[TR] Alternator not charging battery - 1976 TR6

[dctr6 at optonline.net]

Steve – 

    The brown/yellow wire goes into the harness near the alternator and comes out near the battery.  This is a very original car, despite its’ 175,000 miles, and the wiring harness has not been knackered in the past. We have opened up the plastic casing at the battery end to check the connection in there (thanks for the tip Dave Massey) and all looks OK but will re-check). Thanks.

Dennis 

 

From: Steve Kirby <sackirby at chinaautogroup.com> 
Sent: Thursday, October 1, 2020 5:41 PM
To: dctr6 at optonline.net; 'DAVID MASSEY' <dave1massey at cs.com>; triumphs at autox.team.net
Cc: 6pack at autox.team.net
Subject: RE: [TR] Alternator not charging battery - 1976 TR6

 

Is it possible that the wire running from the Alternator to the Battery has a fusible link in it that has blown?  These are sometimes added as a safety feature.  Not a fuse.  A fusible link.  It looks like a regular wire with a bulge in it at some point.  A fusible link is designed to burn through when subjected to excessive voltage.  They are not repairable, must be replaced.  Check for continuity between both ends of the charging wire.

 

Steve Kirby

President

Austin Healey Association of Southern California

Chairman

Conclave 2021

22831 Avenida Empresa

Rancho Santa Margarita, CA 92688 USA

Direct:  (949) 261-8208

Fax:  (949) 767-5949

Cell:  (949) 903-0957

Skype: steve.kirby29

www. <http://www.austin-healey.org> austin-healey.org

www.conclave2021.com <http://www.conclave2021.com> 

 

From: Triumphs <triumphs-bounces at autox.team.net <mailto:triumphs-bounces at autox.team.net> > On Behalf Of dctr6 at optonline.net <mailto:dctr6 at optonline.net> 
Sent: Thursday, October 1, 2020 2:32 PM
To: 'DAVID MASSEY' <dave1massey at cs.com <mailto:dave1massey at cs.com> >; triumphs at autox.team.net <mailto:triumphs at autox.team.net> 
Cc: 6pack at autox.team.net <mailto:6pack at autox.team.net> 
Subject: Re: [TR] Alternator not charging battery - 1976 TR6

 

Dave – 

    We checked that connection and it was clean and tight.  We are STILL not getting any voltage from the alternator to the battery.  We walked through the procedure in Dan Master’s book 3 times and every time, it points to a bad alternator which I had tested and it’s putting out over 13 volts (maybe not enough but more than 12). Why doesn’t this show up at the battery?

We even tested at the back of the alternator and it only shows 12 volts (?). 

Dennis 

 

From: DAVID MASSEY <dave1massey at cs.com <mailto:dave1massey at cs.com> > 
Sent: Wednesday, September 30, 2020 5:31 PM
To: dctr6 at optonline.net <mailto:dctr6 at optonline.net> ; triumphs at autox.team.net <mailto:triumphs at autox.team.net> 
Cc: 6pack at autox.team.net <mailto:6pack at autox.team.net> 
Subject: Re: [TR] Alternator not charging battery - 1976 TR6

 

On the 76 TR6 (well all the CF series cars) the alternator output (brown) wire connects to the power tap on the positive battery positive cable with a 3/8 QC connector.  If this connector is not making good connection even a good alternator will not charge the battery.  Check that out before you spend any more money.

 

Dave 

 

 

-----Original Message-----
From: dctr6 at optonline.net <mailto:dctr6 at optonline.net> 
To: triumphs at autox.team.net <mailto:triumphs at autox.team.net> 
Cc: 6pack at autox.team.net <mailto:6pack at autox.team.net> 
Sent: Wed, Sep 30, 2020 11:03 am
Subject: [TR] Alternator not charging battery - 1976 TR6

   Here’s a synopsis – Almost new battery went dead. Charged battery and took car to shop. Meter shows alternator is not charging battery (only 12 volts, not 14.6 as per Dan Master’s book). Buy rebuilt alternator and the same thing happens.  Swap alternator for a second rebuilt unit – same thing, battery is not being charged. Tried 3 different meters – all showed 12 volts.  Hard to believe I got 2 bad rebuilt alternators.  What’s wrong??

Dennis Culligan, 1976 TR6 

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