my '44 C
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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=22568
Printed Date: 13 Feb 2025 at 3:09pm
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Topic: my '44 C
Posted By: MilesGray (CO/KS)
Subject: my '44 C
Date Posted: 19 Dec 2010 at 7:44pm
Took the valve cover, valves and head off today after checking the compression on all 4 cylinders... 0 compression on all... even after taking the rocker arms off to check compression with all valves closed...
 All the Pushrods are bent...
 Cylinders 1, 2, 3 and 4... Left to right... only cylinder firing was number 1.
  And this is what the Valves looked like...
  Looks like I just started my winter Project... lol! ------------- Miles Gray (CO/KS) 5 1938 B's, 1940 B, 1944 WF C, 1948 NF C, Gleaner A, White Top Rotobaler, 1957 IH Golden Jubilee... I'm either a collector, or crazy! |
Replies:
Posted By: DREAM
Date Posted: 19 Dec 2010 at 8:20pm
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Can't really tell by the picture. Did you have water in those three cylinders? Valves look kinda rusty. If so, you're rings may be stuck in the pistons. This would cause no compression. You say pushrods are bent. How bad? If they are badly bent, you could definitely have had a timing problem, or they were run really loose. I know you had said the governor exploded on it, i'm still thinking you have a timing issue with the gears on the front of the engine. While I had it that far down, I would pull the front cover off and check the timing markings on the gears. ------------- I didn't do it! It was a short, fat, tall, skinny guy that looked like me! |
Posted By: MilesGray (CO/KS)
Date Posted: 19 Dec 2010 at 9:45pm
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Dream, the last time I had it apart, a couple of weeks ago, I replaced the timing gear and put it all back together. I have no water in the cylinders or oil in the water jacket. Pushrods are all bent but not bad (I have no trouble pulling them out, but they are definitely bent). It looks to me like there is only one set of valves (No. 1) that seat properly, the rest are all seated above flush when closed. I will be removing the valves tomorrow and will see if the crud on the back side of the valves is as bad as some of them look on the front.
The engine is loose and I did have it running on one cylinder. It had plenty of oil on the valve train when I opened it up.
It also looks like I have two head gaskets on it, one on the block and one on the head. ------------- Miles Gray (CO/KS) 5 1938 B's, 1940 B, 1944 WF C, 1948 NF C, Gleaner A, White Top Rotobaler, 1957 IH Golden Jubilee... I'm either a collector, or crazy! |
Posted By: MilesGray (CO/KS)
Date Posted: 20 Dec 2010 at 10:51am
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Can I use Electrolysis on the exhaust manifold? What about the Valves? ------------- Miles Gray (CO/KS) 5 1938 B's, 1940 B, 1944 WF C, 1948 NF C, Gleaner A, White Top Rotobaler, 1957 IH Golden Jubilee... I'm either a collector, or crazy! |
Posted By: MilesGray (CO/KS)
Date Posted: 20 Dec 2010 at 9:58pm
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I know nothing of the history of my engine prior to my buying the tractor in 2005, but I guesss it has had a new head put on it as the date on the head shows 3-6-39... After cleaning the valves today, I think the engine has been running on 2 Cylinders for a while (1 and 4)...
------------- Miles Gray (CO/KS) 5 1938 B's, 1940 B, 1944 WF C, 1948 NF C, Gleaner A, White Top Rotobaler, 1957 IH Golden Jubilee... I'm either a collector, or crazy! |
Posted By: JohnCO
Date Posted: 24 Dec 2010 at 1:51am
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Miles, The pistons look pretty oily. I'm thinking Dream is right on both the rings and something isn't right with the rust on the valves. Could be just humidity in your shed. I wonder if the valve timing is right. Two head gaskets sure wouldn't help it run either. May as well pull the pan and check the bearings and also the rings. I've got an extra set of push rods if you need any.
------------- "If at first you don't succeed, get a bigger hammer" Allis Express participant |
Posted By: Bill Long
Date Posted: 24 Dec 2010 at 2:35am
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Very basic question. When you replaced the timing gear did you time it to the crankshaft gear and the govenor mag gear? It does not take much for the engine to be out of time and valves not open properly. As you are aware the marks are there. Let us know how it goes.Merry Christmas and Happy New Year!!!
Good Luck!
Bill Long
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Posted By: Brian Jasper co. Ia
Date Posted: 24 Dec 2010 at 1:51pm
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You definitely have an oil control problem. When the rings no longer are able to seal, oil starts washing the carbon off the pistons. ------------- "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 |