| Author | Message | ||
     Darthane |
I've been through all the service manual tests, and I'm a systems engineer, myself...but I want a second (and third, fourth, etc) opinion before I go tearing into my bike. 2003 XB9R, only modifications are a Drummer exhaust, Race ECM, and XB12 airbox, drilled, with a K&N...nothing that should affect these tests. I've been traveling back and forth between home and Oakville, ON for the prototype builds of the vehicle I'm working on, and this coming week is a short one and the weather's supposed to be nice, so I figured I'd pack my saddlebags instead of my luggage this time. I was going to ride to a local bike shop to look for new 'around town' boots and lo and behold my battery's dead. 6.5V...bike has sat for about two weeks while I traveled - but it sat all winter and started right up this spring. With a groan, I did the basic test first. Swapped the battery for the one from my Blast, fired it up and checked voltage while running. 12.1V...then 12.09...then 12.08. >.< Yay. Key off load - 1.4mA. Manual lists maximum key-off load as 1mA...I'm not overly concerned about this reading. Disconnected the voltage regulator from the rest of the bike (big black connection under sprocket cover, three black wires). Resistance between any of the three pins (stator-side) and bike ground plane - ~250 Ohms (should be no connectivity). Resistance between the three pins - ~0.8-1 Ohm (book lists 0.1-0.3 Ohms as normal, probes show 0.000 Ohms when touched together). AC Voltage test shows a piddly 1.8-5V @ ~2500RPMs depending on which pins I'm checking across. Manual lists normal readings as 16-20V per 1K RPMs. On the voltage regulator side, no connectivity to ground on any pin. So...can you guys think of anything I missed, or will I be digging around in my bike soon? It's still under warranty...but honestly I don't have a dealership around here I trust. I suppose if I do have to replace the stator/rotor, I can finally replace that leaky rear exhaust gasket.  (Message edited by darthane on June 17, 2006) | ||
| Ricochet |
Bryan, Sounds like you've got a stator that's shorted to ground. I've got an 03 XB9R also, and I've been through the same tests last summer when my battery went dead during a ride. My AC voltages were up near 20, my pin to pin ohm tests on stator were normal. While the sprocket cover was off, I happened to find the supply wire to the speed sensor worn through causing a short to ground. I couldn't believe that amount of current was overcoming the charge circuit, but I disconnected it and eventually replaced it and the problem was solved. Anyways, I reviewed your tests in the book and looks like you nailed it. Now comes the fun part! | ||
| Fullpower |
yup. its stator time. please not and photograph the exact (visible) point of failure. thanks. dean ( spare stator on the shelf). | ||
| Darthane |
Next question (perhaps a stupid one, but I didn't see any mention of it in the manual)... ...do I need to replace the rotor with the stator, or can I replace only the stator? ...or is it a good idea to replace them together anyhow? I'm going to try to get Daves on the phone Monday to order this and random other things. |
