Question about Briggs & Stratton 11HP 6200W Es Generator

2 Answers

Briggs & Stratton Burnt Brushes

I have a Briggs & Stratton EXL8000 generator. I keep having to replace the brushes. The "furthest in" brush (black wire) is always broken and it appears that the casing for the brush melts. What could be the problem?

Sometimes it will work for a month. Other times a few days and even less.

Posted by kevinper on

Ad

2 Answers

kevinper

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I did find out that the inner slip ring was worn down. Still unknown why and the repair tech we took it to twice just replaced the brushes and never looked at the slip rings.

My solution, which has worked for over two months now (knock on wood) is as follows:

The slip ring on this unit can only be replaced by replacing the whole rotor assembly. I looked at the width of the brushes and the width of slip rings. The slip rings are twice as big as a brush. The solution was to move the brushes outward by one brush length. In order to do that, I had to turn the brush assembly around because of the extra plastic on the unit and space it out one brush length. Note: Still hook the wires as if the brush assembly was not turned around.

I used an old brush assembly and cut the two areas where the screws go through to make my spacers and it works perfectly.

Posted on Dec 03, 2008

Ad

Carl Gehrke

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 169 Answers

Are you running something that has a high startup current? A well pump, air conditioner, air compressor, etc.
All of these things draw more than the rated power from your generator for a little while, then settle down and draw the regular rated power they have on the dataplate. This higher level of power is called the surge rating of the generator ( think the EXL8000 is something like 8250 watts for 30 seconds, check your manual) - if you regularly go over the surge rating you'll burn brushes, mess up slip rings, and potentialy kill a voltage regulator once in a while.

When we calculate how large a generator to use for an emergency backup system we add up all of the currents required by all of the things that have to run, then we calculate the maximum surge power for all the loads that have this requirement. We try and get a generator that will supply the "regular" load at 80% of it's rated capacity and still be able to handle the expected surge load. Sometimes we have to use a larger generator than needed for the regular load to get the surge load to be OK.

So you might need to trade up to the 10Kw Briggs to handle your load.

Carl

Posted on Dec 03, 2008

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Need wiring diagram,from alternator to plug-ins for briggs & Stratton (3500) Elite series Model # 030208-0


No wiring diagram available from Briggs. Try re-magnetizing the rotor. No AVR or Capacitor listed in the parts list.

Disconnect the wires to brushes ( pay attention to the order) and apply 12vdc to brushes. Positive goes to brush closest to the bearing. Start the generator and check for output. If output is normal run the unit a few minutes to ensure re-magnetization then shut down normally. After shut down disconnect the 12 vdc source and re-install the previous disconnected wires. Now re start the generator and test for output should be okay provide there is no problems with the alternator. If no output during the above re-magnetization then your rotor windings my burned out.
25208236-xjbiib4t2p1wjuzy4gozn52g-4-1.png

Oct 10, 2014 | Briggs & Stratton Gas Powered 3500-4375...

2 Answers

Cummins generator starts but no power


Cummins generator set will occasionally encounter generator failure in the process of use that Cummins generator set is not generating electricity. What is the cause of it? And what to do about it? In fact, there are a lot of reasons that Cummins generator set is not generating electricity.
1. Wrong connection of generator set. Processing: check and correct by wiring diagram.
2. Generator speed is too low. Processing: measuring speed and keeping it at rated value.
3. The connection between the stator winding and the generator distribution equipment has sludge or oxide, the connection screw is loose, the connection wire is broken, and the stator winding is broken. Handling: use a multimeter or lamp test method to find out where the wire is broken. Check the connection and contact of each connection screw.
4. Excitation circuit broken or bad contact. Processing: use multimeter to identify broken wire and reweld the broken wire to bind insulation.
5. Rectifying tube (including rectifier diode, thyristor) is damaged. Treatment: replace damaged parts.
6. Brush contact with slip ring bad or brush pressure is not enough. Treatment: clean the surface of the slider ring, polish the brush, make it match with the surface of the slider ring, increase the brush pressure.
7. Brush grip rusts, brush can not slide up and down. Treatment: wipe the inner surface with a cloth brush, if damaged, should be replaced.
8. Cummins generator exciter brush position is incorrect, brush damage or spring pressure is not enough. Handling: adjust the brush to the correct position, replace the brush, adjust the spring pressure.
https://www.dieselgeneratortech.com/cummins
cummins diesel generators-4g5wdwgei0pdvlmlmfm22efu-3-0.jpg

Sep 26, 2014 | Electrical Supplies

1 Answer

To remove engine from generator


Remove cover to the generator and remove the brush holder (if brush type) and any other parts bolted to rear. Remove wiring harness plug (most generators have an easy method to unplug all the wire from panel). Unbolt and remove the outer bell of generator leaving only the armature(use caution not to damage wiring, use camera to photo document the steps ). Remove the center bolt thru armature into crank. With piece of hardwood and large hammer, rap on one side of armature (metal part) then the other (careful not to miss the wood and damage the armature or wiring). The armature sits on tapered crank and will stick over time, may need to use penetrating oil. If your lucky, only takes a few hits on each side to break contact. Good luck

Aug 25, 2011 | Briggs & Stratton Briggs and Stratton...

1 Answer

I have a generator that does not produce any volts. I replaced the brush block because it was bad with no help. I took resistance readings of the rotor and stator. Are these in spec?? briggs and stratton...


As long as you have continuity through the stator and rotor windings, and no continuity from the windings to the core, you should be good.

If the brush block was replaced due to it being defective, take a look at the diode and capacitor regulator as well. Using a multimeter, the diode should indicate continuity in one direction, infinite resistance in the other. If you get this, then replace the capacitor. If not, then replace the diode, and likely the capacitor as well.

May 28, 2010 | Briggs & Stratton Electrical Supplies

1 Answer

I had it repaired about a month ago. it needed brushes. and now today it will run but not put no currant out put so it probaly the same thing. But where can i just buy the brushes myself. cant find...


Try starter / alternator rebuild shops. NAPA auto parts sometimes carries a small selection as well.

If you just had brushes put in a month ago, problem likely lies somewhere else. I have several hundred hours on OEM factory brushes on most of my generators, and no problems. Some sets have brushes that have outlasted the engine. Something else is going on.

Dec 25, 2009 | Briggs & Stratton 6200 Watt Electric Start...

1 Answer

Generator was running and quit generating power but the motor is running good


brushs might need to be polarized-hook jumper cables to a 12v battery and touch to the brush contacts it should work and renew your power out.

Dec 21, 2009 | Briggs & Stratton Power Products 5,550...

2 Answers

I have a Briggs & Stratton Generator 5550Watt model 030253 That is showing an output of only 4.6 Volts at the pannel. Suggestions???


Check to see if this unit has brushes and rings. If it does, then make sure that the brushes are making a good contact on the rings. If the contact is good, then your voltage regulator could be bad. This would require more troubleshooting.

May 04, 2009 | Briggs & Stratton Power Products 5,550...

Not finding what you are looking for?
Briggs & Stratton 11HP 6200W Es Generator Logo

830 people viewed this question

Ask a Question

Usually answered in minutes!

Top Briggs & Stratton Electrical Supplies Experts

John Trevino

Level 3 Expert

1420 Answers

Mike

Level 3 Expert

4369 Answers

Brad Brown

Level 3 Expert

18397 Answers

Are you a Briggs & Stratton Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...