freeze plugs
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=11024
Printed Date: 24 Jan 2025 at 3:32am
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Topic: freeze plugs
Posted By: maurice
Subject: freeze plugs
Date Posted: 13 Apr 2010 at 8:02pm
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On a WD, are there freeze plugs in the block that could leak coolant into the engine oil, similar to those freeze plugs in the head that could leak coolant into the oil? BTW, I've got a parts book on order as of a few minutes ago. Thanks! |
Replies:
Posted By: nella(Pa)
Date Posted: 14 Apr 2010 at 5:18am
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No there isn't, but the head gasket can leak and let water into the oil returns from the rocker shaft or the o rings at the bottom of the sleeves can leak.
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Posted By: Brian Jasper co. Ia
Date Posted: 14 Apr 2010 at 6:53am
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I thought there was one on the top of the head under the valve cover. ------------- "Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford |
Posted By: CTuckerNWIL
Date Posted: 14 Apr 2010 at 7:00am
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Brian, there are 3 on top of the head. Read his question again.
------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: Brian Jasper co. Ia
Date Posted: 14 Apr 2010 at 11:57am
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I was thinking there was at least one on the head. So the answer is there are 2 that could leak coolant into the oil on the head, a leaking head gasket, leaking sleeve seals, or cracked block/head. ------------- "Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford |
Posted By: Gerald J.
Date Posted: 14 Apr 2010 at 12:05pm
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Yah Brian, but the head isn't the block that was the original question. Gerald J. |
Posted By: maurice
Date Posted: 14 Apr 2010 at 7:52pm
| CTucker and Gerald, this is ok, I do apperciate all answers! I've got a Wd that IS leaking coolant into the oil, I had taken off the head looking for cause and put on a new head gasket, but still coolant in the oil. A week or so ago, someone posted and I learned that there are freeze plugs in the head. I did not know that and did not look for / inspect for freeze plugs! This weekend I hope to pull it off again to check this. As you might guess, I am not skilled in this. More comments are still welcome. |
Posted By: Bob D. (La)
Date Posted: 15 Apr 2010 at 5:01am
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Maurice, You don't have to pull the head to check the freeze plugs. Just pull the valve cover. They set in the center of the head directly below the rocker arm. If you find a bad one will have to pull rocker arm to replace, but beats pulling head again. Most any of the dealers listed on this web site will be able to provide new plugs if that is your problem. HTH God Bless. ------------- When you find yourself in a hole,PUT DOWN THE SHOVEL!!! |
Posted By: GlenninPA
Date Posted: 15 Apr 2010 at 9:01am
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It is quicker to go to NAPA and get the plugs, no offense to our suppliers here, but this is a "cents" part, not a "dollars" part. you will be running again in hours. The shipping would be way more than the parts!
I keep a box of them on hand because with multiple tractors it is easier to spent the few bucks and never have to make the trip again.....
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Posted By: Gerald J.
Date Posted: 15 Apr 2010 at 9:48am
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Maurice, I've detected on this forum that there is a tendency for those "freeze" plugs on AC heads to rust through and mix water and oil. They are on top the heads under the rocker covers and since water tends to go to the bottom, it rests there. Its likely more of a problem on engines not run much so the water can sit. A worked engine with a good thermostat ought to get hot enough to evaporate water from the top of the head and from the crancase. That is to say, I have read on this forum that needing one or both of those (and if one is rusted through the other can't be far behind) is not a rare happening. Gerald J. |
Posted By: maurice
Date Posted: 15 Apr 2010 at 8:29pm
| I appreciate the info. I'm hoping that this will be simple. Agreed, if one has failed, I will replace both. The only previous freeze plug issue I had was 30+ years ago on a 1967 Ford 390 engine in a Country Sedan wagon. |
Posted By: steve(ill)
Date Posted: 15 Apr 2010 at 8:46pm
 ------------- Like them all, but love the "B"s. |
Posted By: CTuckerNWIL
Date Posted: 15 Apr 2010 at 9:38pm
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Steve, That's some nasty looking foamy oil in that pic. Hope it didn't cause any bearing problems ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: maurice
Date Posted: 19 Apr 2010 at 8:36pm
| Well, it wasn't the freeze plugs. Not room on the calendar for digging deeper in the engine, yet. |
Posted By: mlpankey
Date Posted: 19 Apr 2010 at 8:59pm
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When you get time pull the oil pan .Thermostat so you have unrestricted water flow . pressurize the radiator with a pressure tester. Or you can just fill the block with water block of the radiator and make a improvised way to pressurize block with compressed air from shop air compressor. This with a flashlight looking up at the bottom of the sleeves should show which sleeve is leaking if they are . One of our little trick we use on our dry pressed sleeves( no orings on sleeves) in wet blocks as the 201 and 226 blocks are. Is to remove the water tap on the carb side of the block . Tap it to a air chuck 1/4 inch pipe if it isnt allready . Buy a 1/16 thick gasket material just punch the head bolt holes and leave the bores and water steam holes covered . We then fill the block with water with all the heads outlets blocked and apply regulated air pressure to it and let it set over night . If it has some leakage we then add liquid glass or sodium silicon to the water and pressurize it back up untill it stops seaping water. This keeps the sodium silicon from being ran in the engine after its been built so that it doesnt glue the rings to the pistons or coat the sleeves mainand rod bearing with the glass . It does stop sipage around the sleeves though. Hope all this long post is helpfull If you have any questions for me feal free to ask. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: maurice
Date Posted: 20 Apr 2010 at 5:55am
| Mlpankey, thank you! This gives me a lot to study up on. I assume a WD block fits into this category you describe? (I don't know what a 201 and 226 is, and will need to learn the difference in wet block and not). The first and only time I heard of liquid glass or sodium silicon was during the cash-for-clunkers demolition. I will save this for when I have time to do the work. |