Farm Equipment - D 17 electrical?

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D 17 electrical?

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=173100
Printed Date: 01 Apr 2026 at 2:41pm
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Topic: D 17 electrical?

Posted By: jiminnd
Subject: D 17 electrical?
Date Posted: 25 Jul 2020 at 9:15pm

Were all D17s positive ground or did they change on the late ones?

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1945 C, 1949 WF and WD, 1981 185, 1982 8030, unknown D14(nonrunner)

Replies:

Posted By: MACK
Date Posted: 25 Jul 2020 at 9:37pm

All were positive ground. Changed with 100 series. MACk

Posted By: Lonn
Date Posted: 27 Jul 2020 at 7:16am

MACK wrote:

All were positive ground. Changed with 100 series. MACk

Accept for the D21. That was always negative ground. I wonder why Allis didn't switch all models to neg ground when the D21 was introduced?

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I am a Russian Bot

Posted By: DrAllis
Date Posted: 27 Jul 2020 at 7:47am

ANY Allis with a generator was positive ground !! D-21 was an alternator.

Posted By: MACK
Date Posted: 27 Jul 2020 at 8:14am

yes, I forgot the D21. MACK