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D17 Question
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AC ORANGE View Drop Down
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Joined: 31 Oct 2025
Location: MISSOURI
Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC ORANGE Quote  Post ReplyReply Direct Link To This Post Topic: D17 Question
    Posted: 31 Oct 2025 at 7:58pm
Will a Series IV D17 rear portion of the tractor bolt up to the earlier series? If so where is the best place to split, bell housing?

Reason I’m asking is I want to take the improved rear of a series IV and install to an earlier series narrow front. The narrow front ends are difficult to find in my area in a series IV.

Is it easier to swap out front ends, from a wide front to a narrow if they are the same across series?

Thanks

Edited by AC ORANGE - 31 Oct 2025 at 8:11pm
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 22150 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 31 Oct 2025 at 11:27pm
On a good day, at my age, I could remove a series 4 wide front axle and replace it with a NF pedestal is under 2 hours. That is the only way to go in your situation.
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Joined: 31 Oct 2025
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC ORANGE Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2025 at 10:54am
That makes sense. Reason I’m asking is I have an opportunity to purchase a non-running wide front series IV and a running narrow front earlier series.
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Points: 22150 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2025 at 4:59pm
Depending on the serial number/age of the narrow front pedestal, it may fit. Oldest versions used 1/2" bolts and later (way before a series 4) used 5/8" hardware.
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Simon2 View Drop Down
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Joined: 22 Nov 2022
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Points: 30 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Simon2 Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2025 at 7:59pm
Dr Allis
Is the 1/2” to 5/8” bolts the only difference?
Can the 1/2” holes be drilled in pedestal for the 5/8 bolts?
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Joined: 21 Mar 2019
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Points: 648 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2025 at 8:26pm
Might be a option to put 1/2 to 5/8 bushings in the pedistal
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Joined: 21 Mar 2019
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Points: 648 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2025 at 8:27pm
Sorry. Got it backwards.
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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55allis View Drop Down
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Joined: 30 Jun 2020
Location: Griswold Iowa
Points: 1115 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 55allis Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2025 at 9:18pm
I just did the other way around…
Put an early d17 wide front on a series 3.
Drilled the holes from 1/2” to 5/8” and will have to cut the rear bracket off and weld it in a different position.
1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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