light to come on. New regulator should fix the problem,
     
  8. Demons1964

    Demons1964 Member

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    As above. Probably regulator bushes worn too far, or the regulator itself is kaputski.

    Directions: Disconnect the battery and unscrew the regulator & brush assy from the rear of the alternator. Check the travel length of the brushes (minimum is supposed to be 4mm but it can start failing well before then - mine started giving trouble at 7mm travel). Check the condition of the solder joints as well. New brushes are less than $10 if you can solder them yourself, or a new Bosch regulator/brush assy is about $40.


    Mark.
     
  9. Thanks guys, help is much appreciated, the light flicks on and off and the headlights dim too, so I I'll get new a new regulator etc,

    thanks :thumbsup:

    -Dave
     

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