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Thread: Feild plates ext reg.

  1. #11
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    Now im confused i ran a ground from the ground stud to chassis ground and without any wiring to the positive stud i have continuity from the positive stud to ground.. just grounded the neg stud to chassis ground.. no other wires are attached to the alts..

    frustration factor=High

  2. #12
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    That doesnt sound right your talking about studs on alt right not field plate studs unground the ground stud and test it inside the alt is a six diode rectifier pack it could be shorted both studs are mounted in plastic houseing that used to hold the stock reg they go throught that and inside the case each stud goes through a heat sink of a diode pack and thats where it picks up its voltage i would test on the resistance scale and see what it reads it may not be a short maybe a resistance through the winding noisemaker may know a little more about this i dont rember if mine do that or not

  3. #13
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    Do you have on the back a small wire coming out of the alt and bolted to a bolt with a little spade lug?

  4. #14
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    Try this test on resistance setting in both directions should be open one way and small resistance the other like 5 to 7 range

  5. #15
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    No spade connection .
    im talking about the pos and neg studs on the alts not touching the field plate.. These Leece's. are new.. If i chk continuity just the neg stud to pos stud i get not continuity. If i run from the alt neg stud.. to chassis ground i have continuity direct short/connection between neg and pos stud on the alt. - i dont get it.
    Checked between the pos neg both directions..same reading like its a short.

  6. #16
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    How about no wires hooked up the positive stud to the housing of alternator
    Does this show short if so theres an insulator inside by the diode packs that isolates the stud from the case it may be missing do al the units do this or just one of them

  7. #17
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    Actually to be more specific it insulates the positive diode pack from the case

  8. #18
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    I called it a night .. i will check further tomorrow after work. I know with no wiring to the pos and neg stud there is not a connection between the pos and neg stud. My 275amp leece doesnt not have this situation..just the 320's

    Thanks for you help

  9. #19
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    Thank you Mr Doughboy!! for your ideas and help.

    Ok the mysteries in my mind on Leece Nevilles are no more. Before getting to this point there was a problem when i asked a friend who claimed he "knows leeces" to give me a hand...MISTAKE.. a car battery ..jumper cables and a poof of smoke later!!!!.. Well he knew less then i did!..and after he nuked one of the 320's..i wasnt happy.
    So i did some homework called a guy i worked with when i was working at the Prestolite factory few yrs back..He put me onto the "leece guru"... few answered questions and 1 electrical print and 1 mechanical print i was good to go.
    I found a great authorized leece repair facility in Garfield Nj... they had the Alt repaired and tested ...in 2 hrs with orig leece parts..
    Now understanding /doing.. the conversion from built in reg to external there are no mysteries.. in fact im pretty confident i can answer questions and show someone else how to do it now!!
    I was a rough way to learn a lesson ..but guess it goes with the territory.

    Thanks
    Keith
    D-MAX 2112 NJ
    Last edited by D-MAX 2112; 08-08-2012 at 07:50 PM.

  10. #20
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    So did you get it figured out

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