Sometimes before motorist raises the question of checking the generator of your car.It is very important time to prevent and eliminate possible malfunctions that may result in failure of the battery and problems with starting the engine.The ideal option would be to entrust this work to a specialist, but if this is not possible, you can check the generator and the most at home, the main thing - to have available multimeter.

How to check the generator, without taking a car

In this case, you can check the generator and charging relay.You need to connect the meter to the battery and measure the voltage in different modes in the condition of the working engine.You need to load electrics: turn on / off lights, press on the gas pedal, turn on the stove, and so on.If experimenting in this way, it can be seen that the voltage remains withi
n 14-14,2 V, we can safely say that with a generator and charging relay okay.If there are jumps over 0,5-1 Volta - there are malfunctions.

How else can test generator

First, check the belt tension: sometimes the whole point of its weakening.Disassembled the generator at home, it's worth checking rotor.You need to know what is the resistance between the slip ring stator.If these measures do not exceed 5.10 Ohm, it's all right if the figure is higher - perhaps somewhere there was a break in the windings.Next, using a multimeter is necessary to check the breakdown of each ring to ground.If the resistance between the rotor and each ring is - what about the breakdown can not speak, if it is not - there is a breakdown.When such breakage repair generator at home is not possible.

Check a diode bridge.As is well known, it includes 6 diodes - three positive and three negative.It is necessary to disconnect all leads from the plates with diodes and conduct the test: attach the probes to the terminals of the diode, and then repeat the experiment by swapping them.In one position should hear sound signal while the other is not.If a squeak is heard in both directions, it is a diode of a hole, then, will have to change.But without sufficient experience to make it hard, so you have to change the entire diode plate.

stator need to carefully examine - no burning and damage winding should not be.When you need to ring coil multimeter.Regarding the bearings, then nothing should interfere with the free rotation: there should be no noise and backlash.Brushes should extend beyond the only 5 mm.Scola, seizing and backlash are excluded.If there ever any deviation - it is better to replace.