Batteries getting drained on D19
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=31405
Printed Date: 10 Mar 2025 at 6:31am
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Topic: Batteries getting drained on D19
Posted By: nowaktj
Subject: Batteries getting drained on D19
Date Posted: 28 May 2011 at 6:01am
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Hi,
I installed an alternator and repaired some of the wiring on this tractor. Now the batteries are getting drained over night.
The alternator is wired per the instructions I had. Here is the wiring:
- Terminal 1 off the alternator is going to the left side of the ammeter
- Terminal 2 is going to the Bat post on the back of the alternator
- Heavy wire from Bat post is going to the heavy wire that previously went to the generator.
I heard in the past that a person needs to put a diode in. Is that my problem?
Thanks in advance,
Terry
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D19D, D17D, WD, WC, Snobee, #83 Plow, SC Blade, 14' disk, 400 series planter, B , Terra Tiger, M Dozer w/Baker Blade, TL-12, 42S Grader, G
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Replies:
Posted By: Coke-in-MN
Date Posted: 28 May 2011 at 6:12am
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http://www.atlma.us/index.php?topic=43.0 - http://www.atlma.us/index.php?topic=43.0
diode is leaking back to drain battery , one of the 3 diodes on unit may be bad or
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Posted By: Gerald J.
Date Posted: 28 May 2011 at 9:58am
The wire from terminal 1 needs to go to the ignition side of the ignition switch, then it needs a diode or a resistor to keep it from feeding power back and supplying ignition power with the ignition switch shut off. Alternatively an ungrounded switch closed by oil pressure can be used to connect that line.
One or more of the main rectifiers in the alternator can be leaking too.
Gerald J.
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Posted By: nowaktj
Date Posted: 30 May 2011 at 9:48am
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Thanks guys. My error was where I put #1 wire. I now put it on the switch side where it will only have a closed circuit with the switch on.
You guys are the best!!
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D19D, D17D, WD, WC, Snobee, #83 Plow, SC Blade, 14' disk, 400 series planter, B , Terra Tiger, M Dozer w/Baker Blade, TL-12, 42S Grader, G
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