Alternators Rebuilt

[ronmarabito2002]

Just had my alternators rebuilt and I installed them today. The
last unit went out after 1400 miles and we suspected all kinds of
things could have caused it, but it turned out to be very simple, but
probably a one in a million possibility.

After I removed the unit, I found a short between a diode and the
case, which was caused by some unknown object flying up onto the back
of the alternator and selding them together. Unfortunately, I could
not determine what it was, since it was melted. At first I thought the
battery cable might have touched the case, but it did not. Had it
done so, it would have been welded in place and insulation around the
terminal would have melted.

I get amp readings with the switch in the neutral position only.
When I switch to 1 or 2, I don't get an amp reading. I plan to remove
the six relays tomorrow that control the ammeter readings and the
fault light. I might also pull the switch and see if I have good
connections and contacts.

I'll let you all know what I find.

R.E. (Ron) Marabito, Dallas, TX 92WB40