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replace older alternator w/ new style?? 200 78

posted by  someone claiming to be Gordon Hull on  Thu Feb 15 09:55 CST 2001 [RELATED]

I have a 78 242 with the older external regulator alternator. (55A)

The cost to repair it is more than a used newer 70A internal regulator Bosch alternator -actually I have one rebuilt off of one of my parts cars.

Can I use the newer model on the 78?

Do I have to rewire anything??

What do I have to watch out for??

Thanks in advance

Gord Hull







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    Thanks All... 200 78

    posted by  someone claiming to be Gordon Hull on  Thu Feb 15 23:53 CST 2001 [RELATED]

    Yes Carl, this is my 2nd alternator in 2 months (2 different cars).

    As far as just replacing the brush/regulator unit, the electrical shop said that the "tri-diodes" (something like that) were probably the problem and the parts alone were more than picking up a used alternator.

    Thanks for the info, the shop rebuilt the 80 amp alternator , new bearings, brush/regulator, and replaced some kaput diodes, for something around $100 CDN ($65 USD).

    So for that amount, I have a good as new unit.

    (It is amazing how far one can get with just a battery charger and a good battery under the hood, supplying power.)

    Happy Brikken

    Gordon Hull







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      Re: Thanks All... 200 78

      posted by  someone claiming to be carl krall on  Fri Feb 16 12:08 CST 2001 [RELATED]

      That's okay, I can read between the lines. How much is California paying you to make power with your Volvo? Maybe I'll do it too.







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    Re: replace older alternator w/ new style?? 200 78

    posted by  someone claiming to be bob on  Thu Feb 15 20:39 CST 2001 [RELATED]

    Bolt it on. Large red wire is same as old unit. Throw away the regulator and harness. Plug small red wire on spade terminal.







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    Not again!!! You must be power-hungry...&^) nmi 200 78

    posted by  someone claiming to be carl krall on  Thu Feb 15 16:38 CST 2001 [RELATED]

    nmi







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    Re: replace older alternator w/ new style?? 200 78

    posted by  someone claiming to be BC on  Thu Feb 15 11:37 CST 2001 [RELATED]

    Before you spend a ton, you may be able to do this: Take the alternator to the parts place (dealer or ??) and see if the brush set that contains the built-in regulator will fit. Try B4 you buy, and electrical parts are usually not return-able. I think I did this with my 1979 B21f. Good Luck, Bob.







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    Re: replace older alternator w/ new style?? 200 78

    posted by  someone claiming to be dick on  Thu Feb 15 10:09 CST 2001 [RELATED]

    You can replace it with no problem---did it on a 78 I owned. No particular changes required.

    dick






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