'B' Transmission seal
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=69754
Printed Date: 30 Jun 2024 at 6:34am
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Topic: 'B' Transmission seal
Posted By: Alberta Phil
Subject: 'B' Transmission seal
Date Posted: 04 May 2013 at 4:59pm
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My '47 B has developed a significant oil leak from the transmission to torque tube joint. I suspect the front seal in the transmission is shot. Can it be replaced by splitting the tractor at that joint? Can the seal be replaced without pulling the whole transmission apart? |
Replies:
Posted By: CTuckerNWIL
Date Posted: 04 May 2013 at 5:22pm
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By looking at the manual I have, you split the torque tube from the front of the tranny, remove a pin or cotter key and then separate them. The seal should be right there in front.
------------- 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: Alberta Phil
Date Posted: 04 May 2013 at 7:58pm
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Thanks, Charlie. I've got a dealership service manual and it is extremely vague on this operation, which is unusual in that they are usually quite detailed. I'll tear into it on Monday. |
Posted By: sparky
Date Posted: 04 May 2013 at 8:24pm
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I had to replace that seal on my CA. I also re-gasketed the lower gear shaft cover cap below it while I was in there.
------------- It's the color tractor my grandpa had! |
Posted By: Cal
Date Posted: 05 May 2013 at 9:18pm
| If I remember correctly when my B had that problem many years ago, when I split the tractor at the tranny there was amouse nest at the rear of the tourqe tube and ahole had rusted through the thin steel cap that covers the lower bearing. a little epoxy and evicting the mice fixed the leak. Then trying to find a dive shaft with a good spline was another problem, Cal in Ct. |
Posted By: Alberta Phil
Date Posted: 06 May 2013 at 9:27pm
Got the tractor split today and found the problem. The seal was a little loose in the seal retainer and the oil was leaking out between the seal and the retainer. The leather on the seal seems to be OK and it fits snug on the shaft. I'm going to replace it anyway. I    have already installed a new gasket on the lower bearing cap.
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