Re: WD andWD45

Posted by Brian G. NY on March 16, 2001 at 09:23:54 from (216.238.173.239):

In Reply to: WD andWD45 posted by Shank on March 15, 2001 at 19:54:15:

WD HP: 34.63 belt/30.23 drawbar - WD-45 HP: 43.21 belt/37.84 drawbar. There were running changes made to the WD from 1948 til mid 1953 when the WD-45 replaced it. So.....the fact that it may have the curved shifter(helical gear tranny), the "tall" heads or a distributer will not necessarily indicate the tractor is a WD-45 as these were running changes made to the WD. If the tractor has a serial # of WD144607 or higher it should be a WD-45. Likewise, if the engine serial # begins with 45 rather than WD it should be a WD-45. The most obvious visual difference between a WD & a WD-45 engine is the plate bolted on to the LH side of the WD engine vs. a solid cast block on the WD-45. When looking at a WD-45, you will see that the carb is larger as is the air inlet tube, but these are not too obvious unless you have the two tractors sitting side by side. The stock rear wheel widths are 11" on a WD vs. 13" on a WD-45 and the fenders are a little higher. Many running changes were made to the WD-45 over the years. The snap-coupler was standard equipment on the WD-45 beginning with with Ser. #WD151381 but was optional long before that on the WD and many early WDs were retrofitted with it, as well. The number of plates in the transmission (hand) clutch were increased from 2 to 3 with WD-45s beginning with Ser. #165056 and the WFE front support plate was changed from 3 bolts to 4 with WD-45 Ser. # WD186413. Power Steering was introduced as an option in 1956, but there again, many earlier WDs & WD-45s were retrofitted with it. I'm sure I left out some differences, for example, the radiator shutters were eliminated at some point, but I don't know when.

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