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185 voltage regulator???

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=179427
Printed Date: 27 Jul 2025 at 7:34am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: 185 voltage regulator???
Posted By: IBWD MIke
Subject: 185 voltage regulator???
Date Posted: 29 Mar 2021 at 2:19pm
So, when we had the hood off the 185 something happened and now I've got a clicking noise. It's coming from what looks like a voltage regulator. I didn't think an alternator needed one? I took the cover off, yep, that's where the noise is from. The one solenoid is pulling in three or four times a second. No idea what would have effected this that would make this happen.
Ideas?
Change it out? 
Electricity is not my strong suit.





Replies:
Posted By: DrAllis
Date Posted: 29 Mar 2021 at 3:12pm
That alternator needs a regulator. Has to be a ground wire on it going to the alternator. If alternator is working, the regulator is working. 1970's GMotors regulators.


Posted By: steve(ill)
Date Posted: 29 Mar 2021 at 4:11pm
The coil will pull IN and OUT as it adjusts the charge voltage and current from the alternator.. Maybe cycling a little faster than it use to or a loose bolt on hood / bracket is making it echo and sound louder now than before ?  As Dr said, look at the gauge or check battery charge rate to see if things are OK.

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


Posted By: Alvin M
Date Posted: 29 Mar 2021 at 4:21pm
Should have a black wire from the one mounting bolt on regulator to stud on back of alternator just pushes on stud


Posted By: PaulB
Date Posted: 29 Mar 2021 at 7:23pm
An extra ground wire from the tractor body to the base of the voltage regulator may cure the problem. The remote mounted regulator may not be getting a good enough ground through the sheet metal.  

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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY


Posted By: IBWD MIke
Date Posted: 29 Mar 2021 at 9:19pm
Turns out it was indeed the ground wire. Figured it had to be something that got disturbed fixing the hood.

Thanks for the help. Got the old girl out and went for a brief ride, sounds really good with the new muffler.



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