D17 series III leak??
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=194734
Printed Date: 31 Oct 2025 at 3:40am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D17 series III leak??
Posted By: BTR
Subject: D17 series III leak??
Date Posted: 20 Apr 2023 at 10:39am
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I have a leak and I am trying to upload a picture to see if someone can help me identify how to fix this issue. |
Replies:
Posted By: BTR
Date Posted: 20 Apr 2023 at 10:48am
| Can someone please tell me how I can upload an image? So much easier than trying to explain where the leak is coming from. |
Posted By: BTR
Date Posted: 20 Apr 2023 at 11:14am
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Posted By: DrAllis
Date Posted: 20 Apr 2023 at 2:27pm
| Missing drive-in plug. Shaped like a disc blade. |
Posted By: BTR
Date Posted: 20 Apr 2023 at 4:37pm
| Would you happen to have a picture of what it looks like, so I can order one? Thank you for the information. |
Posted By: DrAllis
Date Posted: 20 Apr 2023 at 5:17pm
| 70229579 plug from AGCO. I have no idea if it is still available. |
Posted By: BTR
Date Posted: 20 Apr 2023 at 5:56pm
| Thank you so much. I will check and see if I can find one. |
Posted By: steve(ill)
Date Posted: 20 Apr 2023 at 7:29pm
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they are called Welch plugs or Freeze plugs .. used to plug casting holes in engines coolant and oil systems.. If you know the diameter you need, you could go to NAPA and get one... Buy a couple different sizes if you need.
example---  ------------- Like them all, but love the "B"s. |
Posted By: BTR
Date Posted: 20 Apr 2023 at 7:58pm
| Thank you so much. What a huge help!!! |
Posted By: steve(ill)
Date Posted: 20 Apr 2023 at 8:01pm
McMaster Carr catalog.... size chart.. ------------- Like them all, but love the "B"s. |
Posted By: DaveKamp
Date Posted: 21 Apr 2023 at 2:58am
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Notice that the expansion plug is different from the Welch plug... The Welch has a rim. The expansion plug does not. It is round, but no rim... instead, it has a formed depression in the center. To install the expansion plug, you clean the hole out well (carb cleaner, toothbrush, a pick, and some paper towels) place the high side facing OUT... and slip it into the hole. Then use a drift pin, place it on the center high spot, and give it a firm whack with a 4lb hammer. The plug will press flat, and at the same time, expand to fill in the hole tightly. SOME suggest putting some RTV sealant around the inside edge. I generally don't, because the RTV will frequently degrade and then migrate into the area you're trying to keep clean and sealed, plugging up bearings or oil passages. Some situations it's fine, so consult your doctor, ask if RTV is right for you. ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: BTR
Date Posted: 21 Apr 2023 at 4:46am
| Thank you DaveKamp. |
Posted By: Ed (Ont)
Date Posted: 23 Apr 2023 at 8:13am
| I am looking at that pic and it looks like an Allen head plug in the middle of it. Am I seeing it wrong? Right under the yellow tape at leak. |
Posted By: Mikez
Date Posted: 23 Apr 2023 at 8:42am
| Welcome to the forum |
Posted By: BTR
Date Posted: 26 Apr 2023 at 5:35am
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I bought an expansion plug and installed it like y'all said to do. So far no leaks. Fingers crossed. |