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D10

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=159656
Printed Date: 28 Sep 2025 at 7:24pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: D10

Posted By: Chris
Subject: D10
Date Posted: 04 Apr 2019 at 9:17pm

Is there much difference between a 61 model and the later model's?

Replies:

Posted By: Eric B
Date Posted: 04 Apr 2019 at 11:16pm

I don't have documentation to prove my comment here but some time back someone said that the early D10's and D12's had the 138 cu. in. engine but that in later models the 149 cu. in. engine was used, the same as in the D14's and early D15's.

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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!

Posted By: Calvin Schmidt
Date Posted: 05 Apr 2019 at 5:48am

Can be a lot of differences. I can better help if I had your D-10 serial number.

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Nothing is impossible if it is properly financed

Posted By: Ted J
Date Posted: 05 Apr 2019 at 2:23pm

Original engine, used until 1961. The 138.7 ci [2.3 L]
The larger, 149 cubic inch, engine was introduced at serial number 3501 in 1961.
HTHs

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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17

Posted By: JayD-17(NY)
Date Posted: 05 Apr 2019 at 4:30pm

One big difference, if I am remembering correctly, is that the early ones (Series I) also did not have any live PTO, but I think maybe by the series II's they did. That's one of the reasons the later ones can be a worth a whole lot more.

Also, The series III's had a hi-lo option for the transmission. I don't think a factory 3 point hitch would have been an available option either until at least the series II's came out?

Posted By: john(MI)
Date Posted: 05 Apr 2019 at 5:00pm

S/N all D10s; 1001-10100, Total Production: 5308

1959 - 1961: G138, Total production with G138, 2148 approx.

D10 G149. Production years G149, 1961 - 1968

Total with G149, 3160 approx.

The series I and II are basically the same with the exception of the engine. Series III started at S/N 9001. The series III offered an optional 2 range transmission. The lights were mounted on the rear fenders.

There are a few changes n the tin throughout production.

Data provided by: "Allis Chalmers Farm Tractors and Crawlers Data Book" Author: Terry Dean. Copy Rite: 2000.

If you need any other info just post what you need.

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D14, D17, 5020, 612H, CASE 446

Posted By: RMD
Date Posted: 07 Apr 2019 at 1:06pm

There was a change mid-1961 that carried through to Series II. The engine was changed as previously discussed and the old WD/CA style hydraulics were eliminated in favor of a gear type hydraulic pump at the rear of the tractor run by a quill shaft through the clutch. The quill shaft design gave the D10/12 true independent hydraulics and PTO.

There was no form of independent PTO on the Series I and early 1961 models. Some had independent hydraulics (without traction booster) if they had the engine mounted hydraulic pump.

The 1961 changes started with D10 SN 3501 and D12 3001.

Posted By: BrianC
Date Posted: 07 Apr 2019 at 6:59pm

The CA had the hand clutch. The D10/12 initially had no similar capability?

If true, was the early D10/12 a step backward?

Posted By: RMD
Date Posted: 09 Apr 2019 at 10:56am

Yes, the early D10/12 had no way to stop the tractor and keep the PTO running. Step on the clutch and you also lost the hydraulics if it had the WD/CA type pump.