Harley Davidson Forums banner

stator problem

735 Views 13 Replies 6 Participants Last post by  Convince Me
2017 m8 107. the stator passes the tests continuity, ground but when I test ac output when running i get OL open circuit reading on the multi meter. checked it on the bench and on the bike. Rotor looks good strong magnets.Grounds are good. What would i check next?
1 - 14 of 14 Posts
Are you sure you are on AC and appropriate scale on the VOM? OL over load?
Check your voltage regulator with bike running at the battery with multi-meter. Should not be higher than 14.5 volts or lower than 13.5.
Are you sure you are on AC and appropriate scale on the VOM? OL over load?
my meter says ol means open line , circuit. set on the right scale.
Check your voltage regulator with bike running at the battery with multi-meter. Should not be higher than 14.5 volts or lower than 13.5.
nothing out of the stator so it just reads what the battery is
You need to disconnect the regulator from the stator and then check the AC out from the stator. If it is good it will be 20 to 26 volts per 1000rpm of engine speed.
  • Like
Reactions: 1
nothing out of the stator so it just reads what the battery is
How many ohms when testing across the stator connector pins ?
You need to disconnect the regulator from the stator and then check the AC out from the stator. If it is good it will be 20 to 26 volts per 1000rpm of engine speed.
[/QUOTE yep, i checked that way . old stator only had 10-12 volts this one checks open line/ circuit. Im guessing i got a bad stator. it checked good continuity and ground on the bench and on the bike. just no AC voltage
How many ohms when testing across the stator connector pins ?
. .1 all 3
nothing out of the stator so it just reads what the battery is
I thought you said the stator checks out to specifications. The battery itself will only read 12.7 to 13.2 if it's at 100%. That number increases with the motor running. If it doesn't you've got a problem. If the stator checks out then next in line is the voltage regulator.
I thought you said the stator checks out to specifications. The battery itself will only read 12.7 to 13.2 if it's at 100%. That number increases with the motor running. If it doesn't you've got a problem. If the stator checks out then next in line is the voltage regulator.
the continuity and ground check out just no AC output lts a new stator maybe faulty
All the numbers sound correct ! No shorts or opens and the coils measure the correct resistance. That leaves one thing left in the alternator circuit, the rotor. BUT faulty rotors are usually a mechanical fault and also produce intermittent AC output. I think I would still take a hard look at that rotor, make sure the splines aren't stripped out etc..
  • Like
Reactions: 2
All the numbers sound correct ! No shorts or opens and the coils measure the correct resistance. That leaves one thing left in the alternator circuit, the rotor. BUT faulty rotors are usually a mechanical fault and also produce intermittent AC output. I think I would still take a hard look at that rotor, make sure the splines aren't stripped out etc..
that looked good ,going to pull it all apart one more time and check everything for the 4th time lol
  • Like
Reactions: 2
I'm following this closely I'm having stater woes myself. I'm damn near an expert taking off that one and one half inch nut without power tools.
  • Like
Reactions: 2
1 - 14 of 14 Posts
Top