The three prongs on the externally-regulated alternator are marked D+, DF, and D-. DF & D- go to the slipring brushes. D+ needs to have a warning lamp connected to it (the alternator receives its initial field flash from ignition-switched power feeding back through the bulb filament). Note that the stock external regulator (C1 in the diagram below) has a blue wire coming out of it that goes nowhere - the blue wire from the warning lamp connects to the RED D+ wire. http://www.vintagebus.com/wiring/1303_USA_from_August_1973-1.jpg
There are 4 pedestals used on carbureted engines from `61 up. 113 101 211 is for the smaller-diameter generators (most 6V Beetle, also 12V 356). 113 101 211B is for the large diameter generators (12V Beetle, also late 6V) with a singleport intake manifold. 113 101 211E is like the 211B but clearanced slightly on the bottom of the saddle for the larger dualport intake manifold. 113 101 211G is like the 211E but the saddle has clearance for the larger alternator housing: http://www.oeveedub.com/mm5/merchant.mvc?Screen=PROD&Store_Code=oe&Product_Code=113-101-211G&Category_Code=bug-charging You can use a 211E for a 211B. You can use a 211G for an E or B. The 211 will clear a DP intake. The 211B can be used on a dualport with dual carbs. Note that the new internal-regulator alternators (AL82) have a couple of ribs cast into the underside of the housing which may need to be filed shorter in order for the alternator to sit down properly in the saddle - when you get one of those be sure to check this BEFORE bolting on the fan, while it's still easy to slip out for clearancing. Both the old "36HP" (30DIN HP) and most "40HP" (34DIN HP) fans have the holes; they were dropped ~1965, I believe just to reduce noise - so all "40HP" and 13/15/1600 singleport fans are interchangeable. The "36HP" and earlier fans had fewer blades. The fans used on dualport "doghouse" shrouds are slightly wider, and won't fit inside a stock 12/13/15/1600SP shroud. --- asad ishaque <[EMAIL PROTECTED]> wrote: > > 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, > > === ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
