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Car Forum / Nissan / Nissan Cars / July 2005ALternator 'bout to go?
I've noticed that at low idle at night, my headlights "pulsate." Once I rev the motor a bit, however, the pulsating sensation of my headlights disappears. Is this a sign that the voltage regulator in my alternator is about to go, and hence my alternator is getting ready to die? CD > I've noticed that at low idle at night, my headlights "pulsate." Once I > rev the motor a bit, however, the pulsating sensation of my headlights > disappears. Is this a sign that the voltage regulator in my alternator > is about to go, and hence my alternator is getting ready to die? > > CD More likely it's the commutator losing contact with the armature (brushes). Still a failing alt though. I have repaired my alternator about a month ago. Same problem. All I have to do is to replace a brush, clean it up and it is as good as new. Caution, it is tricky to split the alternator in half. You may have to heat the case (slowly) if you decide to do it yourself. A pair of brushes will cost you just a few dollars. somedification to brushes may be required but it is simple if you are handy with a file. > > I've noticed that at low idle at night, my headlights "pulsate." Once I > > rev the motor a bit, however, the pulsating sensation of my headlights [quoted text clipped - 4 lines] > More likely it's the commutator losing contact with the armature > (brushes). Still a failing alt though. > I have repaired my alternator about a month ago. Same problem. All I have > to do is to replace a brush, clean it up and it is as good as new. Caution, [quoted text clipped - 12 lines] >>More likely it's the commutator losing contact with the armature >>(brushes). Still a failing alt though. Never done that before. How do you split up the alternetor? And how do you heat it up? I may try this by buying used one from a junkyard and replace the brushes on that one. CD go to my website: http://www.piczo.com/300z?g=11666382 if the link does not work, type www.300z.piczo.com to see the pictures. Basically, clean the alternator with WD-40 and water. Air dry it a bit. Take the torch (set the flame low) and slightly heating the al. cast next to stator toward the pulley (stator is solder to the back aluminum case so you have to split the front half) and the back aluminum case where the bearing housing is. Becareful not to nurn the conenctor. You need to do this because of the slip ring lock on the bearing shaft. Check the picture. Once it removed, take a multi-meter and check the area where the brush riding on to ground. It should be open. You can make a new set of brushes like I do. It does work. > > I have repaired my alternator about a month ago. Same problem. All I have > > to do is to replace a brush, clean it up and it is as good as new. Caution, [quoted text clipped - 18 lines] > > CD |
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