The two wires will have 12 volts on them during the cleaning step. If you have corrosion on the connections of your battery, shut the engine off and use a solution of baking soda and water, along with a brush, to clean the contacts. Retired from the trucking industry, will be getting a new diesel pusher next year and want to do all the preventive maintenance myself. Periodically take resistance readings and clean the brushes and slip rings if necessary. 5. You can remedy this by using an electric motor as a generator. If they're not you need to clean them. It’ll come in very handy for me as I do all my own servicing. The GenSet was repaired and we were on our way by 6pm. Am cleaning brushes and rings this am but expect regulator is problem. Wipe down the coils with a cloth dampened with industrial cleaning solvent. Do you mean the engine siezed? I can’t get any voltage at the brushes. From now on, you will not have to fear to fry your sensitive equipment over a compromised electrical system. The voltage regulator attempts to maintain a constant output voltage by supplying enough current to support the load. 13. However, “the little brush gets all the blame” is a statement commonly heard in the industry, but the blame is usually misdirected. Re: Generator slip ring cleaning/carbon brush maintenance, a how to and why. Thanks again to Generator Technologies. Need to know the full model number to get you the right ones though, as there were many variations. On Generac side by side units, the brushes and slip rings are on top of the belt driven generator under a plastic cover. The Rotor. The on the M3 wheel came right off after removing the three small nuts. Any other info you can give would be helpfull. Haven't decoded the serial numbers on the others yet. If not, you probably need a regulator. If you let go of the switch the engine will stop. model no k662ep serial no 33111b gen no 5rm21 4531a serial no 270589. where could i find a owners manual or a repair manual and how old my generator is . Another tool that works well to help remove both powder and liquid makeup from brushes is the Sigma Spa 2X Brush Cleaning Glove, which features two sides (one for eye brushes … Before testing the rotor,inspect the brushes and slip rings. The motor brush only exists in DC generator, which is used to realize mechanical commutation with commutator, that is, to ensure that the input to DC motor or DC generator output is DC current. Ring cleaning material such as: a. Commutator stones, coarse and fine and a short piece of rubber heater hose to hold stones. 9b. FX Williams. If you turn an electric motor using another motor or engine, the motor will generate electricity. With that in mind, the problem on a BGE, BGM, NHE, NHM could be either a need for slip ring cleaning or a new regulator or both. We’re just finishing up round two of bladder cancer and I’m finally starting to feel better. 7. The ends of the brushes must be shaped to match the curve of the commutator. Cleaning your dirty generator power is not as hard as it may seem. Socket or Torx screwdrivers, electrical tape. Measure the resistance from one brush terminal to the other with the multi meter and compare the reading with the “rotor ohms” spec in the service manual. b. small piece of wood and a “Scotch Brite” pad. 3. brass brush. To test the rotor with a volt-ohm-milliameter VOM,set the VOM to its “OHM” scale and zero the meter.Then,test for brushes to go across and shorten the life of the brushes. Thanks for the great genset cleaning instructions. old MH 454 threw a rod.locked it up-. Wrap a piece of “Scotch Brite” around a small piece of wood (popsicle stick, part of a paint stirrer, etc.) Examples of slip rings and brushes on generators/dynamos from the 1880s to today. Will you please drop me a email, my onan5500 gold turns over but dies when i let off the swich i pulled out the brushes thay look good hou do i test them do i ohm brush to brush??? I had been having issues with my Onan 5.5 for over a month, when we pulled into Virginia Beach I tried the Onan dealer but they could not get me in for at least a week. 18. z Note if copper dust is present on the brush-holders or on the brush-holder arms. There could be a couple of things wrong with your unit. The Problem: Over a period of time, generator slip rings become tarnished, oxidized and coated with dirt and carbon. Using Soap and Water Know how often to wash your brushes. 8. 12. Run it at least 4 or more hours at this load level. and secure it with a rubber band. This current/voltage signal comes from the control circuit during starting and the voltage regulator during operation. The layer can build up to such a level that the field flash circuit can’t get through it and it may overload the voltage regulator to the point of burnout of its’ power circuit. Basic components include Brushes,armature,field coils 2. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. Replace brushes if they are worn excessively,or if they are cracked or damaged.Do not use any metallic grit to clean up slip rings. Thanks for the technical tips. I have the same exact generator in my old Broke Down 84..Pace Arrow Motorhome--- I ran it last year & it still had out put this year. One common problem is sparking at the brush face, which is usually the first symptom of trouble elsewhere.