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Question Posted By: Guest on 1-7-2009
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| Make of Bike: |
H-D |
| Model of Bike |
FXEF |
| Year of Bike |
1980 |
| Engine Size |
80ci |
| Other info on Bike |
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| What's your question? |
Bike doesn't seem to be charging. Can I check the charging myself?
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| Details: |
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Answers:
- First thing I'd do is to find a good digital multi-meter, put it on DC volts and test the battery. Should show 12+ volts (13 is better), if not check connections at the battery, and charge until it does. If this doesn't act right, remove the bat and have it load tested. Once you are absolutely sure that you have a known good battery in there, start the engine and again using DC volts check the output by taking a volt reading direct off the battery terminals while the motor is running in the 2000 rpm range - voltage should be 13.8 to 14+ volts and if it is you are in fat city. When you aren't showing a forward charge and you've cleaned all the terminals and grounds, pull the stator plug out of the front of the case on the primary side (turn the bike off first, don’t check this with the motor running!).
Visually inspect that the plug is making good connections, no corroded or burnt pins on the regulator plug or the stator plug. Put your meter on ohms and check from one of the pins on the stator (engine side of the plug) to a good ground….should be no continuity on either pin to ground. Check pin to pin and you can get a reading of .2 to .4 ohms. If you have continuity from pin to ground your stator is grounded and needs to be replaced. If you have "infinity" from pin to pin your stator is opened and needs to be replaced.
If the stator resistance checks are OK, start the motor with the regulator still unplugged. Set the meter to AC volts...read across the stator pins (BE CAREFUL, the motor will be moving around/vibrating a bit...don't short anything!!)...you should read between 19 to 26 volts AC per 1000 rpm of motor speed. Note the readings then TURN OFF THE MOTOR. If your AC voltage output is lower than spec'd, there is a partial short in a winding(s) and again, the stator will need replacing.
Turn your meter to DC volts and check the voltage regulator side of the plug from pin to ground. These pins to ground should be very low voltage if any at all. If you get battery voltage at either pin, replace the voltage regulator. By: 47Knuckle-Dragger on: 1-7-2009
- Feels good to fix your own shit, doesn't it...without having to take it to some asshole who wants to break it off in your ass?!
That's what we're here for! By: 47Knuckle-Dragger on: 1-9-2009
Reads: 2095
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