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CASE 450 . DIESEL

Discussion in 'Dozers' started by mcprp, Jul 28, 2019.

  1. mcprp

    mcprp Well-Known Member

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    I have a case 450 sn 3068986 . the manual says it has a generator so at some time someone must have changed it to an alternator . I have the wire schematic for the generator but need a very similar schematic for a alternator. I need to identify where each wire goes to the key switch bat,acc,ign,and swtch .can anyone please help me out with this. IMG_0094.jpg
     
  2. chroniekon

    chroniekon Well-Known Member

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    It depends on what alternator they put on it. There should be some identifying numbers on the alternator.
     
  3. mcprp

    mcprp Well-Known Member

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    well , I didn't see any but its a basic two alternator with a built in voltage regulator . IMG_0398.jpg
     
  4. mcprp

    mcprp Well-Known Member

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    maybe someone can draw me a picture and just show where the wires go eliminating the voltage regulator . . I know the gauges all run to the battery of the switch I need to know starter solenoid , alternator, . to what position on the key switch ( all wires )
     
  5. Tinkerer

    Tinkerer Senior Member

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    Did someone disconnect all of the wires you are referring to ?
    Especially the ignition switch.
    Quiet the challenge for someone to explain all of it over the internet.
    Are you wanting to eliminate the voltage regulator ? That part of your question is confusing, at least it is for me.
    You have a motorola 8AR20262F alternator and the voltage regulator is mounted on the back of it.
     
    Last edited: Jul 29, 2019
  6. mcprp

    mcprp Well-Known Member

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    Brandon_M likes this.
  7. chroniekon

    chroniekon Well-Known Member

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    I googled '450 case dozer alternator wiring diagram' and a number of wiring drawings came up.
     
  8. Welder Dave

    Welder Dave Senior Member

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    That sure looks to be an original alternator.
     
  9. DMiller

    DMiller Senior Member

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    I agree OEM, likely Leece Neville
     
  10. Tinkerer

    Tinkerer Senior Member

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    It is.
    It is a Motorola.
    Case 450's before 7/68 has a generator, anything after 7/68 has an alternator.
    I don't know if Case ever printed an updated service manual fer the 450 with the alternator in the wiring schematic.
    I have the 1973 edition and there is no alternator in the schematics. Only a generator.
    The OP may be S#L for what he wants.
     
    Last edited: Jul 29, 2019
  11. chroniekon

    chroniekon Well-Known Member

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    [​IMG]I found this on a google search. It said it was for a case 450 dozer, but did not specify a year.
     
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  12. DMiller

    DMiller Senior Member

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    Alternator listed, Main Batt wire(P or Purple) and Warning Lamp wire, POSSIBLY a Ground wire to engine or to alternator frame.
     
  13. mcprp

    mcprp Well-Known Member

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    ok so im going to try to make this easier . can anyone connect the dot for me . this is a drawing i made with a close up of the alternator . i dont know which lug on the alternator is positive and which one is the exciter lug . IMG_0099.jpg
     

    Attached Files:

  14. chroniekon

    chroniekon Well-Known Member

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    I'm going to guess the larger stud goes to the starter and the smaller lug is for the exciter circuit.
     
  15. mcprp

    mcprp Well-Known Member

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    ok but can you show me with your own drawing or using microsoft drawing and connect the key switch to the starter and the alternator
     
  16. mcprp

    mcprp Well-Known Member

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    im adummy , i admit it when it comes to electric but this is a basic ingnition . it doesnt get any easier than this . i know you guys have got to know this .
     
  17. mcprp

    mcprp Well-Known Member

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    I WAS REALLY HOPING SOMEONE COULD HELP ME OUT HERE . COME ON FELLA;S THIS IS BASIC , I GOT NO ONE ELSE TO ASK . IVE WATCHED 10 DIFFERENT VIDEO'S LOOKED AT 50 DIFFERENT WIRING DIAGRAMS BUT YOU CAN NEVER SEE THE PLACE ON THE KEY SWITCH IT ATTACHES . AND I REALLY NEED TO KNOW WHICH LUG IS WHICH ON THIS ALTERNATOR . THIS IS THREE BASIC COMPONENTS , I KNOW WHERE THE GAUGES AND THE CIRCUIT BREAKERS GO
     
  18. mcprp

    mcprp Well-Known Member

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    COULD IT BE THIS WAY ?
    IMG_0100.jpg
     
  19. mcprp

    mcprp Well-Known Member

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  20. mcprp

    mcprp Well-Known Member

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    PROBABLY WRONG BUT IM TRYING TO GET SOME KIND OF ANSWER .