Electro 12 Stator Output

[Ran d 24]

Checked my stator output with a digital volt meter. Measured 33.8 VAC across both stator leads. Is this normal for a k301 with 15 amp alternator? Still trying to determine reason for my ammeter showing +10 amps when I increase engine rpm. Never used to show that much current and it always returned to slightly off zero (+). Appreciate any suggestions/comments.

[ebinmaine 67,768]

2 minutes ago, Ran d said:

Measured 33.8 VAC

 

That sounds about right.  

 

 

3 minutes ago, Ran d said:

reason for my ammeter showing +10 amps

 

Have you checked that with a meter that ISN'T the ammeter?

Maybe your ammeter is dysfunctional.  

 

Has the wiring been modified in any way by a PO?

 

Have you verified true GOOD grounds throughout the circuitry?

 

Have you verified VR ground?

 

Is the battery tested good by a true load test?

 

 

Do you have any spare parts to swap in for diagnostics?

VR

Battery

Ammeter

 

 

 

[953 nut 55,394]

If your battery is not as good as it once was it will demand more current, is the battery getting hot while being charged?  Get it load tested.

Clean and tighten ALL of the connections on your electrical system including grounds. A loose or corroded connection will cause a voltage drop resulting in a higher than normal current flow.

[Ran d 24]

Load test was acceptable.

 

[pfrederi 17,743]

Check accuracy of ammeter and ground for the regulator.

[Ran d 24]

Tried another aftermarket Kohler clone VR. Still seeing about 9 amps on the ammeter. If I turn the electric pto clutch on, the current will decrease by 5 amps or so. If I decrease engine rpm, the current decreases. I now have four voltage regulators that I have tried on the tractor and all show same high current when rpm is increased. Three are Kohler and one aftermarket. Is there a reliable way to check these to determine if they are usable? I either have four good VR's or they have all been damaged installing them on my tractor. Would like to find someone who has a kohler 2576120S VR tester and have them tested. I'll keep trying to figure this out. I have owned this tractor since 1982 (2nd owner). It has been a good machine and has been maintained meticulously.

[oliver2-44 9,787]

Take a battery jumper cable and connect it to the engine (if you can find a way to clamp it to the aluminum plate that the stator is mounted on that would be ideal, but hard to do unless tins are off) 

Connect the other end to the battery negative. 

Make sure both ends have a good contact.

If you have a large electrical alligator clip connect one end to the regulator and the other end to the battery negative.

This will give you an extra ground.

If the amp meter and you digital VOM reading change it indicated you need a better ground to the engine or regulator.

If you have or can borrow an analog VOM see what the test reading indicate with it. 

[Ran d 24]

Today I checked the stewart warner 82201 gauge in the tractor with a fluke 87 dvm. When the SW gauge read 9 amps, the Fluke read 6 amps. Checked the stator output again using  this Fluke 87 meter. Near max rpm with 9 amps charging on the SW Meter, the voltage measured 31.8 vac. The frequency measured 440Hz. When I completed testing, the tractor wiring was back to normal. The battery voltage measured 14.4 vdc where the ammeter showed 9 amps. After a couple minutes, the battery voltage remained unchanged. I kinda think the SW ammeter gauge is part of my problem reading high but this ammeter never read that high ti recently. It always read a little high after starting then returned back to slightly off zero on + side. If my battery voltage does not go higher than 14.4 vdc, I'm not going to get too excited. Maybe the SW ammeter has been affected by the vibration from the tractor?

[ebinmaine 67,768]

Ammeters are known to go bad. 

Do you have a spare to swap in?

 

[rmaynard 15,535]

I totally ignore my ammeter. All that I am concerned with is that with the engine running at full throttle, I have between 13.5 and 14.5 vdc at the battery.

[953 nut 55,394]

On 12/8/2023 at 9:33 AM, Ran d said:

Still seeing about 9 amps on the ammeter. If I turn the electric pto clutch on, the current will decrease by 5 amps or so. If I decrease engine rpm, the current decreases. I now have four voltage regulators that I have tried on the tractor and all show same high current when rpm is increased.

So                       you have cleaned and tightened ALL electrical connections including grounds and forun no points the were corroded or needed attention?