This diode in your generator is an electrical one-way valve, converting alternating current (AC) into direct current (DC) for a stable and reliable power output. It is usually positioned near the stator and endbell. If the diode malfunctions or gets damaged, you might notice issues like inconsistent power output or voltage fluctuations when using electrical devices. A simple multimeter test can determine its functionality, where a proper diode should allow current in one direction and block it in the other. If it fails the test or shows signs of damage, replacement is recommended. For replacement, remove the rear power cover. Carefully detach the old diodes and cut each wire close to where it was soldered to the diodes. Strip about a quarter-inch of insulation from both wire ends and solder them to new diodes. Reattach the new diodes to the power cover. While performing the replacement, you can also add grease to the roller bearing and clean the area where the brushes make contact on the armature. Finally, replace the old carbon brushes with new ones, ensure all wires are properly connected, and reinstall the power cover onto the generator body. It is important to note that this OEM replacement part is sold separately from the carbon brushes, the capacitor, and any accompanying hardware.
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★★★★★
★★★★★
Necessary part to help clean up sine waves
Since two are required for my Coleman generator. One is for the negative sine wave and the other is for the positive sine wave. Along with the capacitor, it helps clean up the power output so it can replicate your power you receive your supplier. It is time to service the generator side of my generator. My generator is not giving any trouble and still works nearly as good as it did when it was new 20 years ago. Since I have to take the end bell off my generator to service the bearing, that would the best time to do some preventive maintenance on it. The exact part(s) are very necessary to keep electrical output problems from occurring. Thanks to ereplacementparts.com for having the parts I needed to complete my service on my generator.
Guest - July 11, 2019
Verified Purchase
★★★★★
★★★★★
Electrically opposite diode from what I needed.......
Found another supplier that had this model of diodes mixed in with older stock. They were able to pick through and get me the ones I needed. The part number on the package was the same for both models of diodes. The only way to tell was to look at the polarity symbol on each diode.
Guest - August 4, 2019
Verified Purchase
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Removed generator rear power cover with #11 socket wrench and #11 box end wrench \"4 bolts\"
Removed both diodes with small socket wrench and snipped each wire close to diodes solder connection. \"Diodes are threaded through bottom of power cover\"
Stripped about 1/4 inch from both wire ends and soldered to both new diodes and
... Read more installed the new diodes back onto the power cover with the original nuts.
While the cover was off added grease to the roller bearing and cleaned the smooth area where the brushes make contact on the exposed armature.
with a small flat blade screwdriver, removed both old brushes at the front side of the power cover and replaced with new ones.
Be sure that (all wires are firmly attached to their connections) and reinstalled the power cover to the generator body.
This has repaired the loss of power production for this Generator.
I have been a industrial maintenance person for more years than I care to admit. Having a basic idea of how a generator works, I took my Milwaukee plug in drill and coupled it nose to nose with my Dewalt 18 volt battery drill using the hex of a screw driving bit. with the Milwaukee plugged into the generator and After generator was starte
... Read mored, drive the Milwaukee with the Dewalt momentarily squeeze the Milwaukee to excite the field. Generator would function until you turned it off. Disassemble the end bell reviled both diodes burnt off at the connecting wire. My ohm meter verified both diodes were open. A search found replacement parts sight with new ones very reasonable. was a obvious replacement task. after installing the 2 drill operation was required one more time. Unit puts out power upon startup as it should now. Out of curiosity I checked voltage at the brushes while the unit was running and producing. The field current was 116 volts dc. The diodes were there for the dc part. I am assuming the capacitor just stores enough current to start the field initially after shut down. Oh well she works like a champ with the parts I obtained from this sight
Tested outlets. No power.
Removed end plate from generator.
Looked at brushes, worn but ok.
Tested diodes. Both were bad.
Attempted to order parts from original manufacturer, Not available.
Thought of ereplacement parts.
They didn\'t have them either, but put on back-order.
Received parts in tw
... Read moreo weeks.
Installed, but still no power.
Arced the brushes briefly with 6 volt current.
Tested outlets with multimeter.
Beautiful 120 volt output, just as required.
Plugged in electric tools to verify.
Good as new.
Removed the four 7/16 Bolts remove the cover from the end remove wires replaced diodes repeated same process.
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