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john deere 644

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    John Deere 644G Parking Brake Comes On when The Transmission oil warms up after use for about 30mins to 60mins

    Hi, hopefully, someone else had a similar experience and can give me some guidance. I have a 1993 644G loader with about 9300hrs, The Unit works fine under light load for a longer period. Once the unit starts working and the transmission oil indicator gets to about 1/2 or a little above the warm...
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