Stupid question of the day
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=149574
Printed Date: 23 Oct 2025 at 5:26pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Stupid question of the day
Posted By: Ranse
Subject: Stupid question of the day
Date Posted: 17 Apr 2018 at 12:13pm
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The other day I removed the manifold off the D10 to drill and tap the bolt holes that hold the muffler on. Three of the nuts were so rusty they wouldn't come off. The stud came out of the head instead. Two of the holes were the studs were coolant ran out. After removing the manifold, I screwed the studs back in with my fingers and it seemed to stop the coolant, so I figured once everything was back in tight there wouldn't be a problem. I put the manifold back on today and I've coolant seeping out around these two studs. My first question, is this normal, or is my head damaged? I wouldn't have thought those holes went into the water cavity. Second, I need some type of thread sealant to stop the seeping. Is there something I can use that would handle the heat?
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Replies:
Posted By: Allis dave
Date Posted: 17 Apr 2018 at 1:23pm
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I think it's normal that these go into the water jackets. I put #2 permatex as sealer on mine, but there might be something better.
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Posted By: SteveM C/IL
Date Posted: 17 Apr 2018 at 3:30pm
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even thread tape,but you have to tighten them good in the hole.My 45 goes into water also...
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Posted By: DiyDave
Date Posted: 17 Apr 2018 at 5:25pm
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its normal, prolly will stop, once the rust starts workin, again... If it bothers you, just dip the studs in blue goo, loctite, shellac, thread tape, whatever is handy. If I were putting new studs in, I'd go with locktite, but that's up to you...
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Posted By: Michael V (NM)
Date Posted: 17 Apr 2018 at 6:18pm
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I would use something on the threads that MIGHT let them loose next time
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Posted By: Ranse
Date Posted: 17 Apr 2018 at 7:39pm
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Thanks everyone, I'm glad to hear it's normal. It's probably something a grown man should have already known, but I didn't. I did use some thread tape because that's all I had handy. I knew it would melt, but I thought it might not matter as long as it gummed up the threads. I ran the tractor about an hour afterwards and it seemed to work. I do plan to get new studs later and I will get something better.
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Posted By: Clay
Date Posted: 17 Apr 2018 at 7:42pm
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For holes which are open to the water jacket, I use Permatex #2 Form A Gasket non hardening pliable sealant.
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Posted By: Tracy Martin TN
Date Posted: 17 Apr 2018 at 9:05pm
Permatex non hardening or Laco pipe dope,or tru blue works best. JMHO
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No greater gift than healthy grandkids!
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Posted By: bradley6874
Date Posted: 17 Apr 2018 at 9:12pm
Rantz you put the studs back in without taking the nuts off correct
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You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul
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Posted By: john(MI)
Date Posted: 18 Apr 2018 at 12:38am
If you want to remove the nuts, heat them cherry red and then throw cold water on them. This separates the metals. Work great when I did it in my D14. I did overheat a couple too much, but I was planning on using new nuts anyway.
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D14, D17, 5020, 612H, CASE 446
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