Question about Coleman Powermate 7,000 Watt 13 Hp Portable Generator #PM0497000

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Coleman generator #PM0497000.02 generator starts well and runs smoothly, yet I have no electrical output. I have purchased replacement brush modules, but am unsure as how to re-excite the unit. The manual specifies for a system that has separate brushes and using a 12volt battery. The brush module is a complete unit. How could I go about re-exciting a unit with this configuration?

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You have to get a cord that has a plug on on it. On the other end of the cord strip the insulation off the ends of the wire about an inch. It would be easier if you put small clamps on the stripped ends of the wire. Connect the black wire to plus on a car battery and white to negative. Start the generator and plug the cord in to a outlet on the generator just for a second and take the plug out. The generator should now be producing electrical current. If not there is something burned out internally.

Posted on Mar 11, 2011

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1 Answer

Generator only produces 70 volts


The resistance between the brushes is the resistance of the commutator and is normally a hundred Ohms or so. Replace the brushes.

Oct 03, 2017 | Coleman Electrical Supplies

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GENERATOR WILL RUN BUT DON'T PRODUCE ELECTRIC


Hi and welcome to FixYa, I am Kelly.

Without a model number... I am guessing about what type / brand and MODEL of generator you have. I have to assume it is a Coleman Power mate.

Try flashing the field. Do this.. take and electric drill and plug into the outlets of the generator. Turn on the output power GENERATOR ON. Squeeze the drill trigger and rotate the chuck as fast as you can. This will induce voltage into the stator and they usually will start producing power. When it does produce power it will try to yank the drill chuck head out of your hand so keep that in mind.

If the above does not work...
Remove the small cover from the center of the endbell. It covers the end of the rotor shaft and has 2 brushes under the cover.
INSPECT the brushes visually (do not remove them yet)
(Generator OFF!)
Use a meter to read resistance by probing the electrical contacts of the brushes. You MUST read LOW resistance. This is the rotor winding.
No resistance or high resistance
Remove the brushes inspect for damage. Try to probe the slip rings of the rotor. (You might have to make a 14/2 Romex electiral wire extension to get some solid copper wires to touch the rotor slip rings) Again you must read LOW reistance.

If you have low resistance and the brushes are good.....
Reinstall the brushes. (TEST for AC) Start generator
STILL NO OUTPUT?!!!!
Use a meter on DC to read AVR voltage output to the brushes by probing the brush terminals. You should read 3 - 7 VDC. No voltage.... hmmmm Possibly an AVR problem but...

Try this.
Rig up a 9 Volt battery that you TAPE the wires to the battery terminals and the case of the battery
Just loosely connect the 2 wires to the brushes. Wrap the battery with a rag it might explode if you don't remove it fast enough. Your going to yank this off as soon as it produces power QUICKLY.

Plug in a light or a small fan so you can see that power is being produced. Let it run a few minutes before shutting it down.

To do anything else I need to know your generator model number to do winding and voltage regulator checks.

Thanks for choosing FixYa,
Kelly

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1 Answer

Problem with the Coleman Power Generators I have a Coleman Vantage 3500 motor runs no generator output what if it doesn't have brushes?


My owners manual says to take it to a service center to get the generator "excited" if it has no brushes. Hope this helps

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1 Answer

Generator runs, but doesn't produce electricity


Manuals and part lists:
http://www.powermate.com/productmanuals.php?cat_id=3

Contact information:
http://www.powermate.com/contact.php

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After working on several of this style coleman generator,i have found that the lead wires in the windings that are soldered to where your brushes would contact tend to break.I don't know if it's a poor design or just a fluke,i would check to see if your getting continuity on the rotor and go from there.They seem to either "burn off" or just break.

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I have a Coleman Vantage 3500 motor runs no generator output


This sound like a loss of residual magnetism in the generator. The field will need to be "flashed".This is also known as re-exciting the field of the generator.
The Coleman manual gives these steps:
1Use a 6 Volt lantern batters (dry cell) or a 12 Volt automotive battery.
2.Disconnect all loads from generator.
3. Remove the brush cover (that's the rectangular plastic cover on the end of the generator.)
4. Plug a lamp or light into the generator before starting the engine. The light will illuminlate when ?Voltage has returned.
5. Start the engine with no load connected to the generator.
6. Attach the "-" lead of the battery to the negative brush. Very briefly touch the "+" lead of the battery to the positive brush. Remove as soon as Voltage builds up.

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2 Answers

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have you conected the brushes on the right way? the leads are + and -.

you can run it up and use a 12v battery and connect it to the brushes correct polarity, with the othe LEADS removed and taped can shock you and chect the out put it it around 100 120v chech the AVR or brush polarity.

If yours dont have brushes it will have a capasitor that is prob out of spec.

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