[T2] Bosch alternator with internal regulator

[Al Brase]

Do you believe the internally regulated alternator to be original to 1973?
That was not what we saw here in the US. 73-75 used the 3 wire box. perhaps
the same part as used on the 72-79 type 4 engines.
Al

On Mon, Oct 23, 2017 at 5:07 PM, Robert Mann <robtmann7 at gmail.com> wrote:

>                Bosch alternator with internal regulator
>
>      My early ('73) alternator has the regulator internally, with 1 wire
> thru a hole in the casting at the top front.  I gather Bosch changed design
> surprisingly often, so that some details will vary.   The regulator turns
> out to be a literal black box, sealed, no apparently user-serviceable
> parts, Made in Australia, brand Ingram.  I assume this is a replacement
> part, tho' Bosch had an Australian factory I believe  ...
>
>       The senior auto electrician George had concentrated on VW from
> earlyin the peak region of their air-cooled history.  He has accumulated a
> dozen 36mm nuts!  Visible defects he found included muck impeding the
> spring-loaded brushes, easily cleaned and likely to collect more current
> from the slip rings.  Sure enough, on his classic bench test rig, 50 A is
> delivered, and the discharge warning light goes off at high revs and stays
> off at idle.  On those criteria, we have my problem fixed.  However, the
> copper is largely worn from the slip rings and George thinks they may serve
> only a short mileage.  We wonder if anyone has electroplated new copper
> onto slip rings.  The rotor of which they're a part looks to be removable
> (term 'armature' reserved for generators with those plurry commutators we
> came to dislike  -  not to mention the pesky DC regulators  – vibrating
> iron angle-irons with sparking points).
>
>
> I suppose I could slap on The Samba an illustrated jotting about early
> alternators.  Anyone cooperate in making it much fuller than I can?
>
>
> Robt Mann
> '73 1600dp Devon
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