[Mg-t] TD Charging Problem

[S Allen]

Hi,

I'd like to thank everyone for their kind and considerate replies in regards
to the charging problem on my TD.  With the generator isolated I have less
than a volt on it, which is pretty definitive. 

Some time this week I'll take it off the car and go over it on the workbench
and see what can be done.

Thank everyone again,

Scott Allen

52TD
74 1/2 BGT

--- On Thu, 11/12/09, Bob Howard <mgbob at juno.com> wrote:

From: Bob Howard <mgbob at juno.com>
Subject: Re: [Mg-t] TD Charging Problem
To: s4usea at yahoo.com
Cc: mg-t at autox.team.net
Date: Thursday, November 12, 2009, 3:15 PM

Hi Scott,
   You may not need to flash the generator, but it's something that is
easy and does no harm. 
   Checking the wires at the regulator tells you condition of both gen
and wires. At the gen, it tests gen only.  You can do whichever is easier
for you as it's unlikely that the wires have perished.
   For polarity, you would ground to Pos if the car is still earthed as
it was built ( Pos earth)  If it has been changed to Neg earth, then
ground the voltmeter to the neg wire.  Voltmeter should show the voltage
either way though, pos or neg, but voltage should be indicated.
    Changing from pos to neg or back to pos is when you do need to flash
the generator.  It gens equally well with either polarity, but flashing
tells it which is which.   
    While you're sleuthing around at this, slide back the cover band on
the dynamo and look at the brushes.  They may be worn and not making good
contact. Weak then no charge can be that they were just worn down, then
worn out. 
Bob

On Thu, 12 Nov 2009 10:28:07 -0800 (PST) S Allen <s4usea at yahoo.com>
writes:
> My thanks to everyone for their replies.
>
> I don't think the generator needs to be flashed as my father drove
> the '52 regularly while I was overseas, to include picking me up at the

> airport the week before.  At that time, when I drove it home from his
house to
> mine in the dark I noticed the charge light glowing faintly regardless
of the
> rev range and wrote it off to it being dark and me running the heater.
A few
> days later when I hopped in it was full-on red for the whole drive.
>
> After digging out my manual from the basement, (thanks Charlie) it
> says to connect a wire to the (removed) D and F wires on the Reg.
Dave's
> helpful article says to test both at the Gen's terminals and the Reg's
D and
> F.  Is there a consensus on this?
>
> Also, the manual says to test using the pos wire as ground on the
> volmeter, (I have a digital).  Is this true?
>
> Again, thank you for all of the replies.  Now I have to figure out
> why the dizzy on my BGT doesn't have any spark...
>
> Thank you again,
>
> Scott Allen
>
> 52 TD
> 74 1/2 BGT
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