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ajl 
Bronze Level
Joined: 31 Dec 2009
Location: Alberta
Points: 115
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 Topic: 4W220
Posted: 19 Jan 2018 at 8:44pm |
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One of these coming up on auction locally in the spring with 7200 hrs. Were all the drive line issues with the 7580 addressed on these? I would just use it with lighter loads as the engines would be identical to a 7080 and have the same issues? Anything to look for on these tractors?
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Lonn
Orange Level
Joined: 16 Sep 2009
Location: Назарово,Russia
Points: 29792
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Posted: 19 Jan 2018 at 9:05pm |
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rpm was slowed down to 2400 rated from the 2550 rated rpm of the 7080 for better reliability.
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jiminnd
Orange Level
Joined: 16 Sep 2009
Location: Rutland ND
Points: 2292
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Posted: 19 Jan 2018 at 9:39pm |
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Don't know much about them but should be collectable, I think less than 500 built.
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1945 C, 1949 WF and WD, 1981 185, 1982 8030, unknown D14(nonrunner)
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Ron Eggen
Orange Level
Joined: 15 Sep 2009
Location: Lohman, Missour
Points: 547
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Posted: 19 Jan 2018 at 10:24pm |
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According to Tharran E. Gaines in a Heritage Iron article in the May/June 2017 issue only 175 units were built , so it is a very collectible A-C tractor.
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Ron Eggen
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Joined: 15 Sep 2009
Location: Lohman, Missour
Points: 547
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Posted: 19 Jan 2018 at 10:30pm |
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He also stated that there were 1,610 units built of the 7580 , which the 4W220 replaced , but the 8070 FWA was introduced in 1983 . It could do anything the 4W220 could and for $10,000 less . So the 4W220 was quietly dropped from production in 1984 .
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