Re: Alternator Field wire hookup '70 duster
[Re: W5Duster436]
#79608
06/25/08 08:33 PM
06/25/08 08:33 PM
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Joined: Jan 2003
Posts: 815
Alexandria, NJ
WayneM
super stock
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super stock
Joined: Jan 2003
Posts: 815
Alexandria, NJ
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Sounds like you got a single field alternator for '69- down. I'm not sure if it'll work.
2014 Durango R/T
2004 Dodge Ram 3500 SRW SLT short quad Cummins 6 speed
1998 Dodge Durango SLT 5.2
1971 Plymouth Duster-
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Re: Alternator Field wire hookup '70 duster
[Re: W5Duster436]
#79610
06/25/08 08:40 PM
06/25/08 08:40 PM
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Joined: Jan 2003
Posts: 815
Alexandria, NJ
WayneM
super stock
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super stock
Joined: Jan 2003
Posts: 815
Alexandria, NJ
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Sounds like you can take the ground wire off and hook up your 2 field wires.
2014 Durango R/T
2004 Dodge Ram 3500 SRW SLT short quad Cummins 6 speed
1998 Dodge Durango SLT 5.2
1971 Plymouth Duster-
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Re: Alternator Field wire hookup '70 duster
[Re: WayneM]
#79611
06/25/08 08:42 PM
06/25/08 08:42 PM
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Joined: Jan 2003
Posts: 4,084
Indiana
W5Duster436
OP
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OP
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Posts: 4,084
Indiana
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Quote:
Sounds like you can take the ground wire off and hook up your 2 field wires.
That's what I was thinking. I ordered a brush set and hopefully for 5 bucks it will come with a brush with an isolator and a 1/4" tab to hook the other wire to and then it will ground through the regulator itself. At least this is how I perceive it to be. After looking at it now though I don't know if it's possible as the brush has a small hole to go in and I don't know how the isolator would fit.
One set of brushes goes in from the side and the other rides on top of the stator I guess.
Advance auto is screwed up because they say this is the same alternator listed for 70-71 dusters. I told him to look up my cuda and it came up with the same part number too. Unbelievable. The one I have is definitely a "round back" alternator. I guess I need the square back alternator.
Looks like a trip to Napa tomorrow. Maybe even autozone has the correct one for my car. Anybody know autozone pn for the square back alternator with single pulley?
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Re: Alternator Field wire hookup '70 duster
[Re: W5Duster436]
#79612
06/25/08 09:18 PM
06/25/08 09:18 PM
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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They probably looked it up right.
I bet what happened is the guy making $3/hr at the rebuilding factory, wasn't sure which box it went in, so you got the wrong one.
Even if you could make that one work, you wouldn't want to. The early single lead ones didnt have much in the way of output.
In any case, if you ask for one for a newer application you can get up to 78 amps in that same case.
Specify something like an early 80's dodge van with a 318, and a single groove pully alt.
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Re: Alternator Field wire hookup '70 duster
[Re: dave571]
#79615
06/25/08 09:24 PM
06/25/08 09:24 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
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Posts: 25,200
Upper Midwest
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1970 should have used the dual field alternator and regulator. Yours has had one feild grounded so that the alternator can be used with the 69 and down charging system that used a single field system. Check this out in the archieves:: http://www.moparts.org/Tech/Archive/elec/21.html 
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
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Re: Alternator Field wire hookup '70 duster
[Re: MoparforLife]
#79618
06/25/08 11:00 PM
06/25/08 11:00 PM
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Joined: Jan 2003
Posts: 4,084
Indiana
W5Duster436
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OP
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Joined: Jan 2003
Posts: 4,084
Indiana
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Quote:
Back up here a minute - have you got a 70? If so you need teh alternator you have with the 2 brushes. It has had nothing more done the way I read this than the 'pig tail' to the one brush grounded instead of going spicing into the keyed wire. Extend this wire and got where it belongs and use the proper regulator. Put in brushes if you feel they are needed. Not a very hard job and cheap to do. That is provided that the other wiresgoes to a regulator. do you have the electronic regulator as with the terminal as pictured. A 70 should have this one.
Don, I do have the correct regulator and it is a '70 and the only way I could do this is to put a brush kit in that has the spade for the second fld with an isolator to keep it from grounding on the alt itself. I had advance order a brush kit but in looking at the one at autozone and this one it doesn't look to me like the brush kit would fit correctly for this second spade.
I'll just get the correct one from Autozone and then return this one to advance auto. I am sure they'll refund me as I should have it in the system and it's never been used yet. Although I did throw the box away. I can also go in and see if the brush kit will do what I want and take the autozone one back too. Either way it's a wash, just too bad I had to go through all of this and I should have checked from the get go. I got the alternator quite some time ago in preparation.
it sounds to me like some one grounded the one brush in order to use the alternator on a single brush system as in 69 and down using the small rectangle box regulator.
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Re: Alternator Field wire hookup '70 duster
[Re: W5Duster436]
#79619
06/26/08 01:14 AM
06/26/08 01:14 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Part of the problem with the early/ late alternators is the rebuilders themselves. Some of the rebuilts started coming through, back in my day, as "early" shells that had been drilled for an aftermarket brush to add an insulated brush, thus converting them to "late".
ON THOSE TYPE UNITS you cannot put "stock" ungrounded brushes in the one "added" brush
My recollection is that you can't "convert" one to the other by swapping brushes--my recollection is that the original '69-earlier grounded brush fit a "different" way in the shell, and likewise, the late brush holders won't fit both positions in the early shell
I agree with dave571--"outsmart" the parts guy by looking up a much later unit.
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