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Osu98 
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Joined: 21 Sep 2025
Location: Oklahoma
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 Topic: D17 manufactured year
Posted: 21 Sep 2025 at 9:10pm |
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Hello everyone, I’m obviously new to this forum. I have a D17 that belongs to my father in law with a loud knock in the lower engine I’m trying to bring back to life.
My main question today is trying to figure out when it was manufactured. We’ve always thought it is a series 4 since that’s what the fuel tank says on the decals. After closer inspection, the left side has all white letters on the engine cover. The right side and fuel tank has black lettering. We found the serial number which is D17 28903. According to google that is a series 1. How can I confirm it really is a series 1? Obviously one or more of the body parts have been replaced at some point in its life.
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DrAllis
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Joined: 12 Sep 2009
Points: 22110
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Posted: 21 Sep 2025 at 10:30pm |
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A legit series 4 has a bank of hydraulic levers to the right of the seat. It also has two external lift arm cylinders about 3 inches in diameter. No other D-17 series has these features. Yours has two levers on the left side of the steering wheel, correct ?? That makes it to not be a series 4. S/n 28903 stamped on the left side of the clutch bell housing makes it a very early 1960 year and a series one. Engine knocking problems and repair parts are pretty much the same thru all ages of D-17's and I assume it is a gas NOT a diesel ??
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7530
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Posted: 22 Sep 2025 at 2:01pm |
A lot of people put series 4 decals on tractors that are not series 4.
True series 4 tractors have a side mounted hydraulic pump (below the fuel tank). Earlier
series did not. No major changes in the engines throughout the D17
production run though.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Lynn Marshall
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Joined: 13 Sep 2009
Location: Dana, Iowa
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Posted: 22 Sep 2025 at 6:40pm |
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Early production D17s used the low pressure, WD style oiling system. I don't remember what year the full flow system was introduced. 1960 maybe???
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DrAllis
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Posted: 22 Sep 2025 at 7:44pm |
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Memory tells me the full-flow oiling system began at chassis s/n 24001 which is late 1959. Dseries4, that is a gorgeous D-17 IV !!!!
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Allis dave
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Joined: 10 May 2012
Location: Northern IN
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Posted: 23 Sep 2025 at 8:21am |
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I was thnking the same thing. D17's are such beautiful tractors when they are fixed up right
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Osu98
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Joined: 21 Sep 2025
Location: Oklahoma
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Posted: 23 Sep 2025 at 9:32pm |
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Thank you everyone for the replies. It is definitely not a series 4. Some body parts must have been replaced at some point in time. This winter I’ll drag it into the shop and fire up the heater. I’m sure I’ll be posting again asking about fixing the knock in the engine.
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