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Allis Chalmers Discussion Forum
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WD pully speed

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JOB

03-06-2010 05:51:25




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I am in the process of buying a WD Allis that has a side pully that goes with the tractor. The pully is currently froze up but was wondering if anyone knew what the speed of the shaft was in relation to engine speed, is it the same. Does anyone know if the pully shaft is smooth with a keyway or is it splined. Thanks for any help.




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John Harmon

03-07-2010 05:48:37




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
My WD's belt pully had a v shaped slot like in the center of the pully,We used that to operate a v belt to run the picker fans.



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JOB

03-07-2010 10:25:36




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 Re: WD pully speed in reply to John Harmon, 03-07-2010 05:48:37  
I am wanting a V belt sheave with 4 groves that 3/4 inch belts can run in.



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Tramway Guy

03-07-2010 19:22:21




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 Re: WD pully speed in reply to JOB, 03-07-2010 10:25:36  
Run the V-belts right on the flat pulley.....you will need more belts than in a proper v-grooved sheave, but it is already there.



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kelly mt

03-06-2010 18:04:26




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
I'm converting my belt drive to run a direct connected hydraulic pump for my loader. I turned a taper ID to fit the shaft and the OD to fit a sprocket to drive the pump. You could use this set up for a pulley. PK



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JMS/.MN

03-07-2010 13:20:01




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 Re: WD pully speed in reply to kelly mt, 03-06-2010 18:04:26  
That does work, but if it"s simpler to run it off the pto, the result would be the same. It still would not be independent pto, and it takes longer for the pulley to quit turning when shifting, etc., than the pto. Crankshaft driven pump bypasses that issue, and is not hard to set up.



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JMS/.MN

03-08-2010 09:03:10




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 Re: WD pully speed in reply to JMS/.MN, 03-07-2010 13:20:01  
Meant to say live or independent hyd.



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JOB

03-07-2010 04:49:45




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 Re: WD pully speed in reply to kelly mt, 03-06-2010 18:04:26  
That was what I was thinking also, have a piece made to fit the tapered shaft and the outside diameter made to fit a taper lock for the sheeve that I would need. Flat belt pulleys of the correct size and correct shaft size are just too hard to come by. I would guess they became obsolete in the 50's when PTO shaft's came out.



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Aaron SEIA

03-06-2010 11:39:23




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
You should be able to do that easily enough. I think AC used a V groove pulley to run the fans on the mounted pickers. Again, "I think". If not there is probably a machine shop somwhere that could easily build a new pulley drive shaft. Just need to put the old gear on the end and you'd be set.

AaronSEIA



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JMS/.MN

03-06-2010 20:09:28




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 Re: WD pully speed in reply to Aaron SEIA, 03-06-2010 11:39:23  
Don"t know about the purpose of the V pulley- I have one, but not used on any equipment. The picker we had back home used a V belt on the flat pulley. Came that way as a unit when Dad bought the WC and picker in 1951. Could very well have used a V style.



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just for fun

03-06-2010 15:18:04




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 Re: WD pully speed in reply to Aaron SEIA, 03-06-2010 11:39:23  
Yes, there is a V-belt pulley made to fit
on the flat belt pulley shaft. I'm sure it was
used for a mounted picker. The center, of mine,
is like a cast, like the flat belt pulley.

Fred



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Bill(Wis)

03-06-2010 17:10:01




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 Re: WD pully speed in reply to just for fun, 03-06-2010 15:18:04  
There was a flat pulley also that had a V in the center of it. I know I've seen several of them. That way you could run a V or a flat with the same pulley.



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JMS/.MN

03-06-2010 09:20:37




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
9 inch diameter, 6 1/2 inch face, 1400 engine speed is 1260 rpm. 1700 engine speed is 1530 rpm. 1400 engine speed is 2969 fpm.



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JoeM(GA)

03-06-2010 06:38:29




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
third party image



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JOB

03-06-2010 11:26:34




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 Re: WD pully speed in reply to JoeM(GA), 03-06-2010 06:38:29  
That picture is a big help, I was hopeing the shaft was straight, not tapered. I was thinking about putting a V belt sheeve on the shaft, replacing the flat belt pulley.

From the looks of the picture the pulley comes off remove snap ring behind drive gear then the shaft can be pressed out. Replace both bearings, reassemble.
Thanks for the picture



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Aaron SEIA

03-06-2010 06:34:10




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
Is is froze tight, or is it simply engaged and the tractor isn't running. There is a large set screw behind the pulley that you run out and slide the belt pulley in and out to engage it.

AaronSEIA



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JOB

03-06-2010 11:07:02




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 Re: WD pully speed in reply to Aaron SEIA, 03-06-2010 06:34:10  
This pully is off the tractor and in a pile, has probably been in the pile 20 years or more. I was hopeing the shaft was straight, not tapered.



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Lonnie Smith

03-06-2010 06:15:23




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 Re: WD pully speed in reply to JOB, 03-06-2010 05:51:25  
The book says 1.11 engine speed to 1 pully, so slightly slower than engine. The pully is held with a key, not a spline. Should just remove large outer nut on pully and pull the pully off.



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