Question about Nissan Sentra

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I have a Hitachi alternater from a Nissan Sentra 1500 from 1984. I'm going to use it in a small garden tractor. But I'm not shure of how I shall connect the "S" terminal on the alternator. If it should be connnected direct to the battery + pole ore what?? Thanks in advance Erik Velgaard

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  • erik402 Jun 09, 2011

    I can't get it work. Could it be because it has lost its magnetic remanence? Could it be fixed, if I put a pulsing D.C. on the rotor in the right direction? What else could I do?
    Thanks in advance
    Erik

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  • Nissan Master
  • 8,522 Answers

Hi, that is the sense wire and would normally go to the accessory bar of the cabin fuse box. It doesn't matter so much in a tractor. If you have an accessory buss, that is optimal. Otherwise, I would connect it to the ignition--like the coil circuit or positive coil terminal. Please let me know if you have more questions, and thanks for using FixYa.

Posted on May 19, 2011

  • 2 more comments 
  • Jeff Turcotte
    Jeff Turcotte Jun 09, 2011

    most alternators use a stator coil rather than a permanent magnet. If it isn't working, maybe the diodes have blown out. Have it tested at your local car parts chain. If it doesn't pass, maybe you can get another used alternator at a salvage yard.

  • erik402 Jun 10, 2011

    Good morning "jturcotte" and once again thanks for your reply.
    Of course the alternator have a rotor coil, but I thought, that it needed a little remanence to "boot" it. Where should it otherwise get its initial magnetism from, via the lamp?
    The alternater have been stored in my garage for about 12 years, so I thought may be..
    I have checked the diode bridge, its ok.
    Best regards
    Erik

  • Jeff Turcotte
    Jeff Turcotte Jun 10, 2011

    Sorry, I'm not an expert on exactly how alternators work. I don't think storage would affect it. The other thing you can check is the brushes. Use a pencil eraser to clean all the contacts, including the rings on the armature.

  • erik402 Jun 10, 2011

    Hello again "jturcotte" - just thanks for your recommendations. I have checked sliprings and brushes.
    Best regards and stay well
    Erik

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