how to test a motorcycle rectifier

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The markings are usually printed in white or black, depending upon whether the bridge rectifier's packaging is black or gray, respectively. Because the stator is producing power according to the engine-speed the stator-output is too high all the time. IGNITION OFF. 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. Many Rick’s Motorsport Electrics Rectifier/Regulators eliminate what is commonly referred to as a “signal wire” on OE pieces. It looks like this: A popular upgrade is to combine the rectifier and regulator (the zener diode) with one, single unit. 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. If it’s higher, operating the motorcycle could be causing damage to your battery as well as any voltage-sensitive electronics on the vehicle. The OEM 3-wire rectifier is not what it appears to be. The gray three-terminal connector receives power from the stator, and the black two-terminal connector sends power to the battery. For the remaining tests – the STOP sign on tests 2, 4, 6 and 8 shows no voltage is flowing. Regulator/Rectifier Test #1: Forward Bias of Positive Circuit Diodes. The multimeter should be set to Volts DC. Your battery should be charged, giving you a reading at or just above 12 volts. 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). 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. With nothing connected, the needle will be at rest, over to the left. This value will vary per unit but importantly the value from all four readings should be the same or very nearly the same. Follow the instructions below, alternatively click here to download a set of instructions that you can print out. 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POD-tronics, podtronics, power box, powerbox, rectifier, rotor, stator, tympanium, voltage, Your email address will not be published. If the readings are not within the normal range, it is time to begin testing the charging system components. Save my name, email, and website in this browser for the next time I comment. Regulator/Rectifiers. 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. Get it as … Required fields are marked *. With your leads connected to each other, your multimeter will read 0. How to Test a Motorcycle Rectifier using a digital multimeter The multimeter should be set to Volts DC. A forth terminal is built into the mounting post and grounds the rectifier to the frame. This will make sure it doesn’t find it’s way back on to a bike in the future!!! Only newer analogue mulitmeters will have a diode setting. If you believe you are qualified to proceed, then the next step is to check running voltage across the battery. So it just runs the battery down because its getting no charge at all. First test the condition of the Battery. Generally, the three yellow wires connect to the three wires from the stator. Next, connect your negative lead to the stator inputs. Place the black probe (-) on the cathode the diode. Fit for XL600 XL600R 1983-1987 Motorcycle. Click here to download a set of instructions that you can print out. To determine that the regulator/rectifier is working properly, it's necessary to test each of its diodes. Most modern multi-meters come with a diode test function. 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. Motorcycle VR is a rectifier + stabilizer. So the more modern equivalent AFTERMARKET RECTIFIER is potted in an epoxy resin encapsulant. WANT MORE? 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. Hopefully this will help someone somewhere! 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. 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. To service these bikes I add a removable ground wire so it can be used for … This handheld tester allows you to test the voltage and will help determine if the rectifier should be replaced. Identify the markings on the bridge rectifier. You should receive a reading of 13.5 to 14.5 volts if your rectifier-regulator is functioning correctly. Pitbike rectifierregulator wiring diagram isaac p. This is the ultimate guide to the humble motorcycle regulator rectifier. 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. © 2020 Rick's Motorsport Electrics Blog and more. 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. 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. Ok, bringing this one back. Now reverse the leads from the ohmmeter and note the reading again. The is now DC, and can be used to charge the battery! How to Test a Motorcycle Rectifier The motorcycle’s rectifier is another part of the charging system. How to test your Honda CT90 rectifier with a multimeter in full color illustrated easy to understand instructions. 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. Place the red probe (+) on the anode the diode. Your email address will not be published. With the Battery on the bike and connected … With nothing connected, the needle will be at rest, over to the left. Start the motorcycle and rev the motor to 5000rpm. Using the multimeter, test the same battery terminals again. This is the place a rectifier or can say the regulator come into existence. Without a functioning rectifier-regulator, a weak, dead, or overcharged battery would be the result. How to test a typical motorcycle rectifier regulator. Set your multimeter to diode test. With the ignition switch in the “Off” position, disconnect the regulator from the stator. If you are unsure of your skills, it’s best you take your motorcycle to a qualified technician. For example, my Avo doesn’t. If you are running a combined regulator/rectifier, remember that this test procedure only confirms that the rectifier package is functioning as it should. Here I am only testing the regulator portion of a common Regulator/Rectifier. The rectifier converts the three AC-phases to a single 14.4 Vdc output, a ground and a positive. This measures the forward bias voltage of a diode (i.e. Click here to learn more. 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. Fit for XL500 XL500R XLX350R XLX 350R 1982 1988 Motorcycle. So i have done my best below to make it easier to understand. If the readings are not within the normal range, it is time to begin testing the charging system components. 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! To test the rectifier, connect your Ohmmeter to one of the wires and the ground/mounting stud of the rectifier and record the reading. You can only test the diode function of your rec/reg. eBay Motorcycle Rectifier Regulator Review. graphic I have a SHB Rectifier module with 5 spade terminal lugs coming out of the module. Touch the other probe to any chassis ground. Watch owner Rick Shaw explain how to test your stator in our informational video. Connect. Check the resistance between the pins and earth (the chassic, or the negative terminal of the battery). As always, the internal electronics and overall build quality of motorcycle regulator rectifiers vary between manufacturers. Also bear in mind that some of the combined regulator/rectifiers have capacitors in them, which will also affect your results. Luckily, you can now get a Rick’s Hotshot rotor and overcome the [...]. 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. 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. As the magnets in the rotor spin round they excite the coils of wire which are embedded in the green resin on the stator. Put the multimeter's negative lead on the positive terminal of the black two-terminal connector. 99. These components are probably the most mis-diagnosed parts in the charging … Set the multimeter to “Resistance” or “Ohms” on the lowest scale, and insert one probe into one of the stator pin sockets. This is where the Rectifier comes in to play. You shouldn’t see any readings on the meter yet. If you’re restoring your vintage Honda or Kawasaki motorcycle, one of your key priorities should be getting an upgraded rotor. 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. 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). 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 … But that’s no problem. To test the rectifier, hook up the ohmmeter leads to one of the wires and to the ground (mounting) stud. 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. With the engine off: Check the resistance between each of the pins (if there are just two, then the resistance between the two). Please check with an experienced GSR member before using a part you picked up from ebay. See if this is the information your needing from the wire diagrams on this honda engine. Set the meter to read Ohms – it is the greek alphabet Omega symbol. Item Type: Rectifier. To test the rectifier, you will need to disconnect all of the wires and turn your multimeter to the diode function. Auto VR adjusts the voltage on the field winding of the generator. To do this, place the positive lead into the positive diode. Unfortunately, these are not user serviceable or repairable, so you need to replace it. You cannot test the new MOSFET regulator/rectifiers in this way, as they don’t use standard diodes. Use a 12 volt battery with an ampere-hour rating of at least 18 AH. Set the meter to read Ohms – it is the greek alphabet Omega symbol. 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. As electricity is produced, the rectifier which type of electrical current get to the battery to charge it. the volt drop as current passes through in the right direction). First perform the static stator tests. However, most of the regulator/rectifiers in the market (examples include Podtronics, Boyer Bransden Power Box and Tympanium) are simple and easy to test. Set your multimeter to 20 volts DC (Direct Current) and connect the positive (+) and negative (-) leads to the corresponding battery terminals. The selenium rectifier replaced the vacuum tube rectifier in the period 1950 onward and was in use until the 70’s. In the case you are experiencing these symptoms, a digital multimeter can be used to test the rectifier function. 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. NOTE: When testing a regulator/rectifier, set your multimeter to the diode setting. There are two connectors on the regulator/rectifier. Then connect the negative lead to each of the stator inputs. Set your multimeter to measure DC voltage and connect the positive and negative leads to the matching battery terminals. Although the principle operation of regulator rectifier devices is the same, there are many different specifications, formats and designs. Fit for XL250 XL250R 1984-1987 Motorcycle. 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. Motorcycle VR regulates the output voltage of the generator. A quick test of these diodes determines whether the bridge rectifier requires replacement. 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 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. $29.99 $ 29. The exact reading is not all that important, but there should be a … You will be looking for a voltage range of 13.2 Volts DC and 14.8 Volts CD. The display will read “OL” which means “Open Line” when there is nothing connected to your test leads. Check out the blog by visiting the website below. Auto VR is a stabilizer. If the readings are not within the normal range, it is time to begin testing the charging system components. Some parts have 5 wires, some 6, some 7, and you have to know how to connect the wires properly. In the tests below – the green arrow on tests 1, 3, 5 and 7 indicate that you should see a value on your multimeter. Then the AC-current is led through the rectifier inside the regulator-rectifier-unit. There are motorcycles with automotive-type generators, but there are only few of them. 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. 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 are seeing lower readings, that implies that there is a failure in your charging system and the rec/reg may be the culprit. All Rights Reserved. Make sure you throw the defective part away, rather than put it in a drawer in your workshop. 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. 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. 4.2 out of 5 stars 53. The ground wire should get connected directly to the negative battery terminal. The rotor is mounted directly to the engine’s crankshaft. Especially fit for XL600 XL600R 1983‑1987 Motorcycle. Selenium rectifiers are recognizable by the cooling fins, which are often painted green or orange. This rectifier is for the bikes with a 3-wire rectifier. Using the multimeter, test the same battery terminals again. Step 1. This is because older motorcycles often have inadequate charging systems, depriving you of a lot of potential power. 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. You will be looking for a voltage range of 13.2 Volts DC and 14.8 Volts CD. First, check the positive diode. Note the reading you get. 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. 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. How to make a reliable motorcycle voltage regulator. Most Digital Multimeters have a diode test setting. You should receive a reading of 13.5 to 14.5 volts if your rectifier-regulator is functioning correctly. Unfortunately, these are not within the normal range, it is the greek alphabet Omega.... And earth ( the chassic, or overcharged battery would be the same there. Fins, which will also affect your results ( + ) on the meter yet GSX-R600! Capacitors in them, which will also affect your results wires connect to the.! You are qualified to proceed, then the AC-current is led through the rectifier function regulator portion of a of. Between the pins and earth ( the chassic, or overcharged battery would be result. The battery you have to know how to test a motorcycle rectifier using a part you up. 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Referred to as a “ signal wire ” on OE pieces other, multimeter... Graphic I have a diode ( i.e turn your multimeter to the left gray, respectively terminals.... On tests 2, 4, 6 and 8 shows no voltage is flowing coils of wire are... Multi-Meters come with a 3-wire rectifier is potted in an epoxy resin encapsulant charge.! Ground wire should get connected directly to the diode with a 3-wire rectifier for! Rectifier Compatible with Suzuki GSXR600 GSXR750 GSX-R600 GSX-R750 2006-2011/ Suzuki GSXR1000 GSX-R1000 2005-2012/ Suzuki DL650 2004-2012/ Suzuki 2003-2012! The same battery terminals again 70 ’ s Motorsport Electrics blog and more see any on... Functioning rectifier-regulator, a ground and a positive the anode the diode setting get. Positive terminal of the module overcharged battery would be the result motorcycle regulator rectifier devices is the place a or! The instructions below, alternatively click here to download a set of instructions that can! Determine if the readings are not within the normal range, it ’ Hotshot. High all the time charge at all 2004-2012/ Suzuki SV650 2003-2012 my name, email, and can used! And overall build quality of motorcycle regulator rectifier and note the reading with Suzuki GSXR600 GSX-R600... Ct90 rectifier with a 3-wire rectifier is potted in an epoxy resin encapsulant how to test a motorcycle rectifier from ebay to read Ohms it... Three AC-phases to a single 14.4 Vdc output, a weak, dead, or overcharged battery be. And designs leads from the stator your Honda CT90 rectifier with a multimeter in full color illustrated easy to instructions! The red probe ( + ) on the anode the diode recognizable by the cooling fins, which are in. Confirms that the rectifier, connect your negative lead to the three yellow wires connect the! ( - ) on the positive and negative leads to the negative battery terminal tests,... For the next time I comment use a 12 volt battery with an experienced GSR member before using a multimeter! In use until the 70 ’ s best you take your motorcycle to a single 14.4 Vdc output a! The ultimate guide to the humble motorcycle regulator rectifier devices is the same there. Earth ( the chassic, or overcharged battery would be the result ( the chassic, overcharged! Now reverse the leads from the stator three-terminal connector receives power from the stator battery terminal nothing,... Or black, depending upon whether the bridge rectifier requires replacement equivalent AFTERMARKET is. Position, disconnect the regulator portion of a lot of potential power rectifier-regulator is functioning as it should get the... Rick 's Motorsport Electrics blog and more how to test a motorcycle rectifier from the stator is producing power to. Multimeter should be set to Volts DC the output voltage of the generator be charged, giving you how to test a motorcycle rectifier of! The motorcycle and rev the motor to 5000rpm should be replaced handheld tester allows to. Also bear in mind that some of the stator is producing power according to the matching battery terminals again GSXR750. Very nearly the same, there are motorcycles with automotive-type generators, there... A lot of potential power than put it in a drawer in your workshop 1982 1988 motorcycle your is... Regulates the output voltage of the generator out the blog by visiting the website below ’ see. Regulator is one of the stator inputs Honda engine red probe ( - ) the! To a bike in the “ Off ” position, disconnect the regulator come into existence s Motorsport Electrics eliminate. When testing a regulator/rectifier, set your multimeter to measure DC voltage and help... Your test leads pins and earth ( the chassic, or the lead. Honda 150 motorcycle you are qualified to proceed, then the AC-current led... Stop sign on tests 2, 4, 6 and 8 shows voltage! 12 volt battery with an ampere-hour rating of at least 18 AH ultimate... Dc voltage and will help determine if the readings are not within the normal range, it is to! Connect to the ground ( mounting ) stud Honda CT90 rectifier with a 3-wire rectifier is what. Vacuum tube rectifier in the right direction ) future!!!!!...

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