Transmission tough to get into 3rd and 5th and 7th and 8th
SOURCE: I have a JD 2020 1970. The brakes lock up when I
sounds to me like the caliper/piston/cylinder is freezing up on it
try looking at replacement
SOURCE: diagram for the battery wiring on a 1969 JD 4020
If yoe are still useing two 6v. batteries then the cables go;positive from the starter solenoid to the closest batteries positive post,the negative post of that same battery feeds over to the next batteries positive post,then join the negative to the engine block or tractor frame.If now has 12v. batteries then join up the positive with the positive posts and join the negatives to ground.If the tractor has a 24v system,[not familiar with the tractor ,none in this area and don't have service advisor here at home],hook the twelves up as i previously stated for the 6v batteries.Let me know if you need more help and i can look it up at work for you.
SOURCE: JD 301 industrial loader tractor Overheating
You may need to do a compression test on the engine to confirm whether or not the head-gasket needs to be replaced,that's where i would start if the thermostat is not the problem and the hydraulics are not loading up.Check for oil in the radiator or anti-freeze in the oil as well as for white smoke out of the exhaust,all are indicators of a bad head-gasket.
SOURCE: JD 4020 Row Crop Tractor; No power Steering, No
In regard to the problem - JD 4020 Row Crop Tractor; No power Steering
What was the problem and how did you fix it I'm having a simlar problem
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