Bored and day dreaming
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=100879
Printed Date: 08 Sep 2025 at 11:32pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Bored and day dreaming
Posted By: Mike NEIN
Subject: Bored and day dreaming
Date Posted: 23 Jan 2015 at 1:41pm
I was just wondering, what is inside the D17 seriesIV that runs the hyd. pump? I've never been in one and was wondering how big a job it would be hanging one on an older 17. I know what the end of the belt pulley looks like but wasn't sure how they drove the hyd. pumps. Just brain storming.
Mike
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Replies:
Posted By: IndyD19
Date Posted: 23 Jan 2015 at 2:55pm
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I have one on my d19. Works good but it stops when you push in the clutch.
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Posted By: Skyhighballoon(MO)
Date Posted: 23 Jan 2015 at 3:45pm
D17 Series IV has a hollow quill shaft driven off the front side of the clutch (flywheel?)/ on the engine side running back through the torque tube with a 90 degree shaft to run the pump on the side. Inside the quill shaft driven off the back side of the clutch is the main shaft running to the power director. So when you press the foot clutch the shaft to the PD stops as it's on the back side of the clutch but quill shaft driven off the front side of the clutch keeps spinning giving independent hydraulics.
I'm sure someone will be along to correct the specifics of my explanation above.
Mike
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1981 Gleaner F2 Corn Plus w 13' flex
1968 Gleaner EIII w 10' & 330
1969 180 gas
1965 D17 S-IV gas
1963 D17 S-III gas
1956 WD45 gas NF PS
1956 All-Crop 66 Big Bin
303 wire baler, 716H, 712H mowers
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Posted By: TramwayGuy
Date Posted: 23 Jan 2015 at 4:02pm
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The hollow shaft that runs the hydraulic pump is splined into the pressure plate/spring holder side of the clutch assembly which was bolted to the flywheel, so it always turned when engine was running. IHC did the same thing for live PTO on the Super MTA and others; Oliver did it with the Super 55, and probably others used this method as well.
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Posted By: dustinmo
Date Posted: 23 Jan 2015 at 5:43pm
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tramway is right it runs off the pressure plate but the d10 and 12s series 2 and 3 ran off the flywheel
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Posted By: Mike NEIN
Date Posted: 23 Jan 2015 at 8:31pm
Thanks, we've had a few series I's and II's but never seen the inside of a series IV, just wondered how big of a deal it would be to give an old 17 newer hydraulics.
Mike
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Posted By: dustinmo
Date Posted: 23 Jan 2015 at 8:43pm
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I am going to venture a guess that the torque tube would be different as the hole must be bigger to accomidate the hollow drive shaft and so you would need at least a pressure plate ,torque tube(or be able to machine it out ) hollow shaft, pump drive, pump, and shaft from from a series 4 or early 170, at a minimum, not counting the hyd lines and a valve bopdy, but it could possibly could be done, was at a sale last year where a series 4 sc tractor brought 6 or 700 bucks, (all taken apart and several things missing like 3/4 of the engine and sheet metal and such) may be feasable if you could find a junk series 4 like that
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Posted By: JohnCO
Date Posted: 24 Jan 2015 at 12:28am
It wouldn't be as pretty or anywhere near stock but mounting a pump on the front pully would do the job and not cost a fortune.
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"If at first you don't succeed, get a bigger hammer"
Allis Express participant
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Posted By: DrAllis
Date Posted: 24 Jan 2015 at 6:51am
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The clutch shaft thru the torque housing is different on a Series 4, which would require a double split for access getting one out and then installing it in an older D-17. There may be a small difference at the attachment point on the side of the torque housing, but I don't remember for sure. In the end, it probably could be done, but a front crank driven pump is easier. Just build a guard around it for protection and style.
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Posted By: Don(MO)
Date Posted: 24 Jan 2015 at 8:21am
Looks like a bad case of AC cabin fever. lol
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3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep.
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Posted By: Nathan (SD)
Date Posted: 24 Jan 2015 at 11:13am
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I got the same problem. After seeing DickL cut that torque tube, I been having dreams of a WD with a power director.
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