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How to check AC voltage off stator

  • Thread starter Thread starter jbs80106
  • Start date Start date
J

jbs80106

Guest
Already fired 1 voltmeter so want to double check the procedure before I use my neigbors!

I've snipped the wires where they connect to the rest of the bike. Stator papers say to switch voltmeter to AC. Have to swap probe locations after checking DC. I can set to 100 or 500 VAC. I'm guessing its better to start w/500?

Then where to I probe? Papers aren't clear if I put a probe onto each leg coming off the stator or if I put the red probe on the wire outta the stator and touch the black to ground/bike-frame? :confused:

Hmmmm....
 
You'll want to measure with the "100" side...

Touch either of the multimeter legs to any two of the stator leads. Test

There will be 3 different combinations of the previous tests. 1,2 1,3 and 2,3.
 
Thanks but...

Thanks but...

under step 1 is says...

"and measure the potential difference between all possible pairs (white/blue against white/green, white/blue against yellow, white/green against yellow).".

Does this mean put red probe on one wire coming out of the Stator, and the black probe on another? or do I touch the black probe to ground?
 
Thanks BRV...

Thanks BRV...

answered my qeustion as I was typing it!
 
And when you reconnect the stator wires to the r/r wires, it doesn't really matter if you match colors or not.

Electrically, they are all the same.


.
 
As you've already done, diisconnect the 3 stator windings for measurement.

You have 4 seperate things to do to check your stator voltage. Because the current is AC there is no polarity to your probes (unlike DC). Measure voltage between each of the 3 possible combinations of 3 wires.......you're looking for consistency as well as a sufficient voltage supply (20vac indicated on your meter minimum at idle).

THE 4th CONNECTION IS AS IMPORTANT..........Now check for AC voltage between each of the 3 leads AND GROUND.......ANY VOLTAGE SHOWN HERE INDICATES THE STATOR WINDING IS SHORTED TO IT'S CORE AND YOU WILL HAVE PROBLEMS because of this.
 
an update

an update

I measured the voltage between the 2 legs of the stator that go to the Reg/Rect and I measured ZERO volts!!!!!! The stator is new, about 6 months old. I pulled starter cover off to check my connections between new stator wires and old wires that run to the reg/rect (new stator wires weren't long enough to reach so had to crimp them together -- so its new stator crimped to old wires running to behind battery which are then crimped to new R/R).

All connections are clean and secure.

There is 1 more leg to measure which is the wire from the Stator that seems to run to fuse box/bike to keep it running. I wasn't sure if the bike would run if I snip this connection to measure the voltage.

HATE thinking that my next step to drain oil and pull side cover off to look at the stator. Can't figure out how there is NO voltage coming back from the stator. Either:

- user error in checking A/C voltage,
- its shorted out,
- magnet inside isn't spinning (how to check that?????)

Now debating to I just live with short spins to keep my riding itches at bay until it gets cold out or call it a 'season' and tear her apart....

bummer either way!
 
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