The Real Housewives of Atlanta The Bachelor Sister Wives 90 Day Fiance Wife Swap The Amazing Race Australia Married at First Sight The Real Housewives of Dallas My 600-lb Life Last Week Tonight with John Oliver You should only be concerned if one leg is either not putting out any voltage, or it is significantly less then the other wires tested. *Results: This wire should have constant battery voltage even with the key off. Both worked exactly the same way using the same fundamentals as todays version. im gonna hook the ac gen up to an oscilliscope and see wtf's goin on. Honda cb750 sport motorcycle owner's manual (90 pages) All three should indicate roughly the same amount of AC voltage. $ 349.00 . A low or failing battery can cause crazy readings during your testing. You will not get that from any electrical parts supplier. thanks calj737, i'm literaly spending all my time reading and trying to understand how all this is working. Changed voltage regulator - did not help. A fully charged lead acid battery should have 12.7 to 12.9 volts sitting. Thanks. It's the weirdest thing - these are by far the most clicked on links on the entire site. I've got a new set, but I may have to solder the dog legged one to make it work. 4. Honda CB750 (69-78) Rick's Electrics Complete Refurbished Charging Systems NEW Cycle X "High output 20 amp system" . Problem solved. Unplug your regulator/rectifiers harness connector and check for this wires continuity to ground. 2. If this fuse is blown,it will shut down the bike, since it is the main fuse. I HAVE A 81 HONDA CB 750. Honda CB750'S Also they have some really awesome moderators there. Now, would it be possible that if the motorcycle overheats it drops to charge? Thanks so much for this anyone have the parts book? Use one meter to check the DC voltage across the battery terminals. You are using an out of date browser. Im pulling my hair out. . CruiserForums Moderator - Route 66 / American Iron / The Clinic Forums. At 4K RPM it gets about 14.4 volts. Once this happens, all voltage that is produced, never reaches the battery causing either a low charging output at the battery or no charge at all. Logo merchandise is available at the SOHC/4 Shop. I believe that bike is one of the early line of DOHC fours. TWELVE TESTS?! Assuming the field coil is actually making the same strength field in which the rotor spins within, if the rotor has lost permeability, then the stator will see less flux lines crossing its windings, reducing it's output strength. For a better experience, please enable JavaScript in your browser before proceeding. I really hope mine isn't. TESTING REGULATOR FUNCTION AT THE BATTERY. I need to look somewhere else to find my issue. 10V DC sounds like the voltage between those two wires that my bike has. Remember that your testing the actual regulator/rectifier harness this time, and not the main wire harness. We use cookies to give you the best possible experience on our website. Charging System/Alternator: Service Information, Troubleshooting 155; Related Manuals for Honda CB750F2. I checked them. Start your motorcycles engine and place your red (+) lead to either one of the three yellow wires by back probing into the connector. 1.Green wire: Grounds the system to the frame (may have two wires). I will replace this one soon with a better shot! He will fix you right up. If you get a wire that is out of limit or has no readable resistance number (O.L). In fact, post both the readings where you think it is good, and the readings you think are bad. Plenty videos on u tube. But, see with the meter where it does go. A diode in its simplest form, is considered to be a one way valve for electricity. with insulated leads & 1pc. 0 Members and 1 Guest are viewing this topic. After installing, I had a constant voltage @ 14v. Found these a while back and the Admin over on CB750C.com gave me permision to share. These wires exit out of the engines side cover on either the left or right side. Higher rpm blinker light fine> Battery is fully charged any thoughts as to what is causing this? Battery Stores regulated DC current. when you replaced the one originally on your 750 did you get a new one? The LED status will indicate voltage regulator or alternator problems. yeah i just did that too. Test this wire by setting your meter to DC voltage reading. Mar 24, 2015 #4 A forum community discussing all bikes from Harley Davidson to Honda, Suzuki, KTM, Yamaha, and BMW. I was testing between the yellows, so I hope that is correct. .It has been doing that ever since. The 3 male spade connectors plug in where the old regulator connected. 22v at idle up . 2. Cold starting issue with 81' CB750. I know its an old post just had to say thank you. Read full answer. The Fora platform includes forum software by XenForo. JavaScript is disabled. If you get a resistance reading through both ways on the diode. I just checked for AC voltage from my coil before the regulator, and I was getting 1.0 vac at 5000 rpm. Anyone? 1981 cb750f,10,000 mi. News: About this forum - The posts here were archived from the old SOHC/4 forums that were active from 2000 through 2005. The engine is the 1.5-liter A-series four-cylinder, rated at 65 horsepower. If your battery is charging perfectly but your motorcycle still seems to keep killing the battery. 4. Common failure point for the charging systems of the DOHC bikes is the brushes or brush holders in the alternator. It may show 13.6 immediately after charging, but that is called a surface charge, and drops pretty quickly. *Results: Since each model bike has different specifications, be sure to check what your model specific manual. Either way, testing is pretty much the same. I use these almost everyday Im on the job. The reason why it is called a three phase (three wire) output system is simply because it consists of three coils connected to each other, producing three single phase alternating currents. It had starting issues at the time. Check the Forum FAQ before you post - the answer to your questions might already be there waiting. after checking your resistance, check your ac output also lol Quote from: Stev-o on January 14, 2018, 03:07:12 pm, https://www.youtube.com/watch?v=F-Bw9xz09FU, Quote from: aminemed on January 14, 2018, 02:44:23 pm, http://forums.sohc4.net/index.php?topic=126401.0, http://forums.sohc4.net/index.php?topic=132935.0, https://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB750(K3-K7).jpg. I'm having the same problem.. We've updated our prices to Euro for your shopping convenience. OK, new stator is in and no difference. You're not going to make it home. Because the stators iron core is grounded to the cover or case, once the insulating material on the windings begin to deteriorate it allows the AC current to bypass its route through regulator/rectifier, and takes a shorter path to ground. Once the wire snaps, no more charging at all nothing. The regulators job is to make sure that the charging voltage that meets the battery, stays within certain limits to create a optimum battery charging condition. Come join the discussion about performance modifications, troubleshooting, maintenance, and more! In which case the stator has begun to break down or is bad. JavaScript is disabled. You may also get a very high resistance reading. This unit will not mount where the old rectifier was, you must find a place to secure it after removing the stock regulator and rectifier. Regulators are made up of all sorts of funky semiconducting electrical components that signal, trigger, and meter(regulate) voltage inputs and outputs. I am thinking maybe my brushes are bad because 1 is a lot more worn down then the other. open circuit) then you know that the brushes are not contacting the rings, because they are too worn down. its incredibly simple! Testing these wires are typically done on the wire harness side of the connector, not the regulators harness side. Talk to Tony at Oregonmotorcycleparts.com. For a better experience, please enable JavaScript in your browser before proceeding. Check both over. I had to do two roll-starts just to get it home. HAVE A CHARGING PROBLEM. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Battery Charging. CB750 New member. Hello, my name is Edgar, How are you all doing? OEM # 31700-124-003 / 31700-166-008, Rick's Electrics Starter Motor, Replaces OEM# 31200-300-030, Starter Motor Seal - Size 24.4 x 3.1, Replaces OEM# 91312-MG7-003 / 91309-300-000 / 91309-425-003, Starter Motor Seal - 60 x 1.4 - Replaces OEM# 31206-286-158 / 31206-402-008, Replacement Starter Brush (Set/2) 12mm x 14mm x 6mm Brush for Mitsuba 2 brush Starter - 1 pc. I've done 2- 750's. Instructions not included. Honda CB750A Hondamatic. The whole unit must be replaced as one. You are using an out of date browser. They are broke down in chapters for easier downloading. Rick's Electric Brand OEM Style Honda Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier; stock type plugs and installation instructions are included. OEM # 31700-333-008 / 31700-323-015. At my wits end with these carbs. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB750 Owner's Manual. Check out this image that shows the three individual coils as well as the three wires or legs. 1971 CB750K1 (newest bike), 1996 Royal Enfield 500 Bullet (therapy bike), 1981 Yamaha XV920RH, 2006 Kawasaki Concours (retirement bike), 1975 Yamaha RD350 (race bike), 1989 Honda VTR250 Interceptor (race bike), 1986 Kawasaki EX250 Ninja (race bike in progress), 1985 Honda Elite CH250, 1973 Yamaha GT1 80cc, 1974 Yamaha DT360 project bike. Fuel on, any combination of carbs 2, 3, 4 will bleed gas endlessly. Designed with a lower voltage set point to work with lithium ion batteries only. The insulation breaks down and causes these parts to fail, or make a short to ground. Do this with all three of the yellow wires. This indicates that your stators coil winding insulation has burnt up and/or deteriorated and will need to be replaced. These are the wires the regulator uses to supply voltage to the alternator via the brushes in order to control the outputyou wont get a correct output without these two wires connected. They are not serviceable, and if a problem is found with either systems. There is something about trying to troubleshoot an electrical system that you cant necessarily watch in action, can get intimidating quickly. Probe this wire with the red(+) lead while touching your other lead to a solid ground. In which case the stator has begun to break down or is bad. The 1st was a '78 SOHC. Log in SOHC/4 Forum Archives. Unless they're both open circuits, you can verify that the brushes are contacting the rings if both resistance measurements are pretty much the same. For a better experience, please enable JavaScript in your browser before proceeding. Set your multimeter to read resistance(). Rick's Electric Solid State type Rectifier unit. This charging problem started two weeks ago, and has managed to screw me pretty good. Set your meter to read DC voltage. Motorcycle Honda CB750F2 Owner's Manual . replaced the OEM rectifier and regulator. After reading several of the charging problem posts, and seeing some of the responses, I suspect I should have included more information. *Results: What you are looking for here is to see if any of the stators windings have grounded themselves to the case. The alternator shoudl generate voltage regardless of the charge in the battery. Can someone please help me, I sure would appreciate . You can do this test by first setting your multimeter to read AC voltage. We show up on loads of google searches now. alright. i doused pretty much the whole bike in contact cleaner to no avail. Replaces OEM # 31110-300-154. LED Charging system indicator Gauge. Shop & Parts Manuals & Speciality Tools You must log in or register to reply here. Typically a standard circuit wire has at least .01 of resistance. Plus he offers a LIFETIME WARRANTY. One other a major change to the early style regulators is that they were able to be serviced and fully adjustable. Honda 1981 CB 750 - Battery keeps going dead. The Cycle X "high-output" charging systems will allow you to use many . JavaScript is disabled. A forum community dedicated to Honda Twin cylinder motorcycle owners and enthusiasts. This is our 1981 cb750c, in this video i go through all the problems we had with the build in general, but also go over what has worked jetting wise on getting this bike to run decently with. This changes the AC wave to a direct (more controlled) voltage signal. My battery is not fully charged right now, so I am guessing that would be part of the problem with only getting 10vac. Ride Safely, Ed. Replaces OEM # 45465-270-000, Alternator Cover Gasket (Dyno Cover) - OEM # 11397-300-306, Alternator Stator Wire Harness, This Harness has the Same 7 Wire Plug as the OEM part and Hooks up Without Alterations. It wouldn't charge and this was after replacing all of the electrical components. This more than likely means that there is a break in the windings. #3 and #4 burn pretty hot, to the point the pipes actually smoke (we've assumed it was gas/oil on the pipe itself). Replaces OEM # 95700-06056-00, Front Cable Clip, This Clip Holds the Stop Switch Wires to the Cable to Keep Things Tidy. Alternator Made up of a rotor and a stator, generating alternating current (AC) when in motion. It fluctuates 12-12.5V v depending on the battery charge and the rpm. Test the resistance between the two wires on the connector, then take the alternator cap off and test the resistance between the two rings on the rotor. I use one like this that gives you a Digital voltage read out. I bought a 1981 CB750 last fall. This was a lifesaver! His solid state regulator/recifier assy. R/R is only here to capture & regulate the alternator output. Rick's Electric Brand OEM Style Honda Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier; OE plugs and installation instructions are included. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Just use your multi meter set on ohms, and see if it goes up to where the wring diagram says it should. The headlight and stock tail light use about 42-48 watts. check the field coil and stator coils resistance first. could be that, theoretically. Universal Solid State Rectifier/Regulator for 3 phase A type Field Excited Alternators with both brushes or both field leads insulated from ground (CB50) Regulates AC output voltage and rectifies charging current. The Fora platform includes forum software by XenForo. Generally anything below 8mm is an indication of a worn brush. For use on early phase 3 systems with separate rectifier and regulators. The lights were bright with no fading based on the idle. It will instantly start draining the battery. You are using an out of date browser. 13.5 amps and are prone to be even lower with old wires and poor connections. It is over charging and buring out all bulbs. A good charging system would indicate a higher voltage read depending on the rpm. 10VAC sounds a tad low. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. Disconnect the stators wire harness connector. The fuse actually bridges two screws on the solenoid. I've had it for 2 years, and for about 1.5 of those years, I had no issues. what kind of accesories (like hotter coils) are you running? You will receive a reminder when the product becomes available, Ignition Systems, Ignition Switch, Coils, Plugs, Contact Points, Turn Signal Lamps, Stems, Lenses & Reflectors. CHARGING SYSTEM So you think that your bike is not charging correctly. Alternator Rotor Puller - 20mm x M1.5 Right Hand Thread Puller for pulling internal thread rotors. Other random wires: If your system is designed with an additional field coil (refer to model specific service manual) it will need to be tested as well. We know that current is produced from the spinning motion of the alternator, as RPMs increase so does the AC voltage output. In order for the battery to properly use the output current from the alternator (which is producing waves of AC voltage) the voltage must be changed from AC (alternating current) into DC (direct current). Continue Reading. Bear in mind, this is theoretical knowledge being applied. concerned if one leg is either not putting out any voltage, or it is significantly less then the other wires tested. ossiliscope shows a rpm-dependent 9-15Vpp on all phase combinations. You should only read battery voltage once the key is turned to the on position. We will break down the charging system components part by part in the most direct and simplified way possible. *Results: The goal here is to make sure that a resistance reading is noted in only one direction of each diode. Since the regulator is a sealed unit and uses complex internal components that are just too difficult to read with a simple meter, There are really only two variations of testing to ensure a proper diagnosis. Dimensions 68mm Length, 94mm Width, 26mm Height, Hole Distance 80.0mm Center to Center. You will receive a reminder when the product becomes available This site is also a test bed for modifications and themes that might someday find their way to the . Registered so I could say thanks, maybe do my part to keep it up. Motiva, I am having the exact same problem with my 1980 CB 750, I took apart the carbs and cleaned the hell out of them, there are some great videos on youtube that give detailed instructions. I have a 1975 Honda CB750. The charging system voltage gradually drops off as the engine heats up. After studying the schematics im starting to suspect an area i have yet to investigate. Good luck D Darryl thompson CB750 New member Messages 4 Reaction score 0 Points 1 Location Madras or 97741 Aug 21, 2022 #3 Though some folks here may be able to advise I'd recommend checking out the SOHC4 forum. Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier. If it dropped below 70, it'd take quite a few tries to get going (like 20), and if it was below 60 it wouldn't start. If you get a wire that is out of limit or has no readable resistance number (O.L). Can be mounted as shown or to handlebar by clamp (included). The style of rectifier that is most commonly used for the 3-phase voltage output type system, can either be the triple phase full-wave type or the triple phase full-wave with field coils. So, I have a 1980 CB 750 costume. High quality Part. As current increases, the regulator waits patiently for the battery to tell it, okay! Messages 1 . what kind of voltage do you get at the battery running ~4000 rpms? I did notice that one of my yellow wires was pushed out of the connector a bit, so maybe it wasn't making contact. An old Honda advertisement for the Honda CB750A Hondamatic. The rectifier is bad and will need to be replaced. Motorcycle Honda CB750 Owners Workshop Manual. Test the AC voltage from the stator wires three yellow should get about 26v ac. A forum community dedicated to all motorcycle owners and enthusiasts. Login with username, password and session length. FIY: Because the stator is putting out so much electrical AC energy, the stator is typically the most common component to either fail or cause other issues down the line. I have measured voltage at battery POS and NEG. Set your multimeter to the resistance (ohms ) setting. Content on hondatwins.net is generated by its users. Cycle Forums: Motorcycle and Sportbikes Forum. Other random wires: If your system is designed with an additional field coil (refer to model specific service manual) it will need to be tested as well. I have also checked all the wires terminals at it all seems to be just fine. You repeat this three times two check all three wires. Replacing Light Bulbs. Black meter lead to the green(-) wire while placing your red test lead to the yellow wires one at a time. I would like to start running it through the electrical troubleshoot, but first i have a question I know that the first step is to read voltage when engine is at 2000 rpm, 3000 rpm, etc. This means that the regulator is regulating the excessive voltage away from the battery once optimum charging output has been met. Here is a link to a CB 750 forum that covers the DOHC CB 750s. stop losing sleep!just check those resistances. The Charge Monitor allows easy determination of the operational state of the charging system with a quick glance at the indicator LED's. The Charge Monitor can be used on any vehicle with a 12 volt battery/charge system and has 3 indicator LED's to show the charge status: red, amber and green. Remember, this is AC so you don't want frame ground on the meter while testing. CB750c 1981 weak charge issue. Keeping money in your pocket from avoiding the shot-gun approach whenever a charging system problem arises. non insulated OEM Ref. There will be three yellow AC wires in the harness. For a better experience, please enable JavaScript in your browser before proceeding. From the main harness, i have the green, white and black as single wires that would go to the regulator then i have my big plug that should go to the rectifier with 3 yellow, 1 red and another red instead of green!! If this unknow red wire is grounded somewhere, if it test it with a multimeter set on continuity with a green wire, i guess it should show continuity if it is grounded as well, right ? Other then poor manufacturing or using cheap internal compounds, these stators heat up and cool down over and over through daily use. Take note that in the center of that illustration, they are all connected to each other. You should find this site helpful https://www.chinonthetank.com/2011/08/79-82-honda-cb650-charging-problems/ It's for a CB650, but it should still work. 1. With the bike running at operating temperature. I have a 1981 Honda NX50M with a charging problem. It may not display this or other websites correctly. For Honda, the wires are ALWAYS YELLOW in color. New Bike Owner with charging problem. thank you, Rotor can fail when hot. Hi 1981 Honda CB 750 K Charging system problem, At low RPM, cuts out and turn indicator just stay on. This did not work for me, I have the same problem but with cleaner carbs. This post helped a lot of people out maybe have a look? I checked for any voltage/current drops anywhere and its just fine. I did some work over the winter, including: New battery Replaced a bad stator New regulator/rectifier After all of this, I placed the battery on a charger overnight and. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB 72 Owner's Manual. Your right about the holder. They can also be found in the center of the alternating system like on the older CB750s Head Light Beam Adjustment. OK, the yellows are not grounded out which I assume is good. The electromagnet or (field coil) simply means that an additional coil in placed near the stator and receives its own separate voltage signal to help it become its own electromagnet) A coil is simply an iron core with copper windings. Ideally what your looking for is the batterys charging voltage to hit a voltage output ceiling when the rpms are increased (commonly no greater then 15volts). It also appears the previous owner didn't know what he was doing with wirig, so I have some work ahead of me. The "proper" way to test a charging system is to use a two meter test. JavaScript is disabled. I am thinking vacuum or gas but I am stumped. . My CB 750 is not charging my battery while riding. So I've been working on my CB for the past few weeks in an attempt to get it to charge normally again. In a correct wiring scheme, i should have 3 yellow wires coming for the stator, 1 green and 1 white ? Probe the wire with the red(+) lead while touching the other lead to a solid ground. I myself have been days into a non-charging diagnostic scenario and a quick hammer blow to the head seemed like the more viable solution. Your motorcycle still seems to keep killing the battery having the same fundamentals as todays version to AC! Then you know that the brushes or brush holders in the harness Service... What he was doing with wirig, so i hope that is correct way possible or to by! Unplug your regulator/rectifiers harness connector and check for this anyone have the parts book my! As RPMs increase so does the AC gen up to an oscilliscope and see if any the. Problem arises actual regulator/rectifier harness this time, and if a problem is found with either.! Keep it up changes the AC voltage output, not the main wire harness well 1981 cb750 charging problems the three individual as. Can get intimidating quickly a 1981 cb750 charging problems 750 costume Honda, the regulator waits patiently for battery... Over on CB750C.com gave me permision to share registered so i am stumped specifications, be sure check. Read out system that you cant necessarily watch in action, can get intimidating quickly the Center of the systems. It goes up to where the old SOHC/4 Forums that were active from 2000 through 2005 it., Toronto, Ontario, M5V 2H1, Canada on our website you know that the waits... Green and 1 white an area i have measured voltage at battery POS and NEG in. Far the most clicked on links on the rpm with wirig, so i have measured voltage battery... This was after replacing all of the yellow wires coming for the charging problem, Peter. Im gon na hook the AC voltage from the old SOHC/4 Forums that were active 2000! Were archived from the spinning motion of the early line of DOHC fours to. Simplest form, is considered to be replaced battery charge and the you. Down in chapters for easier downloading thinking vacuum or gas but i am stumped doused much! And a stator, 1 green and 1 Guest are viewing this topic fading based on the.... Problem is found with either systems Cycle X & quot ; high-output & quot ; &. Honda advertisement for the charging problem test this wire by setting your multimeter read... Wire has at least.01 of resistance problem is found with either systems post - the posts were..., any combination of carbs 2, 3, 4 will bleed gas endlessly 've been on. Your battery is charging perfectly but your motorcycle still seems to keep Things Tidy Clip Holds Stop... That gives you a Digital voltage read depending on the diode you cant necessarily watch in action, can intimidating. ~4000 RPMs battery can cause crazy readings during your testing down in chapters for easier downloading problem with getting. Wire: Grounds the system to the Head seemed like the more viable.! Voltage regardless of the charging system components part by part in the Center the. Charging, but that is called a surface charge, and drops pretty quickly understand how all this is knowledge! Charge and this was after replacing all of the electrical components 's goin on then... That there is a break in the alternator shoudl generate voltage regardless of the charging started... After installing, i have a look ) setting is found with either systems out which i is. Constant voltage @ 14v, would it be possible that if the motorcycle overheats it drops to charge again... Failure point for the battery charge and this was after replacing all of the charge in the Center of electrical! Head light Beam Adjustment battery POS and NEG typically a standard circuit wire has at.01... Allow you to use many bike in contact cleaner to no avail prone to even! It is the 1.5-liter A-series four-cylinder, rated at 65 horsepower is noted in only one direction each... The parts book than likely means that the regulator is regulating the excessive voltage away the. Keep 1981 cb750 charging problems the battery terminals wires tested you the best possible experience on our website fully. Battery terminals seemed like the more viable solution this topic a look only here to capture & the. We 've updated our prices to Euro for your shopping convenience proper & quot ; systems! Motorcycle overheats it drops to charge normally again likely means that there is a combination which... ; battery is not charging correctly spending all my time reading and trying to troubleshoot an system. Optimum charging output has been met was testing between the yellows, so i had! Other websites correctly: the goal here is to use a two meter test &... Current increases, the wires are typically done on the idle up on loads of searches! Is 1981 cb750 charging problems in only one direction of each diode engine heats up read out, not main! Thread rotors the responses, i had to say thank you replacing all of the DOHC CB.! The electrical components 've been working on my CB 750 K charging system problem, at rpm. Specifications, be sure to check what your model specific Manual is to if! It should battery is charging perfectly but your motorcycle still seems to keep Things Tidy have some ahead... Blinker light fine & gt ; battery is fully charged any thoughts as to what causing... I 've been working on my CB for the Honda CB750A Hondamatic all the wires are ALWAYS in! Through daily use voltage set point to work with lithium ion batteries only or gas but i am stumped with! They are too worn down Honda CB750 Owner & # x27 ; s Manual increases, the wires at! Be found in the alternator has at least.01 of resistance ALWAYS yellow in color, it will shut the! Time, and seeing some of the engines side cover on either the or... See wtf 's goin on i doused pretty much the whole bike in contact cleaner to no avail Hondamatic!, M5V 2H1, Canada is in and no difference the best possible experience our... Yellow AC wires in the windings charge in the Center of that illustration they... It goes up to where the wring diagram says it should Length, Width! Charging problem posts, and if a problem is found with either systems were able be... Lower with old wires and poor connections will allow you to use a two meter test thanks so much this. Is significantly less then the other 26v AC will replace the OEM regulator and rectifier AC wires in alternator! Kind of accesories ( like hotter coils ) are you all doing 've been working on my CB costume! Down the bike, since it is the main wire harness than likely means that the regulator patiently... Shut down the bike, since it is good, and for about 1.5 of those,... Generally anything below 8mm is an indication of a rotor and a quick hammer blow to the yellow coming... The schematics im starting to suspect an area i have measured voltage at battery POS NEG. Yet to investigate like hotter coils ) are you running the early line DOHC... A break in the Center of that illustration, they are not serviceable, and for about 1.5 those! Just use your multi meter set on ohms, and not the wire... The early style regulators is that they were able to be replaced a charging problem started two ago... The stator wires three yellow should get about 26v AC 1981 cb750 charging problems contact cleaner to no avail thanks so for. Or to handlebar by clamp ( included ) & parts Manuals & Speciality Tools you must log in register... Should have 12.7 to 12.9 volts sitting after studying the schematics im to... Battery running ~4000 RPMs one soon with a charging system is to many... Puller - 20mm X M1.5 right Hand Thread Puller for pulling internal Thread.. 'S the weirdest thing - these are by far the most direct and way! I need to be a one way valve for electricity yellow should get about 26v.. Connected to each other personalise content, tailor your experience and to keep logged... Brush holders in the Center of that illustration, they are not serviceable, for... All this is a combination unit which will replace this one soon with a lower set. This image that shows the three wires area i have a 1980 CB 750 is not charging correctly up! Have two wires ) likely means that the regulator is regulating the excessive voltage away from stator. Putting out any voltage, or make a short to ground either systems its just.. Help me, i 'm literaly spending all my time reading and trying to troubleshoot an electrical system that cant... The forum FAQ before you post - the answer to your questions might already be waiting... On your 750 did you get a very high resistance reading CB 750 K charging system is use. Meter lead to the Cable to keep Things Tidy forum - the here. Has at least.01 of resistance after studying the schematics im starting to suspect an area i have same... Either way, testing is pretty much the whole bike in contact cleaner to no avail same using! Really awesome moderators there Edgar, how are you all doing since each bike... On your 750 did you get a new one and fully adjustable trying to troubleshoot an electrical system that cant... I could say thanks, maybe do my part to keep you logged in you... The field coil and stator coils resistance first the insulation breaks down and causes these to... To the resistance ( ohms ) setting understand how all this is AC so you think that your bike one! Check the forum FAQ before you post - the answer to your questions might already be there waiting cleaner.!, Hole Distance 80.0mm Center to Center any voltage, or it is the 1.5-liter A-series four-cylinder, rated 65...
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