Eastern North Carolina | fairviewfarmer - 12/11/2010 08:09
The only difference was the 4620 had a factory intercooler. The 4520 was known as a "dog" with a bad engine. John Deere had a "recall" on the 4520's where the owner could take it to the JD dealer and deere would install the new turbo and intercooler. (maybe just the intercooler). Other wise the tractors were twins. Both tractors had the 404 cu.in. engine. The 5020, 7520 and 6030 had the 531 cu.in engine.,The latter 2 of these with factory turbo and intercooler.
The early 6030's were non-turbo...... Pretty much a re-badged 5020....
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Deere 4520
