|
Hi Dean,
I assume you’ve verified that Pad 4 isn’t putting out voltage when you
enter speed 1. If it is, then there is a broken connection somewhere between
Card 1 and the L contactor.
If not, make sure pad 6 on the Card 1 is getting 36V when the speed
selector is in neutral. This is required to ‘reset’ the SCR. If it is getting
voltage at neutral, I would suspect capacitor C2 (20uF @50V), SCR 102, or a
broken lead or trace on the board.
I had a similar problem with the PTO on my E15 when I first got it, and it
turned out to be a bad SCR.
Nick
Sent: Thursday, July 22, 2021 1:22 PM
Subject: (ET) E15 will not run Hi,
I recently acquired a 26AE15AA that will not run and would like to get your
opinions. I was told that the tractor did run when parked indoors many, many
years ago. There has been some work done on this tractor in the past. >From what
I can see the;
- Key switch has been replaced
- Forward / reverse relay is a different unit completely.
- Card 1 has soldered connections for the wires now vs the slip pins and
all the wires were cut and reconnected via a 15 pin AMP connector.
I performed some initial checks from the Home Owners Manual.
- Wiring looks clean
- Card components look fine
- Key works
- PTO works
- FWD/REV relay works
- All the microswitches in the speed control are good.
- Voltage from the speed control start switch is getting to Card 1 pins 5
and 6 as they should depending if start was actuated in forward or reverse.
However the L coil does not energize. I applied voltage externally and the coil
did energize.
From the looks of things, this points to a Card 1 issue but I was wondering
if there is something that I may have missed. Could the resistor card be a
problem? Or doesn’t that have anything to do with the energizing of the L
coil?
Thanks for your help.
Regards,
Dean A. Stuckmann
5432 County Road U
Newton, WI 53063
_______________________________________________ Elec-trak mailing list Elec-trak cosmos phy tufts edu https://cosmos.phy.tufts.edu/mailman/listinfo/elec-trak |