chris dillard
Member
new hd
battery not charging
- Thread starter chris dillard
- Start date
Hoople
Account Removed
You should see something around 50 volts AC at 3500 RPM. It should really lift when you increase the RPM.
chris dillard
Member
around 3000 rpm have 59 volts
chris dillard
Member
just unpluged the wire from reg to battery underneat frame and checked volt only had 4.5 volts
Hoople
Account Removed
It is not a proof positive test (because there is no current load on the stator) but seeing that level of voltage is great. That strongly indicates the stator is probably good. (more tests to follow)
Now hook the stator and regulator back up as it normally would be. Place a DC voltmeter directly on the battery posts. With the ignition & key off, what does the voltmeter read. Now start the engine and let it idle. What does the meter read in hundreds of a volt (12.XX). Increase RPM to 3000 RPM and hold at that RPM. What does the meter now read in hundreds of a volt.
chris dillard
Member
off 12.39 idle 11.93 3000ish rpm 11.93
chris dillard
Member
correction 12.39 off 12.00 idle 12.04 rpm
Hoople
Account Removed
I find it so hard to believe that the brand new genuine HD regulator is bad. Did the new regulator have 4 wires as this attachment shows? If so, is the wire with the ring terminal attached to a clean frame ground?
After installing the new regulator, did you happen to have any accidental sparks from a shorted screwdriver or something while installing? Anything that could hurt the new regulator?
After installing the new regulator, did you happen to have any accidental sparks from a shorted screwdriver or something while installing? Anything that could hurt the new regulator?
chris dillard
Member
looks just like pic ohmed out all grounds,all good, i think that someone poped the reg and stuck back in box,it has 12+ volts at the plug where the stator connects with switch off if the stator putting out ac volts and there is 12 v dc there how is it gonna work?
Hoople
Account Removed
Well that could be the case.
If you wanna make 1 more test before you spend another $125 you can try this. This time, measure the output of the stator with a load on it. Get 2 thin sharp straight pins. Push a pin through each of the stator wires. Don't let the pins touch each other or to ground. Make sure the stator is connected to the regulator. Connect your AC voltmeter to the pins. We can now measure the voltage of the stator while connected to the regulator.
Make sure those pins won't touch each other or to ground. Start the engine. See if you still read that 26 Volts AC at idle and 50 volts at 3000 RPM. If you do, it sure looks like your new regulator was defective.