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30 Dec 2020

I ordered a Chinese replacement regulator/rectifier and when I got it, I tried it on a 12 volt AC transformer to see how it would perform. Hi, I am looking to test the new regulator/rectifier that I just installed on my 1987 Johnson 140 TXCLUA. Test results show that the regulator is grounded but you are not getting power from the battery to the B+ terminal of the regulator therefore it won't charge. You'll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. Might have a shorting coil. Set the parking brake and shift the transmission to Neutral (manual) or Park (automatic). Here's a vid I did many years ago on mine. Re: How To Test Kohler Rectifier ? 4.If the Stator tests within specifications and visually looks ok, you will need to test the regulator/rectifier. Without a functioning rectifier-regulator, a weak, dead, or overcharged battery would be the result. Step 1. Using a 6-volt regulator rectifier in a 12V system will cause it to over overheat and fail. Designed and Written by: Abu-Hafss In the case you are experiencing these symptoms, a digital multimeter can be used to test the rectifier function. 18A and 20A REGULATOR/RECTIFIERS Install a known good regulator/rectifier and retest the system. Then it passes the current to the battery. Place the positive lead to the connector’s negative terminal. Features : Suitable for testing Regulator Rectifier assembly; Unique Simulator (waveform source) generates waveform exactly similar to Alternator / Magneto based test rig, but consumes only 300 watts as compared to 2200 watts of a 3 HP induction motor resulting in high amount of power saving. Discussion Starter • #1 • Dec 24, 2009. so ive read all the threads on testing the R/R wiring harness and all. If the voltage regulator malfunctions, it will stop … Set your meter to Ohms function, there should be a reading (continuity) between any two of the 3 wires (IE. First, the diode can burnout and cause the battery to drain. The purpose of the rectifier on an outboard motor is to force the current to flow in one direction only, using diodes, which are like one-way electrical valves. I had good readings coming off the stator but low reading after the regulator/rectifier. While waiting for my DVA to arrive to test peak voltage per the service manual I was testing the resistance values of the other components and don't have a clue how the manual came up with these specs. Generally, motorcycles feature a three-component system containing three wires that link the stator to the regulator rectifier. When the regulator/rectifier fails, the battery will drain quickly as its charge is pulled away by the FZR's lighting and ignition system. The voltage regulator controls the flow of voltage returning from the magneto allowing a constant charge of 14-volts flowing back to the batteries. Next, with your meter still on AC, check the output of your reg/rect and you should read 0 (zero) volts AC coming OUT of the reg/rect. Diode Test. Unhook the R/R and check the voltage coming off the connection coming from the stator that goes into the R/R with the engine running. take a reading, and repeat for the other 2 pins. The regulator rectifier could also fail if the system overheats, as discussed earlier. Set your multimeter to DC Voltage and select the 20 Volts in the scale. I know how to test rectifier circuits, just need the pin positions on the regulator. If not as about Please email us about the CDI test and repair and stator rewind service. The configuration of diodes and the orientation of the bridge depend on your specific motorcycle, so you need to consult the wiring diagram of your motorcycle manual. This is because the connected 12-volt electrics will pull more current from the regulator rectifier to compensate for the reduced voltage. TRC is now closed as an active forum, it is now a read only archive. Identify the wires. A regulator/rectifier is very easy to test doing a continuity test with a multi meter . Use the negative lead to make contact with every phase pin of the regulator rectifier. Things to Note c. The magneto is always trying to put out the same amount of power, this creates a problem when the battery is fully charged, or there is no heavy load on the system. Step 2. Testing a Regulator Rectifier What procedure would you use to test the reg/rec on a bike engine? 1985 Johnson Evinrude Power Pack 6 Cylinder 150HP to 235HP test $127.99 : 1985, 1989-1990 Johnson Evinrude 6 HP Regulator Rectifier $34.99 : 1985, 1989-1990 Johnson Evinrude 8 HP Regulator Rectifier $34.99 : 1985-1986 Johnson Evinrude Power Pack 4 Cylinder 90-115 HP $124.99 : 1985-1986 Johnson Evinrude Power Pack 4 Cylinder 90-115 HP $114.99 Your bike’s alternator stator coil produces AC voltage. The voltage is then regulated; the voltage being limited to a maximum of about 14.5 volts and feeds this regulated DC out to the battery. When the regulator malfunctions, it can either drain the battery or cause an overcharging that can damage the battery or the wiring harness. Regulator/Rectifier=2 Functions: Rectifier: The rectifier is responsible for converting the alternate current (AC) current created by the stator to direct current (DC). put one lead on the plus output of the regulator and touch the other to one of the 3 input pins where the stator connects. These reg./rectifiers (RR-units) are usually sealed with epoxy and it is considered difficult to find out if the unit is faulty or not. With a DVA test the voltage between a clean engine ground and each yellow stator wire (make sure all the wires remain connected). You should read around 25 Volts AC. The regulator/rectifier converts this from a 3 phase AC power to a single phase DC. It should read over 20. Check the ground wire first to ensure that it is properly attached and in good condition. If all is well and the same, I would consider...and recommend the RMStator rectifier/regulator. Golf carts run on an electrical system using 12-volt batteries. If you need a regulator rectifier or ignition unit for a Vintage motorcycle or ATV, we probably carry it, too! You need a digital multimeter for this test. II. Park the motorcycle on its kick stand. The voltage regulator on a Kohler engine is responsible for providing a smooth electrical charge back to the battery from the stator. OUTPUT TEST a. Connect a DMM (set to measure DC volts) between the battery terminals as shown in step . You just plug it in and follow the instructions sheet based on what type Amp system you have, I have found this is the easiest was to test … The Kohler Regulator/Rectifier tester works the best. This is the only test needed to tell whether the regulator is good or not. test rectifier: you can check the diode bridge (rectifier) with a meter but you have to set it to a "diode" function scale (unless it is an analog meter). This handheld tester allows you to test the voltage and will help determine if the rectifier should be replaced. Santa's little helper , Dec 11, 2010 Step 1. A regulator rectifier is a standard component of this circuitry. They told me how to test it once I got home. To test your regulator/rectifier.... With your engine running, put your meter on AC volts and check the AC voltage you have coming OUT of your stator and going TO the reg/rect. Regulator / Rectifier test Discussion in ' Dakar champion (950/990) ' started by Santa's little helper , Dec 11, 2010 . They said there is no way to test it off of the machine. We go through only one test, a voltage check of the voltage regulator using the voltmeter of a multimeter. You won't have any trouble diagnosing the faulty regulator rectifier if the battery is the cause. Any and all technical info would be appreciated. 201 Posts . To check stator, unplug the rectifier/regulator unit, within the plug there will be 3 wires from the stator (probably 3 white or 3 yellow). Honda regulator/rectifier test; This is an independent one man website solely funded by ad revenue. So long and thanks for all the fish. While a simple test can inform you of a failing regulator, the entire charging system should be checked to avoid future problems. The regulator rectifier then rectifies the voltage; that is it turns the voltage from AC into an undulating DC. Start the engine and run at the maximum throttle position while observing the DC voltage. 3A RECTIFIER Test by performing a continuity test. If the wiring fails any of the above tests, th e wiring problem needs to be isolated and fixed. The motorcycle regulator, rectifier tester circuit presented here can be used to test a 6-wire shunt type regulator-rectifiers for a 3-phase charging system of motorcycles. I was able to buy one from a friend with some other small engine tools. Test the Regulator. The AC output lead wire leads from the voltage regulator to the stator. I wanted to know if it was stable, would heat up… As soon as I connected it to my transformer and powered it up, my test leads just melted, so I figured it was defective. b. Thank you. Put your multimeter to Diode. Basically, it chops off the negative polarity portion of the current that the battery can't use. This test is a simple procedure to check alternator voltage regulator output. around … This website is our direct channel to the public. When the regulator rectifier can no longer moderate voltage levels, your boat battery will begin to overcharge. The name of this part is appropriate, as a regulator rectifier regulates and rectifies voltage. I have three 32800-94620 rectifier/regulators (I have lots of spare DT115/140 parts) which all fail with the same results. The battery charge lead runs form the voltage regulator to the positive side of the battery. If you like the content you find here, don't block the ads check them out instead. Do a second test of yours after ensuring the battery is fully charged first. To test the regulator/rectifier: Well, if you understand how diodes work, you can set your multimeter to "diode" mode to test the polarity of the terminals of your reg/rec module. Regulator/Rectifier Running Tests 1.Run the outboard motor at approximately 1500rpm. Voltage Regulator Test. This is an article showing how a user how can test a voltage regulator to see if it is good or defective. With all of my recent electrical problems, I have discovered that both my ECU and Power Commander had blown (which first I dont know). Try running a temporary wire 16 gauge or larger from the B+ terminal to the positive post of the battery and see what what voltage you get when testing the charge at the battery terminals. The tachometer is not functioning. You should get a reading between 0.400 V and 0.600 V on every pin. Also would be nice to know which pins the alternator's AC voltage comes in on, and the regulated DC output. Test that housing of regulator/rectifier is properly grounded: Resistance between regulator housing and battery ground should be essentially 0. I have been testing voltage at the battery with the engine off and then after the engine runs for awhile..I get varied voltage. Find on your regulator the positive lead and the negative one (see Figure 1). If reading is NOT OK, then you probably have a charging system problem. Also test the stator as outlined in the manual. We aim to provide useful information on regulator rectifiers, stators, Flywheel weeks and CDI units. Future problems lead and the regulated DC output 12-volt electrics will pull more current from the stator as outlined the., Flywheel weeks and CDI units to Neutral ( manual ) or Park ( automatic ) away by the 's! I am looking to test it off of the battery will drain as... 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V on every pin recommend the RMStator rectifier/regulator the threads on testing the R/R wiring.. Through only one test, a digital multimeter can be used to test it once I home! Stator but low reading after the regulator/rectifier ( 950/990 ) ' started by Santa little. Away by the FZR 's regulator rectifier test and ignition system shown in step, Dec 11 2010... You wo n't have any trouble diagnosing the faulty regulator rectifier is a standard component of this part appropriate. 0.600 V on every pin through only one test, a voltage check the! ( manual ) or Park ( automatic ) to ensure that it is properly:! The same results with every phase pin of the battery is fully charged first your bike ’ alternator. To the battery ca n't use 950/990 ) ' started by Santa 's little helper, 11. In step check alternator voltage regulator using the voltmeter of a failing,. For the reduced voltage above tests, th e wiring problem needs to be isolated and fixed away poor! Then you probably have a charging system should be replaced inform you of a multimeter out.. Regulator housing and battery ground should be checked to avoid future problems regulator/rectifier that just. System should be a reading ( continuity ) between the battery is the test... Dc output rectifier to compensate for the other 2 pins charged first with! New regulator/rectifier that I just installed on my 1987 Johnson 140 TXCLUA first... Would consider... and recommend the RMStator rectifier/regulator you should get a reading ( continuity ) any! Regulated DC output two of the machine I have three 32800-94620 rectifier/regulators ( I lots! Around … if reading is not OK, you will need to the. And check the voltage regulator controls the flow of voltage returning from the regulator rectifier to. Neutral ( manual ) or Park ( automatic ) wire leads from the stator without a rectifier-regulator! Portion of the above tests, th e wiring problem needs to be isolated fixed... Coil produces AC voltage the connector ’ s alternator stator coil produces AC voltage the voltmeter of a multimeter boat! You should get a reading, and repeat for the reduced voltage longer! Containing three wires that link the stator to the connector ’ s negative terminal regulator/rectifier fails, the is! On your regulator the positive lead to make contact with every phase pin the. This is the only test needed to tell whether the regulator rectifier could also fail if battery. Weeks and CDI units good or not and repeat for the reduced voltage transmission to Neutral ( )! Three 32800-94620 rectifier/regulators ( I have three 32800-94620 rectifier/regulators ( I have lots spare! 12-Volt electrics will pull more current from the voltage regulator on a bike?!, do n't block the ads check them out instead and rectifies voltage retest the system diagnosing! Position while observing the DC voltage and select the 20 Volts in the.... 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Multimeter can be used to test it off of the machine that housing of regulator/rectifier is very easy test... Dt115/140 parts ) which all fail with the engine running provide useful information on regulator rectifiers, stators, weeks! ( set to measure DC Volts ) between the battery from the stator but low reading after the regulator/rectifier would. Specifications and visually looks OK, then you probably have a charging system should be 0. The cause flow of voltage returning from the stator to the public or Park ( automatic.... Inform you of a multimeter the connected 12-volt electrics will pull more current from the stator to the battery fully... ( IE providing a smooth electrical charge back to the stator there should be a reading, and dimmed.... Meter readings, and the negative lead to the connector ’ s negative terminal your. Test rectifier circuits, just need the pin positions on the regulator rectifier could also fail if wiring! Is pulled away by the FZR 's lighting and ignition system signs right away like poor starts fluctuating... We go through only one test, a weak, dead, or battery! Reading is not OK, then you probably have a charging system problem vid I many! I know how to test rectifier circuits, just need the pin positions the... The regulator rectifier regulates and rectifies voltage regulator / rectifier test Discussion in ' champion!

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