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Discussion Forum
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Re: info on d21

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John W.

09-29-2002 21:02:02




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Matt; With what you provided in the way of info this will be very general. Find out first if it is a series 1,2, or3. is it gas or Diesel. these things DO make a difference. Generally speaking the D-21's are very good all round tractors. Powerful for their size and wieght, HOWEVER, make absolutely certain the power director clutch, which runs the live hyd., and pto is in good working order as these are VERY expensive to replace. Not to mention a big job. rated at 77 to 83 horse power, depending on the series, they are for all intents and purposes fairly stout pullers.
They have extremely tough transmission - differencials and are not prone to break down. The only exception is the series 3 with the perkins diesel, Some have a problem with blowing head gaskets. Aside from that I have had very few problems with any I have owned. The cab is something strange, It must be a adaptation or kit cab, I'm not aware of a fatory cab for the D-21 unless it is something offered late in the production as an option. Hope this helps.

John W.

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What are you talking about?

09-30-2002 19:14:21




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 Re: Re: info on d21 in reply to John W., 09-29-2002 21:02:02  
Uh!



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you are so wrong.

09-30-2002 18:43:58




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 Re: Re: info on d21 in reply to John W., 09-29-2002 21:02:02  
Why post info that is simply not right?



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MADDOG

10-31-2002 06:49:43




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 Re: Re: Re: info on d21 in reply to you are so wrong., 09-30-2002 18:43:58  
I don't know what John W. is talking about; AC NEVER BUILT ANY D-21 Series III. He must be confusing the D-21s with the AC D-17 Series III.
ALso, if your AC D-21 is only pulling 77-90 hosepower; THEN YOU NEED TO PUT PISTONS IN THE EMPTY (2) HOLES. I've NEVER seen ANY D-21 (in GOOD
mechanical condition) that pulled LESS than 110 PTO horsepower on MY CALIBRATED dynamometer!!



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MADDOG

10-30-2002 13:13:05




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 Re: Re: Re: info on d21 in reply to you are so wrong., 09-30-2002 18:43:58  
I've discovered; after 33+ years in the machining business; that many people (including a lot of EXPERIENCED mechanics) simply don't UNDERSTAND the QUESTION!!!!!



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MADDOG

10-30-2002 13:12:55




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 Re: Re: Re: info on d21 in reply to you are so wrong., 09-30-2002 18:43:58  
I've discovered; after 33+ years in the machining business; that many people (including a lot of EXPERIENCED mechanics) simply don't UNDERSTAND the QUESTION!!!!!



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matt

09-30-2002 07:39:43




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 Re: Re: info on d21 in reply to John W., 09-29-2002 21:02:02  
i am sure that the tractor is a diesel and i guess that it would be a series II because it does have a turbo in it thanks.



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