i acquired a santa fe chief from the 50s that was sitting for many of
years, i cleaned it up and started running it, the front uncoupler
gets do hot it burned my finger, i spayed water on the bitch and it
sizzled like a cars exhuast manifold. i noticed a wire going to it i
guess it is some kind of electric uncoupler, anyone know what the
problem could be??
On Mon, 18 Feb 2008 12:45:26 -0800 (PST), I said, "Pick a card, any
I don't know the makeup of your uncoupler but if it's like many
others, it has a coil inside of it which must be switched on and
then off again after the uncoupling is done. Leaving it on builds up
heat as the coil inside is nothing but a loop of wire that acts as a
magnet when energized.
Another magnetic device is the remote switch machine. If you leave a
remote switch machine energized for a long time, it can do the same
thing and depending on the current available, melt the switch. Thus,
momentary contact switches are used for switch machines and most
uncouplers. For now, disconnect the wire until you get a more
informed answer. Perhaps you could better describe it to us.
There's a wire that's supposed to run from the uncoupling coil of
the coupler to a slide shoe on the bottom of the front truck. I
suspect your wire has come loose from the slide shoe and is
contacting the P/U roller contact which is nearby. This would
keep the coil energized all the time, making it get hotter than
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