WD transmission top
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=159088
Printed Date: 24 Aug 2025 at 8:06am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD transmission top
Posted By: savedallis1953
Subject: WD transmission top
Date Posted: 16 Mar 2019 at 11:09am
Has anyone ever run across a transmission top like this? ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Replies:
Posted By: savedallis1953
Date Posted: 16 Mar 2019 at 11:10am
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This morning s on a 1953 WD ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: savedallis1953
Date Posted: 16 Mar 2019 at 11:11am
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I hate spell check, well maybe dislike it a lot. ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: JK in Pa
Date Posted: 16 Mar 2019 at 12:09pm
| My 1953 has that cover. See number 144087. |
Posted By: savedallis1953
Date Posted: 17 Mar 2019 at 12:45pm
How do I see the number you posted for me. Mine has a flip seat and what looks like a factory top link on the rockshaft.   ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: Brian G. NY
Date Posted: 17 Mar 2019 at 2:55pm
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Your serial number should be on that flat "boss" just below the LH brake spring hole as seen in one of your pictures. That looks like a professionally built top-link bracket but I don't think it is a factory A-C piece. Here are some pictures of real A-C top-link brackets. As can be seen, the threads on the one in the second picture have apparently been stripped making it necessary to replace the studs with bolts with nuts.   |
Posted By: ac fleet
Date Posted: 17 Mar 2019 at 5:15pm
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PLEASE, guys! Resize your pix. before posting!---Cant see a thing here just some dark corners of something! Perfect size is 640 x 480! Thanks! ------------- http://machinebuildersnetwork.com/ |
Posted By: savedallis1953
Date Posted: 17 Mar 2019 at 8:22pm
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Thank you Brian, I have some knowledge of the W series but am no expert,though I do have a friend that grew up on Allis W models and is quite knowledgeable about A/C and others as well. ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: savedallis1953
Date Posted: 17 Mar 2019 at 8:25pm
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And these items are on WD # 145143, which seems to be close to the end of WD production. ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: savedallis1953
Date Posted: 17 Mar 2019 at 8:28pm
 ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: savedallis1953
Date Posted: 17 Mar 2019 at 8:29pm
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Who ever made this top link was really good. ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: SteveM C/IL
Date Posted: 17 Mar 2019 at 9:29pm
| If a WD it's a late one because it has the curved shifter for the constant mesh trans like the 45's have. Doesn't appear to be a spring hooked in that hole at rear of brakes.Need them springs to keep things in place and prevent wear of shoes. |
Posted By: Brian G. NY
Date Posted: 17 Mar 2019 at 10:26pm
JK, So, your transmission has those 3 "nubs" sticking up as well? I have never seen that but it is obvious they have something to do with the detent springs. Almost like someone went to extreme measures after having difficulty installing the detent balls and springs from the underside? It's sure a mystery to me!
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JK in Pa wrote:Posted By: savedallis1953
Date Posted: 18 Mar 2019 at 7:44am
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Thank you for the brake spring tip, I thought something was amiss. I believe a little over 1000 we're manufactured after the one I have. No shifting while the PTO is spinning so I was pondering a disc brake assembly on the shaft for faster F to R and back to F but I bet someone knows the correct way. Love this site. ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: savedallis1953
Date Posted: 18 Mar 2019 at 7:47am
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and the detent explanation, makes good sense. ------------- 1953 WD, 1953 WD, WD engine with WD-45 crankshaft. |
Posted By: JK in Pa
Date Posted: 18 Mar 2019 at 8:45am
| Yes Brian, just like the one pictured. I always thought it was left over stock from the earlier design and they modified it to save $. The later design has less throw so the detents would have to be moved? I have never compared them but it may have been more complicated than just moving the detent in the rails. |
Posted By: DrAllis
Date Posted: 18 Mar 2019 at 9:36am
| I have seen that design a couple of times over the years. I never really paid any attention as to what year the tractor was built that had that 3-nub cover. I have a very late WD45 and it doesn't have it. I'd suggest that at some point (or more than one) in time they had some shift covers that were made wrong (too deep of spring hole for detent ball) and this was a "salvage" process to avoid having to scrap those shift covers?? Just a thought as to why...…….. |
Posted By: Brian G. NY
Date Posted: 18 Mar 2019 at 1:55pm
OK, so the good Doctor confirms what you guys are saying....there are some out there. I like your theory....it makes sense. I have 3 late model WD-45s and 3 early model (straight shifter) WDs and none have those nubs. The funny part is that his tractor is a fairly late model WD-45 and its not likely there would have been any "left over" covers at that point. Oh well......maybe somebody changed the cover at some point and happened upon one of those oddball units? We will probably never know. It sure was an interesting discussion though!
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Posted By: Brian G. NY
Date Posted: 18 Mar 2019 at 3:03pm
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I think JK solved the mystery! The casting for the curved shifter transmission has a "hump" right where those nubs are. The straight shifter transmission has no hump there. If you look at savedallis' transmission, you will see clearly there is no hump but those nubs stick up in it's place. So.....I would surmise that, like JK says, they used the old castings 'til they were gone but had to make that modification in order to make room for the detent springs.
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Posted By: Brian G. NY
Date Posted: 18 Mar 2019 at 3:35pm
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The first picture shows the straight shifter cover, the second picture shows the curved shifter cover.  
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Posted By: Lonn
Date Posted: 19 Mar 2019 at 6:59am
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I think all the early helical gear transmissions used that cover, late 1952 thru 1953 WD and maybe early WD45. My '53 WD has it but I've never seen a WD45 with one. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: DrAllis
Date Posted: 19 Mar 2019 at 7:08am
| My Dad's 1953 WD did not have those nubs. It was exactly the same as the other three WD-45's that were on our and my Uncle's farms. |