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(ET) e-15 eats reverse relays
- Subject: (ET) e-15 eats reverse relays
- From: "Pieter Litchfield" <plitch attglobal net>
- Date: Fri, 7 Jun 2002 20:24:37 -0400
- Importance: Normal
- Sender: owner-elec-trak cosmos phy tufts edu
My e-15 w/bucket loader has a nasty habit of eating the reverse relay - it
welds or fries the contacts while in reverse, or when switching from
to forward modes. Over the past several years it has eaten 3 or 4.
I am now using the improved Bill Gunn relay, and while definitely stronger,
the tractor's demon is stronger still.
I had assumed that perhaps the motor of a rolling tractor acts as a
generator and that shifting too quickly from reverse to forward might allow
the motor to weld contacts (or something). I do notice a spark when the
rely breaks contacts with the reverse contacts if I shift it without the
motor coming to a standstill, even with the tractor in neutral. No spark
seems to occur when the motor is completely stopped. However, this could
just be coincidental with something else - like a component that looses a
charge over a short time.
I do have the complete "homeowner's repair manual", but I ain't no
so I look at the pretty pictures of wires and remain more or less clueless.
I'll ask Bill when I order more relays, but does anyone else want to
a suggestion as to why I eat relays?