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Allis Chalmers WC and WD

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06-29-2002 19:11:50

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I have two questions. First-what is the general difference between a WC and a WD? Is it primarily horsepower? Second-what is the purpose for the hand clutch on a WD and how does it work?

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Tom Talarico

06-30-2002 17:45:24

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 Re: Allis Chalmers WC and WD in reply to Guy, 06-29-2002 19:11:50  
I need the torque specs for the head for a 1940 Allis Chalmers WC.

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06-30-2002 06:45:35

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 Re: Allis Chalmers WC and WD in reply to Guy, 06-29-2002 19:11:50  
WD, power adjusted wheels and Hydrolics with snap coupler hitch, not on WC, first models used same engine, later more power, and the live PTO

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06-29-2002 20:29:57

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 Re: Allis Chalmers WC and WD in reply to Guy, 06-29-2002 19:11:50  
The WC has a long shifter rod... and the WD has a relatively short shifter... WC and WD had different transmission locals... Since i have been working with 2 WDs i can answer the second one as well... the hand clutch operates tractor movement secondaraly from the foot clutch (i.e PTO can keep spinning as long as the foot clutch is engaged... however, the tractor's fwd. rev. movement is only capable if both the foot and hand clutch are engaged) the hand clutch is a luxury when working with the arm-strong steering system... you can feather it in and slightly roll the tractor while still being able to steer and predict tractor swing.

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Jim in Michigan

06-29-2002 20:46:31

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 Re: Re: Allis Chalmers WC and WD in reply to nathan, 06-29-2002 20:29:57  
for the tractor to move, which way does the hand clutch have to be,, forward or backwards. I am trying to get my WD45 up and running and since I have never driven this model I am curious..I also have a WD that I have to rebuild, havent driven either tractor....Thanks,,,Jim

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Allis Puller

06-30-2002 04:22:33

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 Re: Re: Re: Allis Chalmers WC and WD in reply to Jim in Michigan, 06-29-2002 20:46:31  
Back towards you you'll feel it snap in, remember "opposite of John Deere". Also the hand clutch works like having a 2 stage clutch, for example the old 9N's if you were brush hogging and you push in the clutch it will still push the tractor ahead because of the blades still spinning. Well hope you get her back together soon you'll have a great time with it and then want to do another!

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Jim in Michigan

06-30-2002 18:40:09

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 Re: Re: Re: Re: Allis Chalmers WC and WD in reply to Allis Puller, 06-30-2002 04:22:33  
I hear the "snap" but the handle rides almost against my knee.. thats why it seemed weird to me... Bad design I guess,,,Jim

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Gordon in IN

06-30-2002 21:41:13

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 Re: Re: Re: Re: Re: Allis Chalmers WC and WD in reply to Jim in Michigan, 06-30-2002 18:40:09  
You can adjust the linkage to move the hand clutch handle away from your knee when the clutch is in the engaged posiition; or you can move your knee. Sorry, just could not resist. Good luck with your WD.

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Bryan Smith

07-01-2002 06:03:14

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 Re: Re: Re: Re: Re: Re: Allis Chalmers WC and WD in reply to Gordon in IN, 06-30-2002 21:41:13  
My hand clutch almost hits my knee too. It's not supposed to do that (we had a WD45 years ago that I used quite a lot before we traded it in on a D15 Series II) - worn linkage and worn discs in the clutch. Some of it may be adjusted outside, but I'd have to split the tractor I guess to adjust the rest ....

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