LAWN MOWER /TRACTOR / ZTR / HOW TO TEST SMALL ENGINE VOLTAGE REGULATOR/ RECTIFIERS
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- Опубликовано: 6 сен 2024
- JEREMY FOUNTAIN
THEMOWERMEDIC1
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CHECK OUT TREY DRIVER AND HIS AWESOME RUclips CHANNEL AND DEALERSHIP
TREY DRIVER
BIG BUCK MOWERS AND EQUIPMENT
3301 STATE HIGHWAY 121
BONHAM TEXAS 75418
www.BIGBUCKMOWERS
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ITS A CAKE WALK TO TEST THE VOLTAGE REGULATOR ON A SMALL ENGINE....WATCH MM1 AS HE SHOWES YOU HOW
THE MOWERMEDIC1 HAS 15 YEARS EXP DIAGNOSING AND REPAIRING LAWN EQUIPMENT, HIS GOAL IS TO HELP THE DIY'FER PERFORM REPAIRS EASILY THROUGH HIS DETAILED VIDEO TUTORIALS, PERFORM ALL REPAIRS AT YOUR OWN RISK, ALWAYS CONSULT A SERVICE MANUAL FOR SPECS AND PROCEDURES
LOL I have to agree with General on this. I did not watch entire video the first time. That tester is like 200-300 bucks to test a 15.00 part. To test on a mower you dont have to take it off the shroud. Just run the mower insert probe on DC output and other probe on the ground.
Should read 14 volts. DONE. don't need anything. So why would you want to pull that off a mower to test it? As long as the mower starts you can test it, if it does not start solve that issue first (jump it, put gas in it etc)
Same exact thing I was thinking
Believe it or not there are ways to test these things without this high dollar tool..Im old school so yep this is useless to me.
w/a small transformer and a $5.00 volt meter
Okay mister old-school explain how you do it
It's appealing to have a device that's so slick. Unfortunately it does distance the mechanic a little from what testing is actually being done. But it gets the job done fast and finds a solution quickly. Nice demo.
If we owned the test device in the video, we would probably have the manual that came with it. Testing wouldn't be a problem. I searched for "testing Voltage Regulators" because I didn't want to have to purchase special equipment. Isn't there another viable low cost way to test a small engine voltage regulator?
That's all good and swell if you happen to have a "Voltage Regulator Tester" but some of us aren't in possession of such things. Is there a way to test a regulator with just a multi-tester and possible power supply? Stator is faulty so I cannot check regulator while on running engine by any measurable output. Would be nice to know if Regulator is bad to save another week or so of waiting for it to come after Stator arrives and THEN you find regulator is bad.
any good dealer will test the vreg for free at the parts counter
+mdenny9969
Yep.... You are correct.
That's the question I've been begging to answer. Here's what I have so far. The two leads coming out of the stator should have some sort of resistance, 24 ohms. If you get nothing, odds are there is a short in the stator. If you start the engine and measure the ac voltage coming out of the stator while connected to the rectifier, (terminals 1 and 3) you should receive some sort of voltage between 18 to 30 volts. The voltage going out of the rectifier which is DC voltage to charge the battery, is the middle pin and should be around 14 volts. You would measure the center pin and t chasis ground to get the reading.
I figured you would need power going into the regulator to test. Nevertheless, in this case it was a faulty ground somewhere else.
How will a regulator react if it tests high? I mean if its installed on a motor , what will the symptoms be?
Correct me if I'm wrong but, on a Kawasaki the two terminals on the right are both AC and the single one on the left is the B+ so it goes B+ AC AC that's the way the plug from the stater comes out
So how do they hook up
❤ geez I wonder how many of us have one of those testers 🤔
Various comments mention that this tester is stupid because you can just test the regulator with a multimeter. The answer is that you CANNOT easily bench test with a multimeter because the Kohler regulator/rectifier is more than just a simple 4 diode bridge. It also regulates! If you test the resistance between AC and B+ on a brand new unit, it will show 0 between one of the AC lugs and B+ and infinity between the other AC lug and B+. If you reverse polarity (switch lead on B+ from black to red or vice verse), you'll find the same readings, but on a real diode bridge changing the polarity would have flipped the reading from 0 to infinity or from infinity to 0 since the diode conducts in only one direction. Forget the multimeter diode test; it will make you mistakenly think every regulator/rectifier is blown.
8Hp Kohler on a Craftsman lawn tractor, kept blowing fuses. Regulator puts out 21 Volts! So I replaced this module, double checked the ground and even double grounded it for temporary. Again 21V !! What gives? The old regulator was definitely bad, one of the "A" terminals is shorted to it's metal housing internally.
One schematic is worth a thousand words.
THATS AWESOME! I LOVE TOOLS THAT MAKE THE JOB EASIER
The plug connecter is still on the tractor I found out from Troy Bilt Tractor it's $90. and change for the wiring and the light bulbs for the tractor
Awesome tester… 👍👍
Good information. Does it matter about your ac lines + R -
Great vid mate. Even easier to listen to your voice when you sound like Elvis talkin me through it. Cheers for the help.
nice little quick tester :-)
Looks like a bridge rectifier followed by a reguator.
Can be tested with a psu and bulbs+meter, but that tester is fast.
the only thing it wont test for is a load test creating heat and breakdown,
but that can be done on the machine i suppose.
what are the symptoms of a bad voltage regulator
That is one sure fire way to see if one's VR is good or not. So, battery on the center and either alternator wire on each end, correct? Very helpful! Thanks! Can the Deere 140 Kohler rectifier be tested with an electrical tester?
When using a digital multimeter with the setting on diode mark to test a three pin rectifier regulator, is the reading supposed to show zero across any of the AC/B+ pins pairs? Please help me with answers,I just bought a brand new rectifier regulator supposedly for John Deere Onan F930 on aliexpress online store but to my surprise one of the ac/B+ pins pairs reads absolute zero on a multimeter with setting on the diode mark.
Fixed my Z950R with your help- thanks
That's what I have on my 2004 Troy Bilt Tractor does Troy Bilt sell them like that
I don't know much about mowers I'm learning (the hard way like I learn everything else) but I've got two questions for you. 1 would a defective voltage regulator keep the mower from turning over and 2 if you're a "genius" like me and you don't disconnect the battery while you're working on the flywheel and you accidentally ground the stator will that fry the voltage regulator? I'm guessing yes on both but since I don't really know I figured I would ask somebody who did.
The voltage reg has nothing to do with the engine turning over and the stator is grounded anyway so no harm there
I found this video to be very helpful, I have a 40-year-old 16 hp Techumsy that I put on my struck mini dozer. There are three wires that come out of the engine on two of them I have 50 VAC at high rpm. Does the third wire go to ground or does the third wire go to the voltage regulator positive?
Because we have an isolated AC stator output, can we use a full bridge rectifier regular for more Amps output? I think we can ;-)
So when are you going to test them because yes we all know the tester you used will work. If we all had one we would not need to find out how to test one SO SHOW HOW TO DO IT OLD SCHOOL IF YOU KNOW HOW. thanks
I have several vids showing how.
Just search " voltage regulator".
Awesome tool and video thanks
I had one that read Short on my Kohler tester. I tried it three times and kept coming up that it had a short in it. lol. Then unit are between 175 and 230 dollars.
Who ever did it I don't know why but they took out the wiring & lights but the connector is still intact
What do you mean b positive? What is the smallest Briggs with charging system? The 12 HP opposed is too big of a flywheel for my project. Thanks
i've got the same tester
Do the two AC wires coming off the stator and a hot lead and neutral similar to AC in house?
I know this is an old post but I need to pick your brain I have a 1972 John Deere 112 with the Koehler engine and I keep burning up the voltage regulator rectifier last one lasted about 1 tank worth of fuel. The stator has no grounds has good continuity and at full throttle a steady 36 volts ac. Any ideas the voltage regulator is part number AM102596.
Can the AC wires go ether way , dose it matter if you cross them,
i don't have nor do i plan on spending 100 plus dollars on this machine, If a regulator is functioning correctly the b+ middle prong on a kohler should be putting out 12v correct?
The middle prong B+ isn't putting out a single volt I bought it new from dealer, Does that mean it's faulty?
good video, but how to get more detail, like what voltage it makes, how powerful it is, in case if it doesn't say anything on the side of it etc ? Thanx!
How about you tell us all on RUclips how to use a multimeter to do the same thing ???? Thanks
ok i'm gonna lose it. I replaced the regulator because the dealer told me to. 1977 john deere 300 kohler. after that i learned how to test the stator and it is putting out 28volts, but still will not charge my battery. what else should i check?
Is the mowermedic still answering questions?
Hey I have a John Deere LT155 with a Kohler 15 HP engine .
The two white wires coming from the stator are butt connected into one wire that goes to the voltage regulator mounted on the side of the flywheel cover and the other A/C wire goes to the ignition switch.
The problem is that both A/C wires have gotten so hot that the insulation has melted near the voltage regulator connector and the white A/C wire going to the ignition switch got so hot it became brittle and fell apart.
There is a 14 guage ground going from the voltage regulator to the engine block, do I need to find a better ground?
I do not see any diodes .
especially if you don't have a degree in electronics like me
at 4:20 is that the enveloppe of ur youtube check? lol
please can you tell me where we can find voltage regulater
how would one test a Kawasaki 20 Amp Voltage Regulator 21066-7011 210667011 where you have 3 tabs with two of them joined thanks mike
I have a kaw fx850v and accidentally put the stator plug on the wrong terminals on my regulator. Did this damage my stator or regulator? I have it hooked up correctly now but it's not charging.
Please help
Hello I would check only stater AC volts when running. If it’s good then check output of rectifier 12+ volts with running and battery connected. If rectifier bad replace. Test at battery should show 13 volts plus if system is charging
@@josephpuchel6497 thanks I replaced both and now fixed
Quick question. My stator, voltage regulator rectifier and battery are all brand new. Why is it still not charging?
Your not grounded
@@THEMOWERMEDIC1 it's a kaw fx600v. Where can I not be grounded?
@@THEMOWERMEDIC1 can you tell me where to get started?
Can I add a ground?
This would be GREAT but not one of my mechanic friends has the tester, so I appreciate the video but it did nothing. :(
how much AC voltage should I be getting out of my 16.5 Kohler? In a Lt 1000 craftsman
From what I've seen on utubes about 26 volts or so at your working running RPM . Not idle RPM
The wiring from the regulator to the battery. It is obviously not getting to the battery! It, voltage, is present at the regulator but is not getting to the battery.
how do you test a rectifier with a multi meter
i love elecgtrical issues.
but you don't know nothing about electricity
Thanks for sharing
yep useless to me too... I will test mine with a voltage tester ....
Hahahah I am the first,just a joke by the way great video as always,keep it up, you're a great mechanic.
GOOD JOB , LEARNED A LOT ,THANK -YOU....
lol i dunno...prob a bill for shure
I love you too sweety
didn't tell me anything.....................
if you say uuh or um one more time......
Uuh
Um
Wow so simple! Just go buy this special tool and you can test it!
Thanks for the useless video.