(800) 853-2651
SHOP NOW

Over Charging battery boiling need help soon please

N

Nzak

Member
I have a 170 gas Allis Chalmers.
It keeps charging and the battery is boiling would it be the voltage regulator or is the battery bad, Battery is old. maybe 6 or so years.
 
EITHER could be the culprit.

On old, failing battery will boil out acid.

A bad voltage regulator can cause the battery to overcharge, making it boil over.

Simple to tell, though. Whip out the 'ol VOM and check the charging voltage.
 
Thanks to all that answer the Voltage regulator was stuck and little tapping on it and it works fine.
 
If the VR's field current control relay is stuck at the high charge position and shes not chattering/cycling she may be overcharging n outgassing the battery n she boils over and that can ruin it........ Once those relay contacts get all burned n pitted and sticking and the silvery coating is gone theyre not gonna perform well.....

John T
 
Take a volt meter and see what the charging voltage is across the battery terminals with the engine at 1/2 throttle or better. On a 12 volt system you should have around 14.5 volts. Your regulator is probably defective if its a lot higher than 14.5 volts. Hal.
 
Replaced voltage regulator but ammeter is showing a slight discharge. Could it be the alternator got damage with the overcharging.
Alternator was very hot when I relized that the voltage regulator was stuck and over charging , when I opened the voltage regulator up it had water in it the seal was bad so it was rusty in the inside and the contact was stuck down. That's why I replaced the Voltage regulator.
 
You must log in or register to reply here.

Similar threads

M
Kohler non-VR 14hp Command Rider CV14ST-1490 charging battery @ 16.0v
Replies
2
Views
137
MrCreosote
M
J
International 786 charging help
Replies
15
Views
639
used red MN
U
T
2001 New Holland 5610S Alternator Question
Replies
13
Views
199
Harry in Ky
H
M
Battery Charging Issue
Replies
8
Views
405
560Dennis
560Dennis
S
Another 8n Charging Issue
Replies
11
Views
418
FWB in SK
F
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top