scutter
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| posted on 21/6/08 at 11:43 AM |
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Alt. earthing
A very quick question, Does the Alternator earth through the body of the unit for charge light circuit?
I've a very nice alt bracket which is powdercoated and isolating the alt from the engine and it's earth strap.
Will a small earthing strap from alt to engine fix this problem.
ATB Dan.
The less I worked, the more i liked it.
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mookaloid
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| posted on 21/6/08 at 11:58 AM |
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A bit of wire temporarily fixed to the Alt and the egine block should tell you the answer - it can't do any harm
"That thing you're thinking - it wont be that."
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tks
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| posted on 21/6/08 at 11:59 AM |
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uhhhh....
it will deff need a very good earth..
so i suggest... that you brake locally the surfice...
if it can charge 60amps it needs an earth of 60amps... so depending on the rating of it it will need the earth...
the light doesn't neaad earth because it takes the earth int he dash..and the power from the alternator..
Imagine your charger it has 2 leads to charge your battery... so needs your alternator..
Tks
The above comments are always meant to be from the above persons perspective.
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BenB
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| posted on 21/6/08 at 12:08 PM |
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Or hows about getting a nice big earth strap with "eye" ends. Drill out the eye end to the same size as the alternator adjustor bolt and
put the strap eye under the bolt on the adjuster arm.... Earth the other end to something nice and chunky on the chassis....
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scutter
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| posted on 21/6/08 at 03:06 PM |
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Ok. I agree with everything said except the fact the Alt charge light earths at the dash it earths through the alt and when the alt is charging it
removes this earth so switching off the light.
Time for a big bonding lead.
ATB Dan.
The less I worked, the more i liked it.
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tks
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| posted on 21/6/08 at 06:39 PM |
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quote:
Originally posted by scutter
Ok. I agree with everything said except the fact the Alt charge light earths at the dash it earths through the alt and when the alt is charging it
removes this earth so switching off the light.
Time for a big bonding lead.
ATB Dan.
mhhhh you could be right about that one...
but also wrong...
anyway... it needs earth and a good one 2
The above comments are always meant to be from the above persons perspective.
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02GF74
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| posted on 23/6/08 at 10:46 AM |
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quote:
Originally posted by scutter
Ok. I agree with everything said except the fact the Alt charge light earths at the dash it earths through the alt and when the alt is charging it
removes this earth so switching off the light.
correct.
charge lamp is connected to 12 V at one end, other is at alternator. when alternator is not runing, it earths the lamp so it sees 12 V and thus is
illuminated.
when alt is running, the voltage rise to 12 V - volt drop across lamp is 0 so it goes off.
.... yes, alternator earth is via the body so thcik earhc strap or fat wire is required and try to connect to -ve of battery as directly as possible.
engine/gearbox and chassis should have earth straps too.
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martyn_16v
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| posted on 23/6/08 at 12:37 PM |
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quote:
Originally posted by tks
mhhhh you could be right about that one...
but also wrong...
very zen
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scutter
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| posted on 23/6/08 at 06:03 PM |
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All sorted, yes i had to add an earth strap, see attached pic, it goes between iether end of the Alt. tnesioner. Also helped with charging if the 12V
supply to exite the Alt. was live, a fuse had blown.
All working well now, accord to the MS it's kicking out 13.7V
Cheers to everyone for there help, ATB Dan.
[img][/img]
The less I worked, the more i liked it.
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