Garden Tractors - AC5015 not charging

Print Page | Close Window

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: 06 Dec 2025 at 3:05pm
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..

-------------
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

-------------
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: Chester330
Date Posted: 24 Oct 2025 at 2:42pm

Alternator is putting out 20 volts ac

I just replaced the voltage regulator still nothing
Any help will be c appreciated
T GG anks

Posted By: steve(ill)
Date Posted: 25 Oct 2025 at 8:39am

you have an EXTERNAL Voltage regulator ?? If the Alternator is puting out voltage , and there is no charge to the Battery. then you have to have a bad regulator or wire harness ???

where did you get a new regulator ?

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

Posted By: tadams(OH)
Date Posted: 25 Oct 2025 at 1:55pm

Wires not conected to amp gauge