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355 Alternator wiring

Discussion in '348/355' started by bobzdar, Jun 15, 2023.

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  1. bobzdar

    bobzdar F1 Veteran

    Sep 22, 2008
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    Pete
    #1 bobzdar, Jun 15, 2023
    Getting ready to replace the voltage regulator and am questioning whether I'm missing a connection. On the alternator there's a stud on the left that appears to have had something attached to it. There is no wire I can find and the ground strap is attached where it was prior to the major (I put the nut back on loosely for it so I'd know which stud it attached to). I don't remember there being anything there, just the 3 prong plug and ground strap. Did I just lose a bolt or is there supposed to be something attached there?
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  2. Qavion

    Qavion F1 World Champ
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    Feb 20, 2015
    14,289
    Sydney
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    Ian Riddell
    #2 Qavion, Jun 15, 2023
    Gizzi and 308 GTB like this.
  3. bobzdar

    bobzdar F1 Veteran

    Sep 22, 2008
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    Pete
    #3 bobzdar, Jun 15, 2023
    Yep, I figured it just lost a nut as I dove further into it and the other two were loose, not even hand tight.

    Here's the voltage regulator, completely fried...
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    Fell apart as I removed it. Put the new (Denso) one in and 14.6V at idle. Took about 20 minutes, super easy job.
     
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  4. Gizzi

    Gizzi F1 Veteran
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    Dec 3, 2011
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    Gezim
    #4 Gizzi, Jun 16, 2023
    Nothing gets attached to it. It's one of the studs that the rectifier mounts to, under the aluminium cover plate. Just put the 8 mm nut back on and tighten it up.
    The earth strap is on one of the 'through bolts'.
     
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  5. Gizzi

    Gizzi F1 Veteran
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    Dec 3, 2011
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    Gezim
    #5 Gizzi, Jun 16, 2023
    Good work.
     
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