Garden Tractors - AC5015 not charging

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AC5015 not charging

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=208622
Printed Date: 23 Oct 2025 at 4:11pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC5015 not charging

Posted By: Chester330
Subject: AC5015 not charging
Date Posted: 21 Oct 2025 at 6:01pm

what is the best way to test the alternator and regulator on AC5015

I checked the voltage today running at fast idle was only at 12.73 volts at the battery

thanks

Replies:

Posted By: steve(ill)
Date Posted: 21 Oct 2025 at 8:15pm

i think the 5015 has an alternator with an internal voltage regulator.. Not sure there are parts available for rebuild... Might be cheaper to just install a new aftermarket alternator like a DENSO Mini, etc..

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Like them all, but love the "B"s.

Posted By: Steve in NJ
Date Posted: 22 Oct 2025 at 7:19pm

Take it off and bring it to a local rebuilder to run and load test it. He'll be able to tell you how good it is or how bad. They can be rebuilt, but sometimes it's better to price out a new unit first as Steve mentioned. The little pint size Denso fits a lot of applications with little mods.

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