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difference between D17 1,2,3

R

RDR

New User
What is the difference between a series 1, 2, & 3 D17. I know the series 4 was basicly a 170 and I am not sure if they even made a series 2. But What is the difference between a series 1 and 3?

Thanks
 
Exact things I can not say for sure but most of it was small stuff. And yes there was sort of a 1,2,3 but both 1,2 are pretty much not called series just year. I know one improvement was in the transmissions
 
The only difference between 1 and 2 is the paint, persian orange for series 1, persian orange #2 with creme wheels and grill for series 2. Series 3 has dry air filter, oval muffler, taller fenders, headlights on top of fenders, continuous stripe decal, D17 at the front then Allis Chalmers on the hood then Series III on the gas tank.
 
Steelutter,
Not quite as simple as you say!
I have a WD that my Dad and I rebuilt in 1958 when I was still in H.S. and a WD-45 that I acquired about 12 years ago. I also have a Series II D-17 that I bought about 2 years ago.
The difference between the 201 WD and the 226 WD-45 is quiter remarkable. The difference between the 226 WD-45 and the 226 D-17 Series II is also quite remarkable!
The Higher compression in the D-17, as well as the larger carburetor and the higher RPM governor result in significantly more power.
The later Series I and all other D-17s also have the "high pressure", "full flow" oil filter system which increases their reliability.
All D-17 main bearings are of a larger diameter than the WD and WD-45 as well!
Never say that a D-17 engine is the same as a WD-45, even though they are both 226 C.I.D.!
As I recall, the Nebraska test numbers for the WD were about 34 HP, the WD-45 about 45 HP and "all" the D-17s were about 52 HP. Don't "knitpick" me; but that is close!!
 
The "real" differences came with the Series IV, when the 3-PH became a factory option AND the low-pressure/high volume "full time" MODERN hydraulics became standard, replacing the high pressure/low volume system that debuted with the WD in 1948. Also....the D-17 Series IV brakes were improved to include suplemental discs which was carried forward to the 170 series tractors.
I have a Series II D-17 and (if I can ever afford it) I will have a D-17 Series IV!
 
Brian G has the most correct responses of all........only thing I"d add is that the band/disc brakes started with the Series III D17. (Same setup on the Gleaner F2 combine- I have both, have replaced both...identical parts). Earlier differences in the D17 series were mostly cosmetic, paint colors, shape of muffler, etc. HP was consistent. Big change with Series IV was the independent, not just live, hyd. Yes, Series IV had the option of 3ph instead of the Snap-Coupler system. Hyd options did increase over the years as well....selector valves, multiple valves, etc.
 
Series 1 Had an Allis decal on the hood and D17 oval decal on the side panel under the gas tank, WD steering wheel and steel seat and lights on the side of the hood. Series 2 had a grill change Aluminum name plate on hood and a few other miner changes. Series 3 had many changes, Head lights went to the fenders and different fenders New style steering wheel and cushion seat. The wide front was changed, Oil filter system and other engine changes were made and a hydraulic oil filter was added. The oil bath air filter was changed to a dry filter. The muffler went from round to oval and the brakes went from the drum to disc style. The name plates were changed to the long decal. Series 4 saw the addition of the external hydraulic pump and factory 3pt and 2 way hydraulics. The series 4 is one of the best 4 plow utility tractors that was ever built in the 60s and early 70s. There were other changes made over the years, Its hard to remember them all. Bandit
 
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