Thanks Mike for the detailed response.
Yes Ive had problems recently. Have posted all in this post only. To
summarise a battery suddenly dying on me without clues. Everything looks all
right in the charging system which has been working fine for the last 10 years
on my dub. The system has a non VW charging setup.
We can have a free charge test which I have already had done. The car
passed with no issues. So now I think I should replace the regulator. I plan to
put in a post 73 VW altrnator soon. It is all cleaned and ready to go in.
One question. I have seen two types of fans. One has a series of punched out
circles near the centre. I guess this is done to lighten the unit. I got a
solid fan with the alt.
The alt itself seems to be a Bosch unit but its missing its sticker/ID
plate. The terminals are marked DF, D+ and D-. A fourth unmarked one accepts a
circular clip which has to be tightened on by a nut.
We only get Japanese and Chinese aftermarket regulators here. No Bosch
units available now. I do have a second hand unit which is supposed to be
working but I see the cover has been off and the internals probably fiddled
with. So I guess a safer approach is to go for the best quality brand new unit
available.
I also have a complete spare engine which comes with a different kinda alt
which has the solid state built in regulator. Havent touched it as yet.
The pedestal does look as if its been cut but I guess its the genuine cut as
its quite a good job! Have inspected it closely and there are no chances of
leakage of oil.
Thanks,
Asad
> From: [EMAIL PROTECTED]> To: [email protected]> Date: Mon, 28 Apr 2008
> 06:22:15 -0400> Subject: Re: [vintagvw] Starting probs in my 68 bug.> >
> Asad,> > It seems as if you have encountered problems, haven't you? Here in
> the US > we can drive a car to the FLAPS, and request that they run a free
> charging > system test. Is that available to you? If so, have the people who
> sold you > the battery, check your charging system (with the battery still in
> the car) > to determine the source of the problem. If not, then yes, try
> replacing > the voltage regulator under the back seat.> But first, realize
> that different charging units require different VR's;> The 6V generator, 12 V
> generator, and both Bosch and Motorola early and > later-type alternators all
> use different VR's, and one of the alternators > doesn't use an external one
> at all! (it has an internal one that's built > in). One of these alternators
> even has the VR mounted on top of it, like > the old 6v generators. Which one
> do you have? Is the VR the correct one > for it? They made points, type as
> well as solid-state VR's, also, so you do > need to match the VR to the
> charging unit you're running. How many > connections are on yours, and what
> are they labelled? What is the Make and > PN of your unit?> Yes, the correct,
> original alternator pedestal has a 'cutout' area on the > rear side to clear
> the larger outside diameter of that area of the > alternator. By your
> description, it sounds like someone clearanced an old > generator pedestal
> for your alternator, which I've never heard of, and may > result in an oil
> leak from it..> > Mike B.> > ----- Original Message ----- > From: "asad
> ishaque" <[EMAIL PROTECTED]>> To: "Air-Cooled Volkswagen Discussion List"
> <[email protected]>> Sent: Monday, April 28, 2008 5:29 AM> Subject: Re:
> [vintagvw] Starting probs in my 68 bug.> > > > Hello all,> > The battery has
> been put in brand new less than a month ago. Problem is > the car is not
> giving any problems as far as starting in the mornings and > operation with
> headlights on is concerned. The battery is still under > warranty but
> unfortunately here the criteria for returns is if you encounter > any
> problems, not the fact that the battery reads low.> > I shall discuss this
> with the battery guy. Lets see if he agrees to > replace the same, which I
> doubt highly.> > Couple of more things. I am hearing some occasional 'pops'
> from under the > rear seat while driving. It sounds like strong sparking.
> Have checked the > terminals and both are nice n snug. Maybe its from within
> the cutout??? It > had looked good when I had inspected it a few weeks back.
> The sound is very > very occasional, therefore I am unable to investigate it
> while driving. I > discussed with my brother Suleman and he said it might be
> arcing somewhere. > This may have in fact be what caused my last battery to
> go bad all of a > sudden.> > I think a sensible approach (tho a shot in the
> dark) may be to replace > the cutout with a brand new unit. What do you guys
> say???> > Second querry is regarding the Alternator pedestal. The one I got >
> *seems* to have been cut from the rear portion (rear of the car/engine). >
> Maybe this was done at the factory to help clear the large collar sort of >
> flare in the housing? Or maybe its a cheap solution to get around buying the
> > correct pedestal?> > How do the alt and gen pedestals differ from each
> other?> > All input and thoughts are welcome and appreciated.> > TIA> > Asad>
> Karachi, Pakistan.> > > > From: [EMAIL PROTECTED]> To:
> [email protected]> Date: Fri, 18 > > Apr 2008 10:27:46 -0400> Subject:
> Re: [vintagvw] Starting probs in my 68 > > bug.> > Bad battery. Any 12V
> battery should read AT LEAST 12V at it's > > lowest. > Any reading less than
> 12.0 is bad. If charging system is working > > properly, > and car is driven
> long enough (20+ mins) to charge a low > > battery, the batt > voltage will
> come up to or over 12V. If it doesn't, > > it's bad. 12.5 to 12.8 > is closer
> to normal foe a healthy battery.> > > > Mike B.> > ----- Original Message
> ----- > From: "asad ishaque" > > <[EMAIL PROTECTED]>> To:
> <[email protected]>> Sent: Friday, > > April 18, 2008 10:25 AM>
> Subject: Re: [vintagvw] Starting probs in my 68 > > bug.> > > >> > Guys,> >>
> > I did check out the voltages. The initial > > voltage at the battery > >
> terminals before starting was 11.68 volts which > > I think is a bit on the >
> > lower side. On starting the voltage does climb > > up to over 12 volts and
> > > goes around 14 volts on revving.> >> > This > > weekend I may go around
> changing the alternator, saying goodbye to > > the > > 'modified charging
> system'. That would be sweet!> >> > Might need help as > > far as the
> connections go. Dont think there would > > be much to worry as > > my current
> non-VW generator has four connections like > > the VW alt has. > > One
> connector with three terminals and one round clip > > which fits onto > > a
> stud connector. The VW unit has a three pin connector > > plus a stud > >
> connector. Guess I just have to figure out where the three > > connections >
> > should go.> >> > Would be consulting the tech manuals and doing a bit of >
> > detective work > > under the rear seat to get clues.> >> > Just wait for >
> > my shout if I get stuck anywhere!!> >> > Regards,> >> > Asad> > Karachi, >
> > Pakistan.> >> >> Date: Wed, 9 Apr 2008 19:00:28 -0500> From: > > [EMAIL
> PROTECTED]> To: > >> [email protected]> Subject: Re: > > [vintagvw]
> Starting probs in my 68 > >> bug.> > Hi, Asad,> > If your > > voltage
> regulator is working, the alternator > >> should top out > around > > 14 -
> 14.5 volts after you reach the RPM that the > >> alternator can > > >
> actually generate at. If the voltage keeps climbing with > >> RPM, > >
> something > is wrong, and you will end up boiling the battery dry > >> > >
> after a few days.> > Chuck Kuecker> > asad ishaque wrote:> > Guys,> > > > > >
> > >> Here is the progress I have to report. > > > > Got a new battery. Its >
> > > >> rated at 65 Ampere Hours. Its in the bug and Im having no probs. Have
> > > > >> taken a drive to work in the dark and the bug performed normally.> >
> > > > > > >> However, I find that the readings I take from the voltmeter
> after > > having > >> a drive are still in the range of around 11.90 Volts. I
> dont > > think thats > >> healthy as some have already pointed out. The
> readings > > with the engine on > >> and at idle are in the range of 12.50
> volts. On!> > > > revving it goes to above 14 volts. Havent revved it really
> hard but I > > > > think it would go upto 15 volts.> > > > Got the car
> rechecked by the > > > > battery shop guy. He took some readings with his
> voltmeter and said all > > > > was well. > > > > Any checks or readings I
> should take and report > > here???> > > > > > i have to install the VW
> alternator soon. The new > > battery has a full > > guarantee for the month
> of April, then it would be > > part exchange till five > > more months. I
> should be doing all > > experimentation in this period!!> > > > > > Thanks to
> all.> > > > > > > > _______________________________________________> > >
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