Farm Equipment - AC 170 gas

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AC 170 gas

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=208022
Printed Date: 02 Sep 2025 at 1:51am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC 170 gas

Posted By: Tracy Martin TN
Subject: AC 170 gas
Date Posted: 01 Sep 2025 at 7:02pm

I noticed my gages did not read power today. Put a new battery in it, thought old one was bad, didn't seem to hold a charge. I wonder if my tractor is charging now. Gage doesn't show it.Has factory alternator with the regulator under battery. What is easy way to check this out? What is most likely fix? Thanks, Tracy

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No greater gift than healthy grandkids!

Replies:

Posted By: BillinAlberta
Date Posted: 01 Sep 2025 at 7:22pm

My quick and dirty first step is to get a reading on the voltage with engine stopped and with engine running.No change then pull alternator and take it to a parts store to check function.

It has been the year of the crapped out charging systems for me.One of the D17's,the CA 6 volt genny and Big Al the gas passer(7020 gas) all needed work.

Posted By: BigGuy1000
Date Posted: 01 Sep 2025 at 7:56pm

First check to see if the regulator under the battery on the torque tube has a good ground, the resistance from the bottom mounting plate of the regulator to the tube must be much less than one ohm in order to regulate and charge properly!

Some regulators had a short stranded wire to make this connection.

Clean all!