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A Regulator Rectifier is an electronic unit that takes the AC electrical current generated by the stator, converts that current into DC electrical current, and sends the DC current to the battery. The rectifier portion of the regulator rectifier unit is responsible for converting or rectifying the current from AC to DC, while the regulator portion is responsible for controlling or regulating the amount of current sent to the battery, so that it doesn't damage it. Regulator Rectifier can easily overheat. Ground connections are important for good voltage, and if there is faulty voltage, the regulator rectifier can run hot. Bad grounding, corroded battery connection and poor or loose battery connections will cause faulty voltage.
The electrical system on an Atv is made up of three components: the battery, the stator and the regulator/rectifier.
Testing Regulator Rectifier to see if it’s working properly, need to test each of its diodes to see whether they are forward biasing allowing current flow and reverse biasing preventing current flow correctly.
Common signs that the voltage regulator is going bad. Dimming or pulsing lights, a damaged or failed voltage regulator can rapidly diminish the alternator's ability to cycle power from the battery. Dead battery, a burned-out voltage regulator will diminish the vehicle battery's ability to charge or stop it completely and/or unpredictable engine performance.
Stator is an electric motor that provides a rotating magnetic field that drives the rotating armature; in a generator, the stator converts the rotating magnetic field to electric current. In fluid powered devices, the stator guides the flow of fluid to or from the rotating part of the system.
The stator coil generates power for the spark plug and other accessories on small engines without a stator there would be no spark meaning the engine won't run.
There are a few things that may cause a stator to fail. Too heavy of a load when operating accessories. If plowing or pulling at the same time you would overload the system. This could cause either the stator or rectifier to fry.
Testing the stator pull both the stators pin-connector plugs from the wiring harness, the two plugs each have one male pin and multiple female sockets. Then set a multimeter to the DC “ohm”. Then after test each circuit on each plug separately if a circuit does not produce a reading then it’s faulty, indicating the coil connected to that circuit requires rebuilding or replacement.
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