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Thread: alternator problems 300tdi

  1. 14th December 2011, 07:22 AM #1
    weeds's Avatar
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    alternator problems 300tdi

    hi guys

    the battery light came on on the way to work this morning

    its a 300tdi defender with 100amp disco alternator fitted

    alternator is only a few years old, i have check/wiggled the wiring with no luck, measures 12 volts at alternator when engine is running, 12V at battery with engine running, 12V at alternator when i turned the engine off

    i tapped the alternator a few time with mag light...still no go

    can the alternator be overhauled or am i up for a new one??

    its my daily driver
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  2. 14th December 2011, 07:36 AM #2
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    yes, it can be but unless you have a tamed sparky its quicker (and IMHO more cost effective to just drop in a replacement one then DIY rebuild the old one as your spare.
    Dave

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  3. 14th December 2011, 07:46 AM #3
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    Quote Originally Posted by Blknight.aus View Post
    yes, it can be but unless you have a tamed sparky its quicker (and IMHO more cost effective to just drop in a replacement one then DIY rebuild the old one as your spare.
    thanks dave.....assumed so
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  4. 14th December 2011, 07:53 AM #4
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    Blame the snake!
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  5. 14th December 2011, 07:54 AM #5
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    i was blaming the new springs and shocks i installed on the weekend......forgot about that damn snake
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  6. 14th December 2011, 10:11 AM #6
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    At the start of the year the rectifier in 110 alternator died. My auto electrician was talking ~$240 to overhaul the whole thing with new bearings, etc, but suggested a new 65A one for $220. I took the new one but regretted it pretty quickly. It takes a bit of revving on start up to get the charge light to go out and it looks and "feels" far inferior to the 100A one I bought from Paddock Spares shortly after (for less than the cheap one of course).


    James.
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  7. 14th December 2011, 11:12 AM #7
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    Quote Originally Posted by rainman View Post
    At the start of the year the rectifier in 110 alternator died. My auto electrician was talking ~$240 to overhaul the whole thing with new bearings, etc, but suggested a new 65A one for $220. I took the new one but regretted it pretty quickly. It takes a bit of revving on start up to get the charge light to go out and it looks and "feels" far inferior to the 100A one I bought from Paddock Spares shortly after (for less than the cheap one of course).


    James.
    i would have loved some warning so that i could have brought one in from overseas.......

    i now have one on the way from M.R. just need to fit it at work so we can shoot across to rock climbing
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  8. 14th December 2011, 11:16 AM #8
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    Quote Originally Posted by weeds View Post
    i would have loved some warning so that i could have brought one in from overseas.......

    i now have one on the way from M.R. just need to fit it at work so we can shoot across to rock climbing
    Damn. You could have always borrowed Captain Snooze's alternator while you wait. His Defender is never running .


    James.
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