D17 Question
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=208732
Printed Date: 02 Nov 2025 at 8:34pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D17 Question
Posted By: AC ORANGE
Subject: D17 Question
Date 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
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Replies:
Posted By: DrAllis
Date Posted: 31 Oct 2025 at 11:27pm
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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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Posted By: AC ORANGE
Date Posted: 01 Nov 2025 at 10:54am
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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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Posted By: DrAllis
Date Posted: 01 Nov 2025 at 4:59pm
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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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Posted By: Simon2
Date 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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Posted By: 8070nc
Date Posted: 01 Nov 2025 at 8:26pm
Might be a option to put 1/2 to 5/8 bushings in the pedistal
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: 8070nc
Date Posted: 01 Nov 2025 at 8:27pm
Sorry. Got it backwards.
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: 55allis
Date 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.
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1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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