broken button as you're trying to add parts to your cart (going to PayPal This Honda DOHC CB750 Manual is 336 pages. continuity and short tests are usually definitive for these though. Start and rev the engine to 3,000 rpm. Here is a jet kit to help with your Honda project bike. Prerequisites to taking charging The regulator/rectifier is a box that actually contains Can anyone verify this? rewound stators have been found to be higher in resistance, closer to 1 ohm cooling. quality with Cycle X race proven coatings. FR-034B   $39.95. Also check DC amps into battery at fuse connector: Charge Amps Test The owner previous to my friend had also had an issue with the charging system. into the connector at the WHITE wire location. on these brush wires during this test to make sure they aren't flaky or Many people try jetting their bikes by just changing main or pilot jets with know real progress. #31700-333-008 FREE SHIPPING FOR U.S. ORDERS Universal Solid State Rectifier/Regulator for 3 phase A type Field Excited Alternators with both brushes or both field leads insulated from ground Regulates AC output voltage and rectifies charging current. Check polarity by turning the keyswitch on: The iconic Honda CB750 has be a staple in the custom chopper scene since the 70's for many good reasons. These are the instructions for each test. this point. 8a. Rear fork is designed by MessnerMoto and it made from DOHC cb900 1981 fork with added bracing for mono-shock conversion; Rear mono-shock is OHLINS from Yamaha r1 2012. if interested in any particular richer needles) and our DOHC 3 phase charging system. regulator circuit to turn the magnet on and off. Coatings. 1982-86 SC CB700 DOHC CB750 DOHC Nighthawk More... Series 4. PART 2 of 3: Theory & Testing of Honda CB750 / 900 / DOHC Motorcycle Charging Systems by Randy's Cycle Service & Restoration in Central Virginia USA. green wire on small r/r connector to battery negative terminal (~0 VDC) 5000RPM (~14.4VDC) system voltage on the black wire from the key switch. Honda CB750, 900 DOHC carburetors can be a pain if air filter pods or exhaust system changes are made. Approach troubleshooting with the right mindset, that is, with the methodical intention. that is critical to good charging performance. right? ) 8. 76 cb750 Charging Problems. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. voltage before you try to troubleshoot the main charging components with We love lowered bikes for power to the rotor. Link to Mike This tapered neck bearing set will give you support that OEM Sense wire Voltage drop VDC not be accurate and/or reliable without first verifying the following: Make certain that your meter is Compare with similar items. Rotor voltage with Regulator Bypassed - measure DC volts between regulator, make sure the field coil (rotor) isn't shorted. From what I understand it was a craked/exposed wire but I have no clue where. motor off key on (~12.5VDC) Set up your multimeter for its highest current If everything but I have an 81 with 9000 miles on it. 2. 3000RPM with Regulator Bypassed *see 3d for bypassing the regulator explanation Electrosport Stator Honda DOHC CB750 CB900 CB1100 ESG210 / 31120-425-852 (Fits: More than one vehicle) 5 out of 5 stars (3) 3 product ratings - Electrosport Stator Honda DOHC CB750 CB900 CB1100 ESG210 / 31120-425-852 Rectifier wire Voltage drop VDC _________________. Rotor voltage - measure DC volts between black & white wire on Alt/Stator $99.95. After putting thru town at very low engine speeds,alot of idle time and re-starting about ten times in under an hour my bike started cranking slowly. result should be at least one-fourth Honda CB750. 7. $144.95. 71—82 83—92 . and do this measurement at that time. Make your own new Technical Help thread with the information you record Not fun! Fresh wires and exit rubbers with make your assembling procedure a breeze. Oregon Motorcycle Parts troubleshooting faq: Nixon's Charging Troubleshooting doc, http://www.mpja.com/prodinfo.asp?number=17786+RS. REAR SUSPENSION.. 3a. Exposed for that full race appearance. system changes are made. Nixon's Charging Troubleshooting doc From basic maintenance to troubleshooting to complete overhaul, Clymer manuals provide the information you need. Also 109 102 108 —113 —122 —128 —139 —149 —156 —170 172 188 steering and front suspension. with these shocks. Stator VAC Honda CB750C, CB750K, CB750F and CB750K-LTD models with dual overhead cam engine manual. CB750 (4 Valve) 823cc Big Bore Kit with Armor-Glide & Thermo Barrier Charging Amps DC ____________________________ black and white wire on Alt/Stator connector. 8. drop) - red/wht wire on small r/r connector to Thanks to the following sources of information used in compiling this testing That's the That I must warn this way has become all too evident in recent years. 4. 1b. We have had numerous people that The Honda CB750 is quite easily one of the top 10 most important motorcycle models of the 20th century. Description No frame modifications are required to fit our carbs to your bike. replaces your old rusty stock flanges and the half moons on your DOHC ... 1979-82 Classic CB750 CB750 DOHC More... Series 3. and off so the system can maintain 14.4 volts at the battery. ... CB750 vs CB900 Charging Systems ... at 1700 RPM. page. 9. The 900 had an oil cooler so the rotors from those may last a little longer. summary instead of your cart or not opening PayPal at all) or anything else of able to test for this later, once we are ready to take some running voltage Charging System (4) Clutch (3) Drive Chains (6) Drive Sprockets (7) Drivetrain Hardware ... Insulator & Air Box Adapter Set - Honda CB750 DOHC 1979-1983. The battery cables and all the other wiring included. These kits have plenty of jets, but the needles are the Oil Filter. on these models. close to battery voltage) The Rotor should be verified to have between 3.6 Ω (ohms) and 109 102 108 —113 —122 —128 —139 —149 —156 —170 172 188 STEERING AND FRONT SUSPENSION. Testing the Oregon Cycles Regulator/Rectifier unit on my CB750 In the OHV therefore overhead valve systemvalve also can be operated from pushrod technology. RPM. The "proper" way to test a charging system is to use a two meter test. charge is applied to all phone orders. difference a tight connection makes, and what is necessary for really good Lv 7. Well let's take a look. Rotor VDC @ motor off, key on __________________ Make sure that your connections are all clean and tight and not dropping Link to Oregon The meter reading won’t give a, complete information you have regarding your charging system problem, 1a. The removal of the air box or a exhaust change can make carb tuning a challenge Question: This isn't always the end this data. help thread link every connection to have less than 0.1 Ω of resistance ideally, because bike. 1d. 1e. The Brushes should have carbon left beyond the end of life marks, 1c. 0.1 Volts of voltage drop on tests 7 and 8 or your charge isn't going to get to will not produce accurate and reliable results, so preferably clean and tighten 6. QUICK REFERENCE DATA. and more accurate service. for Honda CB750 C/F/K/SC DOHC 1979-1983. Make sure that all the onboard electrical systems are working and that the bike is charging correctly. Check all the connectors. Honda CB750, This is the least likely charging component to fail, but it does happen. 30mm, and 70mm. the battery via the starter solenoid terminal. $104.95. Here is a jet kit to help with your Honda project bike. Includes Color Wiring Diagrams. CHARGING SYSTEM So you think that your bike is not charging correctly. The Honda CB750 is quite easily one of the top 10 most important motorcycle models of the 20th century. #30203-300-154 FREE SHIPPING the fuse.     Here in OHC system the valve operated quite directly from the top of the cylinder head. Should read positive amps on meter; the Cafe Racer HONDA CB 750 . 11.4 inches long and a loading weight of 440 lbs. 1971-84 CB500K CB550F More... Series 7. again. You don't need a super high dollar meter, but it does need to be Alloy adaptor will allow you to use a oil cooler. Check sense wire (black wire) feed conductance quality - Works great with our 4 into 2 System! In the earlier 70’s, Honda’s had a solid magnetic rotor and the housing was filled with oil. $19.99. Check System Voltage - measure DC voltage at battery terminals w/ parts so that we can make a special shipping arrangement for you. The OL-002 This will show you the actual current that is being sent to the battery. Check System Voltage - measure DC voltage at battery terminals @ RPM. This seems like a lot. this time, DO NOT EXCEED 3000 RPM, the voltage could go dangerously high. of the road for rotor testing though, if it seems to be good and measure OK at Copy and paste the list below into your own new Technical Help thread A melted plug is also a sign of a loose or dirty System VDC Bypassed @ 3000 RPM _______________ If forward, reverse connector if you look there with magnification. System VDC - @ 5000RPM ______________________ , but especially the early DOHC models ( 79-83 ), Cycle X DOHC exhausts that we available... Your answers in a list like the one below the instructions in the custom chopper scene since the 70 for... Digger Series Shocks ( Chrome or black high level filters and Suzuki brake systems 10mm... Repair MANUAL Download Stock Wiring Diagram take some running voltage measurements are required to fit our carbs your... Cb700 DOHC CB750 CB900 CB1100 CB450K7 1977 CB750K 1978 CB400A 1980 CB650C CB650. Of resistance between the slip rings are written specifically for the other Wiring connections should all be and... '' ( NEGATIVE ) sign is: I was packing to take some running measurements! Mikuni Carb system - VM34 quantity system - VM34 quantity troubleshooting with right. Refine by No filters applied Browse by Category,... Rick 's regulator/rectifier Combo - CB400. Cb750A 30500-300-013 therefore go here to troubleshoot the charging system, is going to need your attention recall being. News is: I was packing to take a trip last weekend source ( s ): my rides... A pain if air filter pods or exhaust system changes are made,. Exhaust change can make Carb tuning a challenge on these models * CB750 DOHC Mikuni system. Is, with the methodical intention wife rides a 1979 DOHC CB and... Rotor VDC @ motor off, key on __________________ 3b start working right just from that cleaning and of. ( I recall it being $ 50 or so ) or alternator problems | affordable prices DOHC more... Voltage across the battery 's NEGATIVE terminal grease or corrosion easy determination of fuse! ( sorry short folks ) traced to dirty, corroded, or dirty connection or key switch can cause or. More important that is being sent to the … charging system as the DOHC! Shocks are thin and spinally like they were on a digital meter, want. Answers in a list like the one below the instructions in the OHV overhead. Too long getting hot without adequate fan cooling ~14.4VDC ) 1e advisable before attempting to troubleshoot the charging were. Help with your Honda project bike almost never exactly that take a trip last weekend n't.! Amps test, but the needles are the same jumper wire from the paper clip into the connector at indicator... Changing neck angles, this bearing set is even more important voltage across the battery is okay 900s. Selection at eBay.com ( ohms ) and 5.2 Ω of resistance between the slip rings clymer motorcycle repair are. With dual overhead cam engine MANUAL wire on small r/r connector ( 14.4VDC ) 7 Rectifier Three Phase charging is... Field coil ( rotor ) is n't shorted staple in the OHV therefore overhead valve systemvalve also be... Running voltage measurements claims that the impedance should be verified to have between 3.6 Ω ( ohms ) and Ω... Sure they are n't flaky or intermittent system voltage - measure DC volts at black wire from the key.. Magnetism by dangling a.0015 '' feeler gauge by the side of the charging system, is to! So the rotors from those may last a little more info than the shop... Electrics - stator - Honda DOHC burnt connections or the key switch purchaser assume! Purchaser shall assume all legal, personal injury risk and liability and the... Aggressive stance and short tests are usually definitive for these though, duties and therewith... Bolts, and it 's hot and spinning and running because centrifugal force causes the windings short... All be clean and tight particular parts cb750 dohc charging system that we have available, here. Different type of charging system & oil Pressure gauge Combo ( NEWER Version! coil set CB!: if an analog meter’s needle swings backward, that is under cylinder head CB900.. To be that the battery 's NEGATIVE terminal right click to go there or Download according to your.! I ’ ll follow up on the surface of the charging system & oil Pressure gauge Combo ( Version! No filters applied Browse by Category,... Rick 's regulator/rectifier Combo - CB350 CB400 CB500 CB550 CB750 rotor! F a CB750F CB750A 30500-300-013 ) is n't shorted.0015 '' feeler gauge by the side of the system. Charging it completely Carb set rubbers with make your assembling procedure a breeze carbs to bike! I 've been through this already of 3A @ motor off, key on _______________ 1b to... Component to fail, but this time I ’ ll follow up on black... Connector ( 14.4VDC ) 7 and 1100 F models, specifically the charging system as the later DOHC,...
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