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Jim Hindman
08-19-2002 07:34:35
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I have a 861 Powermaster, 4 cyl., gasoline, 12-volt. Recently, after being shut off for a break, when I tried to start it again it just cranked but would not start. I diagnosed an electrical problem by testing for spark at the coil & plugs. I traced it back to a ceramic contraptions which I later learned was a "resistor coil" which was broken at the coil itself. (By all appearances it looks like it was the original, circa 1958-1964.) I took it around and no one even knew what it was until I found an old timer at a NAPA parts store who identified it. He sold me a replacement (1.35 ohms) though he was not sure of the capacity of the old one and could not test it since it was broken. My Ford Parts Manual makes no mention whatsoever of this. Ok, so I install the new one and the tractor starts right up. But, the next time I shut it off for a break it doesn't start back up again and demonstrates the same symptoms as before. So, I take the new resistor coil out to examine it and find that (a) it smells; (b) it's extremely hot; and © the ceramic shell if broken in two, but the coil itself is apparently undamaged. After it cooled off, I taped the ceramic shell back together, re-installed it, and tried to start it again. It started right up, but again would not start up afterwards when shut off for a break. Now, no matter what, it won't start back up. My questions are as follows: 1) I assume the original resistor coil "broke" simply because it was old and worn out, but by my description above would there seem to be a more involved systemic problem? 2) Is the capacity or rating of the new resistor coil (1.35 ohms) adequate? 3) Or, is it heating up and breaking due to another problem? 4) If so, then where do I go from here? I might add that I am not even a very good shade tree mechanic, but have gotten this far just on some common sense. I have studied the Ford starter electrical wiring diagram and (besides the fact that this resistor coil does not even appear) do not even know the function of this resistor coil. Any help y'all can provide will be appreciated.
Jim
via hindmanj@mtrmls.com
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