Schrodinger
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| posted on 10/6/20 at 08:45 PM |
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Problems with Alternator
I have been having problems with my alternator, while the engine is running the ignition light seems to go out, however, when in my garage the light
very faintly glows. I realised a while back that there was an earth wire to the alternator which had come adrift. When I changed the oil in my Stylus
I found a sticky 'Goo' on the oil filter just under the alternator and found this:-
 
Alternator
the red area is the 'Goo' and the green area is the source, inside the green circled item is this:-
 
goo
I assume that this is shot and needs replacing. The alternator has no markings on it and came with the car.
Any suggestions welcomed.
Keith
Aviemore
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CosKev3
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| posted on 10/6/20 at 08:55 PM |
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Are some components in alternators oil filled like coils are?
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obfripper
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| posted on 10/6/20 at 09:08 PM |
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That looks like a lucas acr clone, the regulator has overheated and boiled the potting compound.
Starterman on here may know more and can supply a well priced replacement if it's not repairable. If it is an acr, the later a127 type should be
a bolt on replacement with more modern internals.
Dave
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gremlin1234
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| posted on 10/6/20 at 09:42 PM |
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as above, I hope starterman picks this up,
but to quote the paranoid android, 'this terrible pain in all the diodes down my left side'
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Mr Whippy
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| posted on 11/6/20 at 02:39 AM |
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Rather gross looks like it has a bad case of earwax
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nick205
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| posted on 11/6/20 at 06:46 AM |
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Message starterman direct on here and ask him for some advice/help. It may be something he can help refresh for you.
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Schrodinger
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| posted on 11/6/20 at 08:12 AM |
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Can somebody also tell me what terminal B is for?
 
Description
Keith
Aviemore
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nick205
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| posted on 11/6/20 at 08:29 AM |
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Not sure what "B" is for - do you have it connected to anything?
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Schrodinger
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| posted on 11/6/20 at 09:30 AM |
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No there was/is nothing connected. Just wondered what it was for.
Keith
Aviemore
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jollygreengiant
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| posted on 11/6/20 at 10:20 AM |
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quote:
Originally posted by nick205
Not sure what "B" is for - do you have it connected to anything?
30 seconds of search on Google =
Can you use B+ and B+ terminals in alternator?
But if you have both + and B+ terminals then work to the principle that + is the output and B+ is the battery sensing terminal. The B+ terminal can
safely be connected to the output terminal in the alternator plug if you only have output and indicator wires in your harness.
Alternator Terminals
www.mgb-stuff.org.uk/altplug.htm
or
12 rows · Alternator Terminal Identification Chart. TERMINAL TYPICAL FUNCTION; Main Power …
TERMINAL TYPICAL FUNCTION
B+ , 30 Battery Positive
B- , 31, D-,GRD Battery Negative
E Earth - Battery Negative
F, 67 Field/Rotor
or
If there is no '+' terminal on your alternator, but there is a 'B+', then it may well be the output. But if you have both +
and B+ terminals then work to the principle that + is the output and B+ is the battery sensing terminal.
just sayin
JGG 
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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starterman
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| posted on 11/6/20 at 06:30 PM |
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quote:
Originally posted by jollygreengiant
quote:
Originally posted by nick205
Not sure what "B" is for - do you have it connected to anything?
30 seconds of search on Google =
Can you use B+ and B+ terminals in alternator?
But if you have both + and B+ terminals then work to the principle that + is the output and B+ is the battery sensing terminal. The B+ terminal can
safely be connected to the output terminal in the alternator plug if you only have output and indicator wires in your harness.
Alternator Terminals
www.mgb-stuff.org.uk/altplug.htm
or
12 rows · Alternator Terminal Identification Chart. TERMINAL TYPICAL FUNCTION; Main Power …
TERMINAL TYPICAL FUNCTION
B+ , 30 Battery Positive
B- , 31, D-,GRD Battery Negative
E Earth - Battery Negative
F, 67 Field/Rotor
or
If there is no '+' terminal on your alternator, but there is a 'B+', then it may well be the output. But if you have both +
and B+ terminals then work to the principle that + is the output and B+ is the battery sensing terminal.
just sayin
JGG
All new to me. I think I need a new job. Google, the font of all things useless
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Schrodinger
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| posted on 18/6/20 at 07:27 AM |
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All fixed thanks to new alternator from Starterman.
Keith
Aviemore
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