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Cat D6-9U

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berch

06-11-2001 16:21:45




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I'm looking at a Cat D6-9U to work on my land, cutting in a road, pushing down some trees and maybe digging a pond... It is a 1954 model. Please advise the good, bad, and ugly of this machine. I have never owned one but it looks like this one will do the job. It has a pony motor and cable operated blade.

Also, what does it weigh so I will know if I can pull it with a triple axel trailer and a Ford Power Stroke Dully...

All help and insight is appreciated.

Berch
berch@hawk-hill.com

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Jeff Davenport

06-13-2001 05:26:37




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 Re: Cat D6-9U in reply to berch, 06-11-2001 16:21:45  
I very happy with my D69U. Weighs in close to 30,000 pound with the blade. I coverted my too electric start when the pony cratered. Happy digging. Jeff



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Tony M

06-12-2001 19:35:37




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 Re: Cat D6-9U in reply to berch, 06-11-2001 16:21:45  
A 9U D6 was one of the best machines Cat ever made. It has good power, small enough to get in boggy areas, and is balanced very well for grading. The 318 engine will run forever if treated even halfway decent, and do it on very little fuel. I have one (a 1954 at that) with a hydraulic blade. Weight ready to work is a tad over 21,000, that's according to the manuals, I haven't actually weighed mine. I use a single axle B61 Mack, and a 35 ton Phelan lowboy to move mine. If you start hauling something that heavy on a 1 ton, besides being dangerous, the DOT will start looking at you for permits, CDL, weight laws. etc. Just because the engine will pull it doesn't mean the brakes can stop it if you need to in a hurry. As for things to look for. Be sure it has a wet clutch (it has its own dipstick), it is no good for clearing without a wet clutch. If the engine runs, it will probably be OK, they are very durable, as are the finals and transmission. Undercarriage is the most expensive part. If it is worn out, I'd keep looking, a new one is better than $10,000. Hope some of this helps.

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the tractor vet

06-11-2001 17:39:13




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 Re: Cat D6-9U in reply to berch, 06-11-2001 16:21:45  
Back many moons ago i use to run one of them only it had a hdy. blade and it is heavey you will not be able to put that one on a tri axel trailer behind you power stroke it would end up with a hernea . We hauled it behind a B61 Mack on a Rogers lowboy and it would make the old puppy dog smoke on the hills



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Shaun

06-13-2001 05:16:36




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 Re: Re: Cat D6-9U in reply to the tractor vet, 06-11-2001 17:39:13  
I own two D69U dozers and in my opinion it is the best CAT ever built! Extremely tuff engine! The only drawback in my opinion is that it should have come with electric start.Everyone always says that a wet clutch is better but both of mine have dry clutches and I have never had a problem.



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Tony M

06-13-2001 19:50:34




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 Re: Re: Re: Cat D6-9U in reply to Shaun, 06-13-2001 05:16:36  
I have never dealt with a 9U dry clutch, it may be good. My dad ran a 3T and 17A with dry clutches and when clearing you spent half the time trying to adjust the clutch again. When it was hot it slipped, so you'd tighten it, then when it cooled it wouldn't release. The same still occured after a genuine Cat clutch was put in the 3T. After the 17A was converted to wet type, no more problems.



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Glenn Maher

06-13-2001 13:33:20




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 Re: Re: Re: Cat D6-9U in reply to Shaun, 06-13-2001 05:16:36  
I've got 3 and plan to restore one to an ag cat and one a push cat. The third is parts. Love them all. Wouldn't have any other model (1956 wet clutch)



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Tony Barrett

07-18-2001 23:57:37




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 Re: Re: Re: Re: Cat D6-9U in reply to Glenn Maher, 06-13-2001 13:33:20  
I have just purchased AN old D6 9U
which looks ok but the right hand track cracks when it is backed up a steep hill.
I also require a copy of a the operators manual, I believe I can purchase a copy direct from CAT can you say if this is correct



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