Jay
I'm not the electrical guy so I maybe wrong here.
I have never seen a flat diode. They are cylindrical with a band mark for
the - side, I believe.
If there is a number on the component Google it to see what you have.
My first guess is you have a condenser or capacitor.
Capacitor goes parallel to the points
Diode goes parallel to the coil
That uses up just about all my electrical knowledge; hope it helps.
Ron Fraser
-----Original Message-----
From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
On Behalf Of Jay Laifman
Sent: Saturday, April 14, 2012 10:30 AM
To: tigers@autox.team.net
Subject: [Tigers] SU Fuel Pump Electronics HELP
When I took apart my SU fuel pump, there was a large orange cylindrical
electronic piece that was parallel to the points (obviously my dad would
know instantly if this is a resistor or a condenser). So, one end was
attached to the points ground the other end was attached to the points
power.
The rebuild kit came with a replacement that was not a large cylindrical
piece but a small flat round piece. Still with two wires.
The exploded picture of the fuel pump from the parts list shows a single
wire condenser.
The instructions with the SU rebuild kit says:
"Where a diode resistor is fitted it is in parallel with the coil
connections. This component is polarity conscious and therefore all
connections must be correctly made. A condenser, where fitted, is not
polarity conscious."
Here are my questions:
(1) I am assuming that both of these are diode resistors. Is that correct?
(2) The instructions say across the coil. But the way it was assembled was
across the points. Which one should it be?
(3) How can I determine the polarity of the flat diode I have? I will say
that the soldered on ends have different sized holes and the mounting posts
are different sizes. So, it really only can go one way. So, if it is
supposed to go across the points, it will go one way, if it is supposed to
go across the coil, it will mount another way. Also, not only do the
soldered on ends have different sized holes, they are bent up so actually
they only really want to go across the coil, like the instructions say.
But, I'm concerned because the way it was assembled was across the points.
THANKS!!!
Jay
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