JD 4440

avant 1735 · Mar 11, 2022

Working on a 4440. The tractor would not go into park. I lubricated the park cable several times. Now the transmission goes into park; however the other day while shifting the tractor the shift lever locked up. I could not go from forward to reverse. It shifted fine in the forward speeds, but I had to get a long screw driver to pry in the shifting mechanism to get the tractor to shift from forward to reverse. This has happened about 3 times since I lubricated the shift cable. Don't know why tis is happening. Any advice would be greatly appreciated

matthies · Mar 11, 2022

Had some thing similar on a 4430. Took the cowling around the right side console in the cab and found a worn down pivot/lever that wasn't changing the fwd/rev mechanism between them. Welded it up, ground it down so it would change from forward to reverse. Helps to have someone in the cab so you can watch whats going on outside on the shift valve. Also try changing from fwd to rev pulling completely down into the corners of the quadrant to have the most movement from the shift lever to change directions. The corners get rounded off of the guide(the piece that shows what gear you are in) and this shortens the stroke of the lever to move the cables to shift.

used red MN · Mar 11, 2022

I will ask, Powershift or Quadrange? Even though many problems could have the same cause between the two they also have some things that could cause these problems which would be quite different between the two transmission types. Just because you lubed a cable does not mean that the lube got to the area it was really needed. Unless you actually have it off the tractor moving back and forth while lubing it and in the end was basically free of any stiffness.

Steve@Advance · Mar 11, 2022

This could be completely off course, I can't picture what the set up is on the tractor, but long ago I had a shift cable suddenly freeze up on a car.

No warning, it just locked up solid, no moving it out of drive.

So I replaced it with a new one. Next day the car was back, same thing, new cable locked in drive.

Upon further investigation, I found the ground cable to the engine block was not making good connection. The heavy current of the starter was going through the body ground, through the shift cable, melting it to the plastic housing.

I know, probably not your situation, but a maybe.

rockcreek4630 · Mar 11, 2022

Assuming it is powershift when you push it out of park you are not getting it all the way out and it will cause your problems I would suggest to change the cable or remove the cowl to lube the top end of the cable.

avant 1735 · Mar 12, 2022

my apologies, it is a power shift. too many things on my mind.

Tx Jim · Mar 13, 2022

I agree with others that state park control cable is the problem although you've lubricated it is still at fault

JD 4440

avant 1735

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matthies

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used red MN

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Steve@Advance

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rockcreek4630

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avant 1735

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Tx Jim

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