how to test a motorcycle rectifier

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 Your email address will not be published.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POD-tronics, podtronics, power box, powerbox, rectifier, rotor, stator, tympanium, voltage, Your email address will not be published.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

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