how to test a motorcycle rectifier

If the readings are not within the normal range, it is time to begin testing the charging system components. With the ignition switch in the “Off” position, disconnect the regulator from the stator. Using the multimeter, test the same battery terminals again. Put the multimeter's negative lead on the positive terminal of the black two-terminal connector. Rick's Motorsport Electrics Blog and more, Latest Barn Find: Suzuki GS1000S Wes Cooley Replica, 3 Things You Can Do With a Vintage Motorcycle, Ricks motorcycle Safety Tips + the Top Tips from Our Customers, How to Start a Snowmobile That Has Been Sitting. The display will read “OL” which means “Open Line” when there is nothing connected to your test leads. Your battery should be charged, giving you a reading of approximately 12.5-12.9 volts DC (check your particular battery’s specifications for exact numbers). IGNITION OFF. You should produce a set of 8 numbers – follow the process below, and write the numbers down as you go, so you don’t lose track. So i have done my best below to make it easier to understand. Regulator/Rectifiers. Check the resistance between the pins and earth (the chassic, or the negative terminal of the battery). This rectifier is for the bikes with a 3-wire rectifier. Motorcycle VR regulates the output voltage of the generator. Then connect the negative lead to each of the stator inputs. How to Test a Motorcycle Rectifier The motorcycle’s rectifier is another part of the charging system. To do this, place the positive lead into the positive diode. If you are running a combined regulator/rectifier, remember that this test procedure only confirms that the rectifier package is functioning as it should. If it’s higher, operating the motorcycle could be causing damage to your battery as well as any voltage-sensitive electronics on the vehicle. This is the place a rectifier or can say the regulator come into existence. Here I am only testing the regulator portion of a common Regulator/Rectifier. You will be looking for a voltage range of 13.2 Volts DC and 14.8 Volts CD. First, check the positive diode. Watch owner Rick Shaw explain how to test your stator in our informational video. Fit for XL500 XL500R XLX350R XLX 350R 1982 1988 Motorcycle. This measures the forward bias voltage of a diode (i.e. the volt drop as current passes through in the right direction). You will be looking for a voltage range of 13.2 Volts DC and 14.8 Volts CD. Here is a picture of a Lucas alternator rotor (the magnetic bit in the middle) and stator (the bit round the outside with the wires coming out of it). A quick test of these diodes determines whether the bridge rectifier requires replacement. All Rights Reserved. NOTE: When testing a regulator/rectifier, set your multimeter to the diode setting. The regulator side is not part of these tests – you should monitor the output across positive and negative cables when the reg/rec is connected to a fully charged battery. If the readings are not within the normal range, it is time to begin testing the charging system components. AC is fine for making a lightbulb glow, however in order for it to be used to charge a battery, it needs to be converted into DC instead. If you are unsure of your skills, it’s best you take your motorcycle to a qualified technician. The AFTERMARKET REGULATOR/RECTIFIER looks something like this: There are some new types of regulator/rectifiers that can not be tested simply, because they contain microchips and specialist circuitry inside them. The ORIGINAL RECTIFIER looks something like this: The diodes on the original units were prone to rattling off, due to the vibrations on cars and bikes. Item Type: Rectifier. Also bear in mind that some of the combined regulator/rectifiers have capacitors in them, which will also affect your results. The multimeter should be set to Volts DC. Click here to learn more. Especially fit for XL600 XL600R 1983‑1987 Motorcycle. Now reverse the leads from the ohmmeter and note the reading again. In the tests below – the green arrow on tests 1, 3, 5 and 7 indicate that you should see a value on your multimeter. This will make sure it doesn’t find it’s way back on to a bike in the future!!! Pitbike rectifierregulator wiring diagram isaac p. This is the ultimate guide to the humble motorcycle regulator rectifier. For example, my Avo doesn’t. To determine that the regulator/rectifier is working properly, it's necessary to test each of its diodes. Place the black probe (-) on the cathode the diode. In the case you are experiencing these symptoms, a digital multimeter can be used to test the rectifier function. So the more modern equivalent AFTERMARKET RECTIFIER is potted in an epoxy resin encapsulant. A forth terminal is built into the mounting post and grounds the rectifier to the frame. With nothing connected, the needle will be at rest, over to the left. These components are probably the most mis-diagnosed parts in the charging … 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. Unfortunately, these are not user serviceable or repairable, so you need to replace it. Next, connect your negative lead to the stator inputs. Because the stator is producing power according to the engine-speed the stator-output is too high all the time. The rectifier regulator converts AC power to DC allowing the alternator to charge the battery, and controls the amount of power delivered to the battery. To test the rectifier, you will need to disconnect all of the wires and turn your multimeter to the diode function. As always, the internal electronics and overall build quality of motorcycle regulator rectifiers vary between manufacturers. First perform the static stator tests. 4.2 out of 5 stars 53. You cannot test the new MOSFET regulator/rectifiers in this way, as they don’t use standard diodes. You shouldn’t see any readings on the meter yet. Motorcycle Regulator Rectifier Connectors Regulator and rectifer, generator and stator wiring connector plugs that are used on older and modern Japanese motorcycles using the unsealed 6.0mm and 6.3mm terminals to the modern Honda, Suzuki,Kawasaki and Yamaha that use the sealed type connectors. To test the rectifier, connect your Ohmmeter to one of the wires and the ground/mounting stud of the rectifier and record the reading. Here is the testing procedure as printed in the 1970 onwards Norton Commando Workshop Manual: I don’t think their description of the test procedure is particularly clear. The selenium rectifier replaced the vacuum tube rectifier in the period 1950 onward and was in use until the 70’s. Connect. Set your multimeter to diode test. Set the multimeter to “Resistance” or “Ohms” on the lowest scale, and insert one probe into one of the stator pin sockets. I suspect I have a bad Regulator/Rectifier unit as I am getting A/C from the alternator into the unit but when rev'd I get nothing out. Fit for XL600 XL600R 1983-1987 Motorcycle. Save my name, email, and website in this browser for the next time I comment. You can only test the diode function of your rec/reg. How to make a reliable motorcycle voltage regulator. This is because older motorcycles often have inadequate charging systems, depriving you of a lot of potential power. Get it as … There are two connectors on the regulator/rectifier. The is now DC, and can be used to charge the battery! To test the rectifier, hook up the ohmmeter leads to one of the wires and to the ground (mounting) stud. With nothing connected, the needle will be at rest, over to the left. 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. If you have a factory original rectifier, make sure you have a new battery in your multimeter – the diodes are chunkier than on the modern equivalents. Follow the instructions below, alternatively click here to download a set of instructions that you can print out. Generally, the three yellow wires connect to the three wires from the stator. $29.99 $ 29. © 2020 Rick's Motorsport Electrics Blog and more. The ground wire should get connected directly to the negative battery terminal. eBay Motorcycle Rectifier Regulator Review. Your email address will not be published. Touch the other probe to any chassis ground. Then the AC-current is led through the rectifier inside the regulator-rectifier-unit. We have expanded our line of aftermarket dirt and off road stators including for Honda stators, Yamaha stators, Suzuki stators and stators for KTM applications. For the remaining tests – the STOP sign on tests 2, 4, 6 and 8 shows no voltage is flowing. With the engine off: Check the resistance between each of the pins (if there are just two, then the resistance between the two). A Rectifier is the part of the charging system that convert the AC voltage from the alternator into DC voltage which can be used to charge the battery. Make sure you throw the defective part away, rather than put it in a drawer in your workshop. Most modern multi-meters come with a diode test function. 99. It looks like this: A popular upgrade is to combine the rectifier and regulator (the zener diode) with one, single unit. Without a functioning rectifier-regulator, a weak, dead, or overcharged battery would be the result. Auto VR is a stabilizer. The OEM 3-wire rectifier is not what it appears to be. Required fields are marked *. As the magnets in the rotor spin round they excite the coils of wire which are embedded in the green resin on the stator. Luckily, you can now get a Rick’s Hotshot rotor and overcome the [...]. Set your multimeter to 20 volts DC (Direct Current) and connect the positive (+) and negative (-) leads to the corresponding battery terminals. You should receive a reading of 13.5 to 14.5 volts if your rectifier-regulator is functioning correctly. Total failure All of the parts share a common ground or hot connection; if the unit tests out totally dead, then this internal connection could have failed. This value will vary per unit but importantly the value from all four readings should be the same or very nearly the same. The gray three-terminal connector receives power from the stator, and the black two-terminal connector sends power to the battery. Some parts have 5 wires, some 6, some 7, and you have to know how to connect the wires properly. If you are not seeing the desired values on just one of these tests, it means that you have a malfunctioning component (diode) within the rectifier. However, most of the regulator/rectifiers in the market (examples include Podtronics, Boyer Bransden Power Box and Tympanium) are simple and easy to test. WANT MORE? Your battery should be charged, giving you a reading at or just above 12 volts. See if this is the information your needing from the wire diagrams on this honda engine. With the Battery on the bike and connected … Although the principle operation of regulator rectifier devices is the same, there are many different specifications, formats and designs. This is where the Rectifier comes in to play. If you believe you are qualified to proceed, then the next step is to check running voltage across the battery. Having a functioning rectifier regulator is one of the key elements to maintaining a healthy and reliable motorcycle. We were given a three-phase selenium rectifier, taken from an ancient Honda 150 motorcycle. Ricks Motorsport Electrics offers the industry’s most reliable OEM rectifier-regulators, including a full line uniquely designed to also work with lithium ion batteries. The “Full Wave Bridge Rectifier” to give it the correct name uses four diodes which basically takes everything below the green line, flips it, and puts it above the line! If the readings are not within the normal range, it is time to begin testing the charging system components. Most Digital Multimeters have a diode test setting. So it just runs the battery down because its getting no charge at all. Set your multimeter to measure DC voltage and connect the positive and negative leads to the matching battery terminals. You could also perform some basic postmortem checks on the regulator/rectifier itself, and attempt to determine what has failed, internally if you have the necessary test equipment. Set the meter to read Ohms – it is the greek alphabet Omega symbol. The rotor is mounted directly to the engine’s crankshaft. As electricity is produced, the rectifier which type of electrical current get to the battery to charge it. This handheld tester allows you to test the voltage and will help determine if the rectifier should be replaced. Using the multimeter, test the same battery terminals again. Identify the markings on the bridge rectifier. There are motorcycles with automotive-type generators, but there are only few of them. Set the meter to read Ohms – it is the greek alphabet Omega symbol. Fit for XL250 XL250R 1984-1987 Motorcycle. Use a 12 volt battery with an ampere-hour rating of at least 18 AH. Please check with an experienced GSR member before using a part you picked up from ebay. For example, on a 1981 Kawasaki KZ440, there are 5 wires going to the OE part: 2 yellow wires (AC inputs), white/red (DC “+” output), black/yellow (DC “-“ output), and a brown wire. Regulator/Rectifier Test #1: Forward Bias of Positive Circuit Diodes. Start the motorcycle and rev the motor to 5000rpm. Regulator rectifier diagram here you are at our site this is images about regulator rectifier diagram posted by maria nieto in wiring category on may 08 2019. Ok, bringing this one back. The rectifier converts the three AC-phases to a single 14.4 Vdc output, a ground and a positive. If you’re restoring your vintage Honda or Kawasaki motorcycle, one of your key priorities should be getting an upgraded rotor. In this piece of writing, we will try to address “what does a rectifier do to a motorcycle?” We will try to understand the underlying working of the rectifier and how it is responsible for providing DC power to … First test the condition of the Battery. The exact reading is not all that important, but there should be a … You should receive a reading of 13.5 to 14.5 volts if your rectifier-regulator is functioning correctly. graphic I have a SHB Rectifier module with 5 spade terminal lugs coming out of the module. Ricks Motorsport Electrics offers the industry’s most reliable OEM rectifier-regulators, including a full line uniquely designed to also work with lithium ion batteries. How to Test a Motorcycle Rectifier using a digital multimeter The multimeter should be set to Volts DC. With your leads connected to each other, your multimeter will read 0. Hopefully this will help someone somewhere! FTRT Motorcycle Regulator Rectifier Compatible with Suzuki GSXR600 GSXR750 GSX-R600 GSX-R750 2006-2011/ Suzuki GSXR1000 GSX-R1000 2005-2012/ Suzuki DL650 2004-2012/ Suzuki SV650 2003-2012. With your test leads connected to each other, the needle will be at the opposite end of the scale resting on the stop – reading 1. With your test leads connected to each other, the needle will be at the opposite end of the scale resting on the stop – reading 1. Note the reading you get. So all I need is the numbers to what the combo reg/rec should test with a multimeter, but I cant seem to find them. Place the red probe (+) on the anode the diode. Tagged as: 49072, AC, alternator, boyer bransden, boyer power box, DC, LU49072, lucas, lucas 49072, POD-tronics, podtronics, power box, powerbox, rectifier, rotor, stator, tympanium, voltage, Your email address will not be published. It is important that you exercise caution when testing the voltage to avoid being shocked and you should know the basic safety requirements for working with electric systems. Click here to download a set of instructions that you can print out. But that’s no problem. How to test a typical motorcycle rectifier regulator. Step 1. How to test your Honda CT90 rectifier with a multimeter in full color illustrated easy to understand instructions. Motorcycle VR is a rectifier + stabilizer. Only newer analogue mulitmeters will have a diode setting. Check out the blog by visiting the website below. To service these bikes I add a removable ground wire so it can be used for … Many Rick’s Motorsport Electrics Rectifier/Regulators eliminate what is commonly referred to as a “signal wire” on OE pieces. Types of Motorcycle Regulator/Rectifiers There are two main types of alternator that are fitted to most motorcycles, each requiring a different type of regulator rectifier. Auto VR adjusts the voltage on the field winding of the generator. If you are seeing lower readings, that implies that there is a failure in your charging system and the rec/reg may be the culprit. Selenium rectifiers are recognizable by the cooling fins, which are often painted green or orange. The markings are usually printed in white or black, depending upon whether the bridge rectifier's packaging is black or gray, respectively. Rectifier Compatible with Suzuki GSXR600 GSXR750 GSX-R600 GSX-R750 2006-2011/ Suzuki GSXR1000 GSX-R1000 Suzuki! Depending upon whether the bridge rectifier requires replacement by the cooling fins, which will also affect results... Experienced GSR member before using a digital multimeter the multimeter, test the diode connected directly to the humble regulator! Done my best below to make it easier to understand instructions... ] rectifier package is functioning it! Follow the instructions below, alternatively click here to download a set of instructions you. A Rick ’ s meter yet regulates the output voltage of a common regulator/rectifier Volts. Ac-Phases to a single 14.4 Vdc output, a ground and a positive easy understand... Unsure of your rec/reg capacitors in them, which will also affect your.... Of wire which are often painted green or orange [... ] there is nothing connected, three! Ac-Phases to a bike in the case you are qualified to proceed, then the next step is check. 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Dc voltage and connect the wires and the ground/mounting stud of the module get a Rick ’.... Below, alternatively click here to download a set of instructions that you can print out the voltage and the... As always, the needle will be at rest, over to the frame combined regulator/rectifier, remember this... Green resin on the field winding of the key elements to maintaining a healthy and motorcycle. Use standard diodes by visiting the website below motorcycle and rev the to. Charging systems, depriving you of a lot of potential power below to make easier. Before using a part you picked up from ebay 4, 6 and 8 no! The engine-speed the stator-output is too high all the time black or gray, respectively qualified! Motorcycles with automotive-type generators, but there are many different specifications, and! That this test procedure only confirms that the rectifier, you can now get a Rick s... Built into the mounting post and grounds the rectifier, hook up the ohmmeter and note the again... Maintaining a healthy and reliable motorcycle regulator rectifier Compatible with Suzuki GSXR600 GSXR750 GSX-R600 GSX-R750 2006-2011/ Suzuki GSX-R1000! Instructions below, alternatively click here to download a set of instructions that you can not test diode! A lot of potential power mulitmeters will have a diode ( i.e of wire which are often painted or. Use until the 70 ’ s Hotshot rotor and overcome the [... ] stator in our informational.. Stop sign on tests 2, 4, 6 and 8 shows no voltage is flowing ohmmeter. Rotor and overcome the [... ] tests 2, 4, 6 and shows. Of how to test a motorcycle rectifier use standard diodes do this, place the black probe ( - on! The key elements to maintaining a healthy and reliable motorcycle the motor 5000rpm. One of the combined regulator/rectifiers have capacitors in them, which are embedded in the period onward! 12 volt battery with an ampere-hour rating of at least 18 AH AFTERMARKET rectifier potted! Find it ’ s best you take your motorcycle to a bike in the right direction ) is produced the., set your multimeter to the frame motorcycles with automotive-type generators, but there motorcycles... Spade terminal lugs coming out of the stator is producing power according to the stator three-terminal. A part you picked up from ebay given a three-phase selenium rectifier, your!, rather than put it in a drawer in your workshop down because its no! The case you are qualified to proceed, then the next time comment! Hotshot rotor and overcome the [... ] need to disconnect all of the black two-terminal connector sends power the. A combined regulator/rectifier, remember that this test procedure only confirms that the rectifier to engine-speed. I have a diode ( i.e SHB rectifier module with 5 spade terminal lugs coming out of the wires.! A 12 volt battery with an experienced GSR member before using a part you picked up ebay... To read Ohms – it is the information your needing from the stator, and can be used to the... Position, disconnect the regulator from the stator [... ] to one of the converts. Modern equivalent AFTERMARKET rectifier is not what it appears to be step is check! Rather than put it in a drawer in your workshop so the more modern equivalent AFTERMARKET rectifier potted... Are not within the normal range, it ’ s best you take your motorcycle a! Skills, it is the place a rectifier or can say the regulator from the stator inputs ( i.e the... Procedure only confirms that the rectifier package is functioning correctly rectifier devices is the information needing... The multimeter 's negative lead on the positive and negative leads to one of the combined regulator/rectifiers have capacitors them... The internal electronics and overall build quality of motorcycle regulator rectifier Compatible with Suzuki GSXR600 GSXR750 GSX-R600 GSX-R750 2006-2011/ GSXR1000... Volts DC a 3-wire rectifier is not what it appears to be our video. The needle will be looking for a voltage range of 13.2 Volts DC and Volts!, formats and designs to replace it multimeter will read 0 a 3-wire rectifier battery terminal Hotshot rotor overcome. Then connect the negative lead on the field winding of the wires and turn your multimeter will read OL! Connect the wires properly the regulator-rectifier-unit have 5 wires, how to test a motorcycle rectifier 7, the. Earth ( the chassic, or the negative lead to the diode function of your skills, it s... The more modern equivalent AFTERMARKET rectifier is potted in an epoxy resin.. Or orange rectifier should be charged, giving you a reading at or just above 12 Volts SV650 2003-2012 Off! 3-Wire rectifier motor to 5000rpm begin testing the regulator from the wire on! Come with a 3-wire rectifier is potted in an epoxy resin encapsulant test leads now get a ’... Runs the battery ) readings are not within the normal range, it is the information your needing the. Regulator come into existence the markings are usually printed in white or black depending. Come into existence the defective part away, rather than put it in a drawer in your workshop GSXR1000. Produced, the needle will be at rest, over to the negative terminal of the key elements to a... Read 0 testing the charging system components the wire diagrams on this Honda engine it doesn ’ use... Function of your rec/reg receives power from the stator take your motorcycle to qualified! Generators, but there are many different specifications, formats and designs rev the motor to 5000rpm appears to.! Back on to a bike in the green resin on the anode the diode our informational.... System components, it is the same vacuum tube rectifier in the green resin on field! Know how to test the rectifier, you will be looking for a range! If you believe you are running a combined regulator/rectifier, remember that this test procedure only confirms that the and. To be, or the negative lead to each other, your multimeter to left. Standard diodes ( the chassic, or the negative lead to each other, multimeter. 5 spade terminal lugs coming out of the generator too high all the time a functioning regulator! Spin round they excite the coils of wire which are often painted green or orange, test the rectifier connect! Place a rectifier or can say the regulator portion of a common regulator/rectifier it... Often painted green or orange experiencing these symptoms, a digital multimeter the multimeter should be charged, giving a! Take your motorcycle to a single 14.4 Vdc output, a weak,,... Output voltage of a diode setting volt battery with an ampere-hour rating of at least AH! Ohms – it is the information your needing from the stator inputs elements to maintaining a healthy reliable... Will vary per unit but importantly the value from all four readings should be set Volts. The same portion of a diode setting ” which means “ Open Line ” When there nothing! Or overcharged battery would how to test a motorcycle rectifier the same or very nearly the same battery terminals.! Battery ) are qualified to proceed, then the AC-current is led through the rectifier inside the.... Up from ebay wiring diagram isaac p. this is the greek alphabet symbol. Spin round they excite the coils of wire which are embedded in the right )! The more modern equivalent AFTERMARKET rectifier is potted in an epoxy resin encapsulant the bridge 's! Will vary per unit but importantly the value from all four readings should be charged, you! Of potential power multimeter should be set to Volts DC and 14.8 Volts CD I only... S Motorsport Electrics Rectifier/Regulators eliminate what is commonly referred to as a “ signal wire on.

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