DOA at the grocery store - K-Bikes.com - Excellence in Motion
 
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post #1 of 8 (permalink) Old May 15th, 2006, 3:09 am Thread Starter
 
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Unhappy DOA at the grocery store

I posted this under the wrong forum earlier, so here it is again. My '85K100RT went dead on me at the local grocery store parking lot. It wouldn't turn over and acted just like a dead battery. I' m getting no juice to the ignition or any other electrical components. It has been on a charger for several hours now, but still no juice. I have checked the battery connections and they are clean and tight and all the fuses are good. Is there a main or master fuse on these bikes? I checked my owner's manual and Clymer, but neither mentioned a main fuse. Also, could my starter be locked up, thus shutting off all the electrical?

Any ideas?
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post #2 of 8 (permalink) Old May 15th, 2006, 6:43 am
 
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The starter can act this way when it is dirty. The main ground runs through the starter and if it is dirty you will have the symptoms you describe. Pull it, take it apart and clean it. There are some excellent articles at IBMWR.org, in the tech pages.
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post #3 of 8 (permalink) Old May 15th, 2006, 7:52 am Thread Starter
 
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Thanks a bunch. I tried to fire it this morning b/4 I came to work and it was still DOA. I'm convinced it has to do with the starter. I'll check the website as you suggested.
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post #4 of 8 (permalink) Old May 17th, 2006, 11:41 am
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I noticed mine was 'intermittent' the other day on the ignition switch. Last time I sprayed in some electrical contact switch cleaner and it lasted a year, So I'll try the same thing again.

KRS's have their starter linked through a small switch at the clutch lever, a similar switch on the side stand and gear switch. They do this to make sure the bike doesn't start in gear or stand down. It's a pain, but sometimes you have to go through this circuit with an ohmeter and see if the switches are working ok. The stand switch is most problamatic as it can get water in it.



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post #5 of 8 (permalink) Old May 18th, 2006, 10:45 pm Thread Starter
 
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Since I am anxious to get the bike started, I was going to break it down tomorrow (Friday) and start cleaning all the contacts and the starter, but I got called into work this weekend for a looooong shift starting tomorrow @ 7am. I delivered it today to a local bike shop, who promised to have it out by Monday. I took them all my manuals and tech bulletins I got off ibmwr.org, but I'll call them tomorrow and suggest they try the switches you described. There's not a BMW shop nearby, so I'm having to work with an independent shop. Thanks for the suggestions.
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post #6 of 8 (permalink) Old May 20th, 2006, 10:10 am
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Quote:
Originally Posted by bwbcpa
Since I am anxious to get the bike started, I was going to break it down tomorrow (Friday) and start cleaning all the contacts and the starter, but I got called into work this weekend for a looooong shift starting tomorrow @ 7am. I delivered it today to a local bike shop, who promised to have it out by Monday. I took them all my manuals and tech bulletins I got off ibmwr.org, but I'll call them tomorrow and suggest they try the switches you described. There's not a BMW shop nearby, so I'm having to work with an independent shop. Thanks for the suggestions.
They'll need the electrical diagrams to work out the interlock circuit!



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post #7 of 8 (permalink) Old May 20th, 2006, 2:13 pm Thread Starter
 
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They have them.
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post #8 of 8 (permalink) Old May 26th, 2006, 6:09 am
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It does sound like the starter (worn brushes effecting a good internal ground), I had a simular problem with my K100RS. But as I was 150 miles from both home and parts and the bike would not start, I tried several things to get it running. I tripped upon the fact that I could get a good ground when I put the bike on it's center stand, and rock the rear wheel back and forth (just a couple of times, not rocking hard) while in third or fourth gear. This was enough to maybe displace some of the worn brush carbon material within the starter assy, I'd get juice, then be able to hit the swicth and start it. This got me home.

Ray
04 GT
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