WD transmission gear shift
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=140058
Printed Date: 17 Sep 2025 at 2:37pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD transmission gear shift
Posted By: Lew
Subject: WD transmission gear shift
Date Posted: 03 Jul 2017 at 10:05am
| Did AC change the transmission gear shift from straight to curved on the WD? I just pulled my WD home and found that it is a 1951 not a 1948 as I was first told. I was given an axle casting number that I checked on instead of the correct serial number. If the AC Company changed the gear shift what year was that change made? |
Replies:
Posted By: WF owner
Date Posted: 03 Jul 2017 at 10:19am
| The (very) late WD's and all WD45's had the curved shifter. I believe the change from straight to curved took place in the 1953 model year. |
Posted By: DrAllis
Date Posted: 03 Jul 2017 at 12:31pm
| Curved gearshift change happened at s/n 127,007 and up. The transmission was of a constant mesh helical gear design instead if sliding spur gears in the straight gear shift models. The older WD transmission was essentially a WC transmission moved rearward. |
Posted By: Lonn
Date Posted: 03 Jul 2017 at 1:31pm
|
The change took place in 1952 and at serial number as doc quoted ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: WF owner
Date Posted: 03 Jul 2017 at 1:49pm
| According to the serial number reference (from this site), the last WD serial number built in 1952 was 126981. If the change was at serial # 127,007, it had to be in 1953. |
Posted By: Lonn
Date Posted: 03 Jul 2017 at 2:07pm
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
WF owner wrote:Posted By: Brian G. NY
Date Posted: 03 Jul 2017 at 4:48pm
|
There was a break in serial numbers in 1952: First batch: 105182-126931 Second Batch: 127007-131242 The change in transmission style coincides with the second batch of serial numbers. The "Tall" head was introduced in 1951 with "Engine" Serial #289001. I have my Dad's '51 WD with "Engine" serial #309267 and it has the tall head. |