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Advise on purchasing a MM 670

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P.Hamel

07-29-2002 18:09:05




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There is an auction this Thursday with a MM 670 Super Diesel with a work master #800 loader for sale. I am not to familiar with MM tractors and was wondering what are some of the things I should look for (eg: weak power steering or hydraulic ect...) I would appreciate any advice.

Thanks




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Scott

07-31-2002 18:47:55




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 Re: Advise on purchasing a MM 670 in reply to P.Hamel, 07-29-2002 18:09:05  
P., There are others much more qualified than I am to answer your question. However, I have a 670 super (gas), and can offer what I (think) I know. Check the amplitorque. To do this, you have to drive it. It should "snap" using about 50 lbs of force from low to high and vice-versa. The drive train should not slip after shifting ranges. It could cost a little, to over $1000.00 to repair/replace. I think, but am not sure, that if it works in high range, but not low range you can still use the tractor in high range with no damage. The low range is an "underdrive" I believe. Enjoy! Scott

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Mike (WA)

08-02-2002 08:39:03




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 Re: Re: Advise on purchasing a MM 670 in reply to Scott, 07-31-2002 18:47:55  
You are correct- if it slips in low, it will generally still work in high. Tractor (and drivetrain) have to be fully warmed up for a fair test- many will slip in low when cold, but work OK when at working temp. Guess I wouldn't disqualify the tractor if amplitorq low is out- its not too useful anyhow, as it doesn't just "split" between the gears, but rather, reduces speed by about a third, and is often slower than the next lower gear in high range. The Oliver two speed gives much less reduction, and is real handy in baling, plowing, etc, when you hit a heavy spot. IMHO.

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