Battery Drain on D17
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=190737
Printed Date: 04 Jan 2025 at 10:20am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Battery Drain on D17
Posted By: JWingerter
Subject: Battery Drain on D17
Date Posted: 17 Sep 2022 at 11:23am
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D17 Series III My battery stays up when I use my tractor. The engine will start the next day. If the big guy sits for a while, then the battery goes down. I inserted my ammeter into the circuit and, yes, there is a small trickle. Where would I reasonable start looking for this drain? ------------- D17 Series III |
Replies:
Posted By: jaybmiller
Date Posted: 17 Sep 2022 at 11:30am
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corrosion on the ammeter posts to mtg bracket ?? The original insulators were 'fibre'(aka paperish), collect moisture, become very weak 'resistors', since there's power to ammeter post 24/7, it'll slowly drain... ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: steve(ill)
Date Posted: 17 Sep 2022 at 12:22pm
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could be the generator / voltage regulator / starter / corrosion on a switch..... You start somewhere like the regulator and take the BAT terminal off, then check for the leak... If thats not it, then take cable off the starter and check for the leak... etc... if you have ONE cable that feeds the lights , starter, etc.. you could pull it. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 17 Sep 2022 at 12:31pm
 Looks like a BLUE wire from Battery cable to ammeter .... then red wire from there to regulator ...... If you take the red wire off you can test the generator and regulator..... there is another wire on the RED terminal of the ammeter.. If you take that wire off, it stops power to the ignition switch / lights so your testing that circuit.
------------- Like them all, but love the "B"s. |
Posted By: captaindana
Date Posted: 17 Sep 2022 at 1:53pm
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Not that this post can solve your issue but on every one of my 23 Allis tractors I have a ‘cut out’ switch on the ground cable so the battery remains isolated when I’m not using them. ------------- Blue Skies and Tail Winds Dana |
Posted By: JC-WI
Date Posted: 17 Sep 2022 at 1:58pm
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If your series 3 has been converted to alternator, I would be
looking at the alternator/regulator circuit. The alternator would
probably have a diode or two taken a dump. If still on
generator, might be the windings in it due to oil or dirt.. or the
regulator, or the ign. switch/ light switch. Or some other oil/grease
covered wire that the insulation has started to crack. One time found the battery drain was a simple crack in the bottom of battery casing that leaked just enough acid to be wet and if the vehicle wasn't started for a couple days, it would drain the battery down. But chances of that being are very slim for that to happen, seen it twice in my life time. ------------- He who says there is no evil has already deceived himself The truth is the truth, sugar coated or not. Trawler II says, "Remember that." |
Posted By: JWingerter
Date Posted: 17 Sep 2022 at 8:14pm
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Referring to the circuit diagram above... Why is this showing positive ground? I thought things were negative ground. ------------- D17 Series III |
Posted By: steve(ill)
Date Posted: 17 Sep 2022 at 8:19pm
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cars, trucks and tractors were all POSITIVE ground in the 1940- 50 era... Many were 6 volts.... about 1960 things started to change and systems were converted to NEGATIVE ground and 12 volts.... by the 1970s things had switched to ALTERNATORS instead of GENERATORS and the standard was 12v NEGATIVE GROUND. What is yours ? It was original POS GROUND... could have been changed over the years... not hard to do... and some had an ALTERNATOR installed in place of the Gennerator.
------------- Like them all, but love the "B"s. |
Posted By: MACK
Date Posted: 17 Sep 2022 at 8:35pm
| First thing. To check would be take battery cables off and let set a few days. Could be battery. MACK |
Posted By: KJCHRIS
Date Posted: 18 Sep 2022 at 10:03am
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Alternator or generator ?? ------------- AC 200, CAH, AC185D bareback, AC 180D bareback, D17 III, WF. D17 Blackbar grill, NF. D15 SFW. Case 1175 CAH, Bobcat 543B, |
Posted By: SteveM C/IL
Date Posted: 18 Sep 2022 at 4:16pm
| Mack's advice is first....have seen batteries die just sitting and new doesn't mean a thing |