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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
bobcat 743b-engine wiring picture needed
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<blockquote data-quote="flyerdan" data-source="post: 104374" data-attributes="member: 2510"><p>I don't have any pictures, just the same book that you probably have (<em>which I think has quite good wiring diagrams</em>).</p><p>Is the battery charging at all? Does it discharge while sitting, or running or both? First, start by disconnecting the ground at the battery and put the charger on it to give it a full charge. Then, when you touch the negative terminal, there should be a pretty good spark as it has to have a pretty good parasite draw to run a battery down in that time.</p><p>You need to find out where the drain is coming from, and the best way is to put an ammeter in series with the battery so that you can start disconnecting things to see where the draw is coming from; it's likely too much draw for the typical DMM, I have a 25 amp panel meter scrounged from a piece of equipment that I use. My first guess would be the alternator / regulator. If you have a parts house that does testing, I'd take it to them and test it while the battery is charging, that could solve it right there.</p><p></p><p>According to the wiring diagrams, the three connectors you mentioned are:</p><p>Lt. Blue / Orange -10ga. to glow plugs (or from glow relay)</p><p>Red / White - 12ga. Live fused accessory</p><p>Orange - 16ga. Switched fused accessory</p></blockquote><p></p>
[QUOTE="flyerdan, post: 104374, member: 2510"] I don't have any pictures, just the same book that you probably have ([I]which I think has quite good wiring diagrams[/I]). Is the battery charging at all? Does it discharge while sitting, or running or both? First, start by disconnecting the ground at the battery and put the charger on it to give it a full charge. Then, when you touch the negative terminal, there should be a pretty good spark as it has to have a pretty good parasite draw to run a battery down in that time. You need to find out where the drain is coming from, and the best way is to put an ammeter in series with the battery so that you can start disconnecting things to see where the draw is coming from; it's likely too much draw for the typical DMM, I have a 25 amp panel meter scrounged from a piece of equipment that I use. My first guess would be the alternator / regulator. If you have a parts house that does testing, I'd take it to them and test it while the battery is charging, that could solve it right there. According to the wiring diagrams, the three connectors you mentioned are: Lt. Blue / Orange -10ga. to glow plugs (or from glow relay) Red / White - 12ga. Live fused accessory Orange - 16ga. Switched fused accessory [/QUOTE]
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bobcat 743b-engine wiring picture needed
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