[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: Repairing tachs & electronic speedos?
On Wed, 12 Apr 1995, Steven Buchholz wrote:
> There have been some discussions of late about faulty speedos & tachs. Has
> everyone simply replaced the part and set the faulty part aside, or has an
> attempt to repair the thing been made? As long as the meter movement is
> intact it should not be a major problem to repair the things. Has anyone
> tried to have a VDO repair outfit fix them?
>
I am probably the cheapest SOB out there, so I always try to fix it
myself first. Cant break it worse, right? (Well, actually I have, but we
wont get into that right now...:) Here's the story with my tach, which
makes it impossible to fix.
I was getting the tach pulse to the unit, so that narrowed it down to the
head unit. I took some readings off the unit to the galvinometer. They
were getting there, which narrows it down to the galvinometer. I ripped
it apart and took some readings. As I suspected, the field was open. :(
The field in this case is the typical 400 million gage wire which is an
air core coil (apparently wrapped around a square form, then removed)
Each end of the 'coil' then went to each end of the spindle of the motor.
These ends, literally burned off for some reason.... a weakness in the
wire or shellac I would assume. So now I have this micro fine coil with
ends that disappear SOMEWHERE into the windings. I looked with a loupe, a
microscope, no way no how am I gonna find them
The car is going soon, and I wanted to make sure it is perfect, so even
if I 'fixed' it, I would have replaced it.. now knowing how long it would
last again. But it was personal at that point, I HAD to fix it. Needless
to say, it has since been recycled, and a NEW one installed. (lots of POM).
I got another one for $200, and I was getting quotes of $150 to $175 to
fix it and it would take 3-6 weeks. Easy decision! :)
Bob
----------------------------------------------------------------------
>>>>>>>>>>>>>>>>>>>>>>'69 Mustang for sale!<<<<<<<<<<<<<<<<<<<<<<<<<<<
----------------------------------------------------------------------
Bob D'Amato |Information and Technology Center
Southern New England Telephone |
Voice: 203-771-7081 |mx@starfleet.itc.snetlink.com
Fax: 203-773-3398 | or
Pager: no Way!!!!! |bob.damato@starfleet.itc.snetlink.com
http://starfleet.itc.snetlink.com/deltat.html
----------------------------------------------------------------------