need HELP: alternator problem

kbogach kbogach" <kbogach@home.com
Sun, 18 Feb 2001 00:29:26 -0500


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I forgot to mention that I have the battery light, breaks light and ABS =
off light are on when it happens.
It looks like I have a nice dialogue with myself :-)
  ----- Original Message -----=20
  From: kbogach=20
  To: quattro@audifans.com=20
  Sent: Sunday, February 18, 2001 12:17 AM
  Subject: Re: need HELP: alternator problem


  Ok, after some thinking and reading I can make more concise and =
concrete questions:
   When I boot the alternator with some initial current (engine runs) it =
kicks on (it always happened before and this time I take the noise as a =
proof of it), but then magnetic field dies (noise disappear). Of course, =
I should've measure voltage instead of assuming that the noise means =
kick on, but...  I think that noise may be result of  changing the load  =
on bearings due to force from created magnetic field on moving =
rotor/electromagnet.  What else can it be?  The only moving part - rotor =
moved before and after the booting procedure. What could kill the EM =
field? If brushes are bad why it starts (consistently)  in first place?=20
  Why I am asking these questions instead of checking brushes first? =
Because I don't have a garage and it is 20 - 30 deg. outside.  I'd like =
to minimize my exposure to that hostile environment. =20

  Thanks.

  Konstantin Bogach.
  200tq '89
  200tqw '89


  ----- Original Message -----=20
    From: kbogach=20
    To: quattro@audifans.com=20
    Sent: Saturday, February 17, 2001 8:20 PM
    Subject: need HELP: alternator problem


    Hi all.
    Today morning when I loaded my 200tq '89 with tools to go to fix and =
pick up my "new" 200tqw '89 (it has no breaks, needs MC)  the alternator =
warning light did not refuse go off, no charging. I had such thing =
before but ... a little of history: when it happened first time I =
cleaned blue wire contact but it did not help. I found that exciter =
current was less than spec. After I gave it a quick "push" from +12V =
(through a bulb, using connection at FL headlight) it started charging. =
I used this method each time it happened (not that often to address it =
more seriously).  But I did not know the main reason.=20
    Today this method did not help.  When I touched + with wire giving =
"push" to the alternator it started to sound like it has bad bearings. =
Sound disappeared in 3-4 seconds. It did it every time I touched the =
terminal.  I am not good in electronics. I have not idea what it might =
be.  I don't have a garage so method of trials and errors is a pain. I =
will appreciate any idea which can help me to narrow my search.

    Thank you.

    Konstantin Bogach
    200tq '89 (jealous one)
    200tqw '89 (did not see its new home yet)

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<DIV><FONT face=3DArial size=3D2>I forgot to mention that I have the =
battery light,=20
breaks light and ABS off light are on when it happens.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>It looks like I have a nice dialogue =
with myself=20
:-)</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A href=3D"mailto:kbogach@home.com" =
title=3Dkbogach@home.com>kbogach</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:quattro@audifans.com"=20
  title=3Dquattro@audifans.com>quattro@audifans.com</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, February 18, 2001 =
12:17=20
  AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: need HELP: =
alternator=20
  problem</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DArial size=3D2>Ok, after some thinking and reading I =
can make=20
  more concise and concrete questions:</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>&nbsp;</FONT><FONT face=3DArial =
size=3D2>When I boot=20
  the alternator with some initial current (engine runs) it =
kicks&nbsp;on (it=20
  always happened before and this time I take the noise&nbsp;as a proof =
of it),=20
  but then magnetic field dies (noise disappear). Of course, I should've =
measure=20
  voltage instead of assuming that the noise means kick on, but...&nbsp; =
I think=20
  that noise may be result of&nbsp; changing&nbsp;the load&nbsp; on =
bearings due=20
  to force from created magnetic field on moving =
rotor/electromagnet.&nbsp; What=20
  else can it be?&nbsp;&nbsp;The only moving part&nbsp;- =
rotor&nbsp;moved before=20
  and after the booting procedure. What could kill the EM field? If =
brushes are=20
  bad why it starts (consistently)&nbsp; in first place? </FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>Why I am asking these questions =
instead of=20
  checking brushes first? Because I don't have a garage and it is 20 - =
30 deg.=20
  outside.&nbsp; I'd like to minimize my exposure to that hostile=20
  environment.&nbsp; </FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Thanks.</FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Konstantin Bogach.</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>200tq '89</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>200tqw '89</FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>----- Original Message ----- </DIV>
  <BLOCKQUOTE=20
  style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
    <DIV=20
    style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
    <A href=3D"mailto:kbogach@home.com" =
title=3Dkbogach@home.com>kbogach</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
    href=3D"mailto:quattro@audifans.com"=20
    title=3Dquattro@audifans.com>quattro@audifans.com</A> </DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, February 17, =
2001 8:20=20
    PM</DIV>
    <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> need HELP: =
alternator=20
    problem</DIV>
    <DIV><BR></DIV>
    <DIV><FONT face=3DArial size=3D2>Hi all.</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>Today morning when I loaded my =
200tq '89 with=20
    tools to go to fix and pick up my "new" 200tqw '89 (it has no =
breaks, needs=20
    MC)&nbsp;&nbsp;the alternator warning light did not refuse go off, =
no=20
    charging. I had such thing before but ... a little of history: when =
it=20
    happened first time I cleaned blue wire contact but it did not help. =
I found=20
    that exciter current was less than spec. After I gave it a quick =
"push" from=20
    +12V (through a bulb, using connection at FL headlight) it started =
charging.=20
    I used this method each time it happened (not that often to address =
it more=20
    seriously).&nbsp; But I did not know the main reason. </FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>Today this method did not =
help.&nbsp; When I=20
    touched + with wire giving "push" to the alternator it started to =
sound like=20
    it has bad bearings. Sound disappeared in 3-4 seconds. It did it =
every time=20
    I touched the terminal.&nbsp; I am not good in electronics. I have =
not idea=20
    what it might be.&nbsp; I don't have a garage so method of trials =
and errors=20
    is a pain. I will appreciate any idea which can help me =
to&nbsp;narrow my=20
    search.</FONT></DIV>
    <DIV>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Thank you.</FONT></DIV>
    <DIV>&nbsp;</DIV>
    <DIV><FONT face=3DArial size=3D2>Konstantin Bogach</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>200tq '89 (jealous =
one)</FONT></DIV>
    <DIV><FONT face=3DArial size=3D2>200tqw '89 (did not see its new =
home=20
    yet)</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>

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