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Lew 
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Joined: 09 Jun 2017
Location: Buford, GA
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 Topic: WD transmission gear shift
Posted: 03 Jul 2017 at 10:05am |
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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?
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WF owner
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Joined: 12 May 2013
Location: Bombay NY
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Posted: 03 Jul 2017 at 10:19am |
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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.
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DrAllis
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Posted: 03 Jul 2017 at 12:31pm |
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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.
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Lonn
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Posted: 03 Jul 2017 at 1:31pm |
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The change took place in 1952 and at serial number as doc quoted
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WF owner
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Posted: 03 Jul 2017 at 1:49pm |
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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.
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Lonn
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Posted: 03 Jul 2017 at 2:07pm |
 WF owner wrote:
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. |
You may be right, I think I was mixing up the high cylinder head with the gear shift change. I think it was the high cylinder head that came on in '52.
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Brian G. NY
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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. |
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