Farm Equipment - D15 transmission/differential

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D15 transmission/differential

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=142500
Printed Date: 04 Oct 2025 at 3:05am
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Topic: D15 transmission/differential

Posted By: yzfarmgirl28
Subject: D15 transmission/differential
Date Posted: 15 Sep 2017 at 8:26pm

Have a series 1 tractor with gear jumping problems . Was changes made to transmission, differential and wheel axles on a series ll.Housing and castings same? Looking possible switch out complete and wonder if that's an option.

Replies:

Posted By: MACK
Date Posted: 15 Sep 2017 at 9:13pm

Before you buy a different transmission check pinion for broken teeth. MACK

Posted By: DSeries4
Date Posted: 15 Sep 2017 at 9:28pm

No transmission or rear end changes between Series I and II models. I have a D15 with a D14 transmission in it.

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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

Posted By: AJ
Date Posted: 15 Sep 2017 at 10:26pm

Series 2 finals are slightly wider than D14s and early D15s.

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Can't fix stupid