Farm Equipment - D17 series 4 hydraulic pump on an earlier D17?

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D17 series 4 hydraulic pump on an earlier D17?

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=174982
Printed Date: 30 Jun 2025 at 6:13pm
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Topic: D17 series 4 hydraulic pump on an earlier D17?

Posted By: wide
Subject: D17 series 4 hydraulic pump on an earlier D17?
Date Posted: 06 Oct 2020 at 8:31pm

I've read on here that the D17 series 4 has a live hydraulic pump where the pully goes.
You can see it on this one:
https://eauclaire.craigslist.org/grd/d/prentice-allis-chalmers-d17-series-iv/7196317797.html" rel="nofollow - https://eauclaire.craigslist.org/grd/d/prentice-allis-chalmers-d17-series-iv/7196317797.html

It looks like there is a place for it on this series 3 tractor.
https://ottumwa.craigslist.org/grd/d/new-sharon-1963-allis-chalmers-d17/7190356657.html" rel="nofollow - https://ottumwa.craigslist.org/grd/d/new-sharon-1963-allis-chalmers-d17/7190356657.html

Can the series 4 pump be put on an earlier D17?

Replies:

Posted By: AaronSEIA
Date Posted: 06 Oct 2020 at 8:37pm

Nope. Its a totally different torque tube internally.

AaronSEIA

Posted By: Joe(TX)
Date Posted: 06 Oct 2020 at 8:47pm

The plate on the early series was where the belt pulley goes. Would only operate when the clutch is engaged.

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1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A

Posted By: Lonn
Date Posted: 07 Oct 2020 at 8:25pm

The early D17 offered a hydraulic pump that fit in that spot. I'm sure not the same as a Series IV and I'm sure it wasn't a fully independent system. Good luck ever finding one.

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Wink
I am a Russian Bot

Posted By: DrAllis
Date Posted: 07 Oct 2020 at 8:42pm

That "auxiliary" system was 15 GPM (I assume at 1650 RPM ?) and had a separate tank to the right of the seat and a valve stack to the left of the seat. It was also only 1500 psi instead of 3,700 psi or 2,000 psi which was the new standard in the early 1960's. I don't think they sold very many of them.

Posted By: wide
Date Posted: 07 Oct 2020 at 10:30pm

On the D17 series 4 that extra hydraulic pump is live right?
It pumps even with the foot clutch pushed in?

It runs off something that comes before the clutch?
Between the clutch and engine?

Posted By: Bret (OH)
Date Posted: 08 Oct 2020 at 4:37am

The Series IV Hydraulic Pump is driven by a hollow shaft that is splined to the rear of the Pressure Plate. The hollow shaft turns any time the engine is running. The clutch shaft that runs the rest of the gear train is inside of the hollow shaft and is splined to the clutch disc.

Posted By: DrAllis
Date Posted: 08 Oct 2020 at 6:25am

On any series 4, that side mounted pump is STANDARD equipment, not an "extra" pump. There is also a very modern hydraulic valve console to the right of the seat that is also part of the "live" pump system.