Farm Equipment - Cut out relay to voltage regulator

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Cut out relay to voltage regulator

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=173426
Printed Date: 03 Sep 2025 at 8:22am
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Topic: Cut out relay to voltage regulator

Posted By: dr p
Subject: Cut out relay to voltage regulator
Date Posted: 09 Aug 2020 at 6:45am

My 6 volt generator was on the fritz so I took it to my local automotive electrical shop for maintainence and she replaced the cut out relay with a three position voltage regulator. I assume the green wire still goes from the resistor to the generator field terminal. But where does the wire from the discharge side of the ammeter go? And since I have a three position light switch, do I now need a two position one?

Replies:

Posted By: ac45dave
Date Posted: 09 Aug 2020 at 7:09am

field wire to switch box no longer needed with regulator.field on gen to field on reg.arm on gen to gen/arm on reg. Hot bat wire to bat on reg.

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54 wd-45gas ; 56 wd-45d N/F w/fact p/s ; 63 d-17 sIII N/F gas ; 60 D14 N/F ; 67 d-17 sIV N/F gas ; 63D15 sII W/F; 39rc#667 ; 2021 massey 4710 fwa ; gravely 2 wheel tractors

Posted By: Steve in NJ
Date Posted: 10 Aug 2020 at 11:52am

Actually, moving to a VR is a nice upgrade for the 6V system. You won't need the 3 position switch for the charging side of the system anymore, but if its equipped with headlights, the switch will still take care of that side of the equation.

Wiring to the VR would be: "F" (Field) to "F" post on Gennie, GEN or "G" to "A" post, Ammeter Neg. side (-) to BAT or "B" terminal on VR. To Polorize, jumper wire from "B" or BAT to "A" or GEN terminal on VR for a couple seconds. You'll get a spark, that's normal. Then fire the Tractor up...

Steve@B&B

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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

Posted By: dr p
Date Posted: 10 Aug 2020 at 9:00pm

Thanks guys