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ecmn | Well that's an interesting one.
With any hydraulic or transmission problem I would pull the sump screen. And look for brake material. It might not be on the screen. You could have a good pile of it underneath the screen. Not uncommon at all for the brakes to come apart on the six and 7000 series tractors and either plugged a sump screen or put metal dust into the transmission control circuit.
So if you come out of park and go to first gear forward the tractor will slip the transmission. Will it do it if you go into first reverse?
And then once you've engaged in forward for the rest of the time that you're in forward, all four gears are solid? | |
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JD 7400 Transmisssion
