Generator

[Luffydog]

All power generator apg3002d starts and runs fine just not putting out current in plugs. Any thoughts where to start checking or simple things to look for. Thanks

[KE4AVB]

Pull the stator cap. Now find the brush assembly. Note the wire colors and positions. Disconnect the brush wires and tape so they don't contact anything including each other. Now using a 12 v battery connect and apply 12 v to the brushes. Note the brush closest to the bearing is probably +12 v.

Now start the generator motor. Measure for the output voltage at the outlets. If you receive your normal ac voltages then the alternator itself is okay and may have only lost its residual magnetic charge. Stop the the generator, disconnect the battery and reconnect the brush wires as noted before disconnecting them. Now restart the generator and check the output voltage. If it is there then there was a lost magnetism of the rotor; if not then most likely the voltage regulator is bad.

[Luffydog]

Thanks for the info and the info to do it. I'll check it out Monday first thing if I get a chance if not it will be next wk end. I'll post and keep u updated of what I find out. Thanks again

[Deere2me]

You can also flash a generator using the drill technique described here: http://www.endtimesreport.com/dead_gen.html
Scroll down near the bottom.
It works, is simple, and no need to disassemble the unit!

[Luffydog]

thanks deer for the info. ill give it a try when i get a chance.

[Arkie]

Pull the stator cap. Now find the brush assembly. Note the wire colors and positions. Disconnect the brush wires and tape so they don't contact anything including each other. Now using a 12 v battery connect and apply 12 v to the brushes. Note the brush closest to the bearing is probably +12 v.

Now start the generator motor. Measure for the output voltage at the outlets. If you receive your normal ac voltages then the alternator itself is okay and may have only lost its residual magnetic charge. Stop the the generator, disconnect the battery and reconnect the brush wires as noted before disconnecting them. Now restart the generator and check the output voltage. If it is there then there was a lost magnetism of the rotor; if not then most likely the voltage regulator is bad.

A new good 9v transistor radio battery instead of a 12v bat will also do the excitation and won't create smoke if wires get shorted, etc. Have a test lamp plugged into a receptacle outlet when you try the excitation. If it starts genning (the lamp glows but may not be full bright) let it run for awhile before killing the engine so as the rotor gets some residual magnetism..

[Luffydog]

update on the generator. tried the drill no go and also tried 12 volt to brushes and no go... tried it on 3 different generators same thing no go. after trying it on 3 generators and same results for all 3 i dont think wiring the lights up will work either. so thinking it might be other issues besides loosing its mag. anybody ever tried the light thing that it shows in digram? if so what was the results?

[KE4AVB]

Luffy,

Don't know if you got these manuals but they should give you on how the troubleshoot the generators.
https://onedrive.live.com/redir?resid=B990FDA36E55FA13!139&authkey=!AD69wJOYRmV7AbA&ithint=file%2cpdf
https://onedrive.live.com/redir?resid=B990FDA36E55FA13!141&authkey=!ABA_UF2O2Nsgn6w&ithint=file%2cpdf

[Deere2me]

update on the generator. tried the drill no go and also tried 12 volt to brushes and no go... tried it on 3 different generators same thing no go. after trying it on 3 generators and same results for all 3 i dont think wiring the lights up will work either. so thinking it might be other issues besides loosing its mag. anybody ever tried the light thing that it shows in digram? if so what was the results?

I've not used the "lightbulb" setup. The drill trick has worked for me. Here's a link to Dr. Bruces' notebook describing the procedure.http://www.perr.com/tip16.html
You may well have other problems, in which case prolly be a good idea to check out the links provided by Eugene.

[Arkie]

general info to consider:
If the 120 volt plugs have around 6v ac or more the unit usually don't need flashing, it needs other attention. I would try to find some rotor resistance specs for the brush type gen's or at least check the resistance ring to ring and to ground. Most brush gen's rotor resistance brush to brush will be low ohms, (ie 28-50 ohms)
anything higher than 50 ohms is rotor suspect. then check brush to brush and see if reading is same to confirm brush contact as ok.
If you disconnect the other wires from the brushes and connect a 12v bat directly to the brush leads (use a 5 amp fuse in one of the leads) and start the gen you should get around 25 to 65 v AC with the gen running at 3600 rpm or so. If you get this voltage you need to test the exciter portion of the gen, it's diodes and exciter winding. If still no voltage you would need to test ckt breakers, fuses and the AC power stator windings. Note: I'm talking about BRUSH type gennys.

The brushless type have little different troubleshooting procedures and the light bulb or drill method is a easier flash method for the brushless types.[size=150][size=150][size=200] SAFETY PRECAUTION)[/size][/size][/size] (be real careful with the light bulb method on any generator, or you can light up yourself then your lights may go out permanently if you get the polarity reversed and your gen neutral is tied to the chassis)
You can research such with bing and google searchs if you do not realize such)