sparks flying

General help and support for your Lindeman through 2010 John Deere crawler
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Randy Richards
420 crawler
420 crawler
Posts: 45
Joined: Wed Mar 05, 2008 7:54 am
Location: Marion, IN

sparks flying

Post by Randy Richards » Thu Sep 15, 2011 7:28 pm

I was wondering if anyone knows the possible causes for sparks flying when I reconnected the battery. I just had the generator rebuilt. the voltage regulator looks as it is original to the 1010 diesel I have. If anyone has an idea I would apppricate knowing. Thank you Randy

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jtrichard
350 crawler
350 crawler
Posts: 1883
Joined: Sun Jan 11, 2009 9:48 pm
Location: Joshua Tree CA

Post by jtrichard » Thu Sep 15, 2011 8:04 pm

i hate gen give me an alt any day with that said i have always been told when you put a new gen on you always put new reg on to how bad are the sparks? take the leads off the gen and see if sparks are still there if so youll just have to go on a search and destroy mission till you find it
2010 with 622 dozer with mod. 35 ripper and a 2010 with 622 dozer bought in 1969 and a 2010 loader with drott and mod. 36 ripper

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440 iron popper
1010 crawler
1010 crawler
Posts: 273
Joined: Sun Sep 26, 2010 7:48 pm
Location: Québec, Canada

Post by 440 iron popper » Thu Sep 15, 2011 8:28 pm

Hi,

When you connect the negative cable, the spark comes from the generator windings ''power up''. Or any other load present at the moment you touch the battery post. It is typical of Inductive loads like ignition coils, relay coils, transformer windings at power up. They always draw a relatively large amount of energy when voltage is applied to them. A spike also appears when you disconnect a coil supplied by DC voltage. A coil that is de-energized will swap polarity trying to release this energy in the circuit. If you physically pull the wire off an energized dc coil you'll see a good spark. Point ignition is basically based on that. Coil being connected and disconnected at definite timing.
I would not worry about that.
440IC 1958 #443712, 602 blade, Gearmatic winch project in the back
440IC, serial tag gone, Blade with tilt
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