katndawg
I am looking for service information on a Generac 10kw gen set, Model G10/1662-2 with a s/n or 0812421. It is a gasoline unit, with the Generac part# 51782 Mazda TC 1.3 liter engine.
Its been setting for several years, and trying to get it back in shape. Biggest issue right now is the Marvel Schebler Model VD carb throttle setting to the mechanical governor, trial and error will
eventually get it working, but instructions will help. The carb also has a solenoid on it, its wiring is disconnected, and I do not see any wire in the harness for it,
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katndawg
Update to this post, the engine is now running good, the carb is adjusted and the mechanical governor is working. Now the issue is that it only makes 40v ac L to N, field boost is functioning, but no voltage regulation, resistance across the brushed was around 6 ohm, cleaned slip rings, and now its down around 1 ohm, but still at 40v ac, have checked all the wiring into the vr, all check good, voltage rheostat checks out, no change when turning pots on vr. It seems to need a new vr, the current vr is a part# 62058, which I gather is replaced by the 67680 and a 73249 jumper harness.
Would still be nice to have some wiring information to check this out properly. I can't seem to find any information on this model of generator, or any parts within it. I would appreciate any help you guys can give me. Thank you
Forgot to add that if I jump the positive field lead at the brushes with 12v dc, the output goes up to about 84v ac L to N, wired for 120/240v 1 ph
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UPS
katndawg;n59952 wrote:
Update to this post, the engine is now running good, the carb is adjusted and the mechanical governor is working. Now the issue is that it only makes 40v ac L to N, field boost is functioning, but no voltage regulation, resistance across the brushed was around 6 ohm, cleaned slip rings, and now its down around 1 ohm, but still at 40v ac, have checked all the wiring into the vr, all check good, voltage rheostat checks out, no change when turning pots on vr. It seems to need a new vr, the current vr is a part# 62058, which I gather is replaced by the 67680 and a 73249 jumper harness.
Would still be nice to have some wiring information to check this out properly. I can't seem to find any information on this model of generator, or any parts within it. I would appreciate any help you guys can give me. Thank you
Forgot to add that if I jump the positive field lead at the brushes with 12v dc, the output goes up to about 84v ac L to N, wired for 120/240v 1 ph


Is it the model being discussed in this older thread? The owner's gallery of pictures still exists:

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UPS
Is it the model being discussed in this older forum thread? The owner posted a link to pictures of the unit, and the link still works.

[URL="https://www.zillerstore.com/forums/forum/generac-generator-part-tracing-and-cross-references/post-up-what-you-need-and-we-will-track-down-the-part-number-for-you/3817-want-part-number-for-a-liquid-cooled-10kw-generator"]https://www.zillerstore.com/forums/f...10kw-generator[/URL]
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Birken Vogt
12V to brushes, your AC output sounds good. You just need to check that 6 and 2 (or 162 or whatever they call it) is good also, this is the DPE winding that powers the regulator, and that the auto-reset breaker on the same is conducting, and that you are getting field flash automatically, and that the wires between the VR and brush are not broken.

If you apply the 12VDC when it is running with the VR connected it should stay generating if the flash circuit is the only problem. If 6-2 is good and the VR is connected and you remove flash and it does not keep generating then the VR is bad. These do fail pretty regular and are kind of expensive so want to cover all the bases first.
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katndawg
[LEFT][COLOR=#252C2F][FONT=Helvetica][SIZE=13px]Is it the model being discussed in this older forum thread? The owner posted a link to pictures of the unit, and the link still works.[/SIZE][/FONT][/COLOR][/LEFT]

[URL="https://www.zillerstore.com/forums/forum/generac-generator-part-tracing-and-cross-references/post-up-what-you-need-and-we-will-track-down-the-part-number-for-you/3817-want-part-number-for-a-liquid-cooled-10kw-generator"]https://www.zillerstore.com/forums/f...10kw-generator[/URL][LEFT][COLOR=#252C2F][FONT=Helvetica][SIZE=13px] [/SIZE][/FONT][/COLOR][/LEFT]

UPS, it appears to be the same model of generator that is being discussed in that older thread.
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katndawg
[LEFT][COLOR=#252C2F][FONT=Helvetica][SIZE=13px]Birken Vogt

12V to brushes, your AC output sounds good. You just need to check that 6 and 2 (or 162 or whatever they call it) is good also, this is the DPE winding that powers the regulator, and that the auto-reset breaker on the same is conducting, and that you are getting field flash automatically, and that the wires between the VR and brush are not broken.

I have checked wiring from brushes to VR, all check good, have checked 6 and 2, and field circuit breaker is good.[/SIZE][/FONT][/COLOR][/LEFT]

[LEFT][COLOR=#252C2F][FONT=Helvetica][SIZE=13px]If you apply the 12VDC when it is running with the VR connected it should stay generating if the flash circuit is the only problem. If 6-2 is good and the VR is connected and you remove flash and it does not keep generating then the VR is bad. These do fail pretty regular and are kind of expensive so want to cover all the bases first.

The generator will start and make 80 volts line to line on its own, with about 6 volts dc at the brushes, if I flash 12v to the brushes, while running, it will go up to about 160 volts line to line, and back down to 80 v when the 12 volts is removed. It will make the same 80 volts with the VR unplugged, and you start the unit.
I do not have any ac voltage to the frequency meter, or for that matter, neither the volt meter, in any position of the voltage select switch. I was thinking that the freq meter did not go thru the selector switch,, but do not know that for sure.[/SIZE][/FONT][/COLOR][/LEFT]
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