AndyW
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| posted on 27/10/13 at 12:50 PM |
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knackered alternator
After a drive out the other night, I noticed a rather loud rattle. Further investigation revealed something inside my alternator. I took the drive
belt off and the noise stopped, spun the pulley by hand and the noise came back. So my alternator is clearly poorly.
Is there any where that anyone would recommend to have them refurbished or is this a waste of money and just buy a new one??
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Ta
Andy
[Edited on 27/10/13 by AndyW]
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big_wasa
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| posted on 27/10/13 at 01:11 PM |
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If the bearings go they grumble If its rattling then you could have just lost a nut, bolt or washer in there.
Take it to bits. 
edit
from the pic I can see there is a piece of casting broken of and missing. Has it fell in ?
Have you used a leaver on it to tension the belt ?
[Edited on 27/10/13 by big_wasa]
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britishtrident
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| posted on 27/10/13 at 01:17 PM |
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Sounds like either the bearing is shot or the pulley is spinning on the shaft.
You really don't want to know how much a brand new unit costs, for this reason rebuilt/reconditioned units are all that are that is
generally available but quality varies enormously.
Those Hitachi alternators generally last for interstellar mileages without trouble so personally my choice would be pick up a secondhand unit clean it
up and fit new brushes.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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ashg
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| posted on 27/10/13 at 05:14 PM |
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I rebuilt my own its pretty simple. Take apart get bearings out, go to bearing shop buy new ones then rebuild, total cost £17, time about an hour.
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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Bare
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| posted on 27/10/13 at 06:00 PM |
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DIY rebuilds are possible .. have done it. But it's Not just bearings that can make failed bearing noises.
Diodes can cause this as well
Also it's clever to insert a fresh VR while at it. Cost of Bits Retail can easily exceed a professional rebuild .. sans the typ 12 month
warrantee :-)
Local Auto Electric shop will rebuild one's Own Alternator for $100 ..same day service.
Although last time (recently) I went with the dead Alternator from my Crap Astrovan .. the cost of a Brand New Alternator was only $10 more.
Dunno why.. but it was a simple decision .
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AndyW
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| posted on 27/10/13 at 08:36 PM |
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quote:
Originally posted by big_wasa
If the bearings go they grumble If its rattling then you could have just lost a nut, bolt or washer in there.
Take it to bits.
edit
from the pic I can see there is a piece of casting broken of and missing. Has it fell in ?
Have you used a leaver on it to tension the belt ?
[Edited on 27/10/13 by big_wasa]
The belt tensioner is on the other side, so no lever o alternator, but good spot warren, had not seen that. I think I will take it to bits and have a
look inside.
Thanks, will post up results......
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