Question about John Deere 420,1020,2010,2020,2510,2520 Tractor Float

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I have a jd 2440 tractor with a 146 front end loader. Today when i was using the loader it stopped working right and oil started weeping from the loader hydraulic cylinders. I changed the hydraulic filter and checked connection between tractor and loader but problem persist

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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blueextc3221
  • 15935 Answers

SOURCE: system creeps down even when tractor is operating.

There are 2 potential problems -
1. Leaking spool on the control valve - rebuild the vale.

2. Cylinder blow-by. Disassemble piston and replace the seals.

To test if its the cylinder - retract the cylinders all the way... remove the hoses on the blind end (non rod end) of each cylinder, and again pull the valve to the retract position.

If fluid continues to pour out of the cylinder - the piston seal is damaged, and the affected cylinder must be repaired.

To test if the valve spool is faulty - disconnect the a and b ports just after the valve. Turn on the system and check for seepage from the disconnected lines (without moving the lever).

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Posted on Apr 19, 2009

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mattofilms
  • 110 Answers

SOURCE: I just purchased a 2440 john deere tractor it was

would say that your variable displacement pump has rust or other on/inside, it.

Are you using hydralic fluid (not eng oil) in her?
Can you let it run on blocks for a bit - drain and re-fill transmission?

Posted on Jul 02, 2009

  • 8404 Answers

SOURCE: John Deere 4410 three point hitch will not raise.

Im sorry, I thought you said you changed the oil. My thought was that perhaps the hitch might have bled down during the oil change. That happens occasionally with the tractor I service at work.

I hope you find your trouble. If you could let me know the answer, id appreciate that.

a

Posted on Sep 25, 2009

nova2nv
  • 197 Answers

SOURCE: cannot find where to add hydraulic fluid for the

Yes.

Posted on Feb 24, 2010

  • 468 Answers

SOURCE: i need to rebuild a hydraulic cylinder on a john

You'll have to use a spanner type of wrench and unscrew the end of the cylinder. Once it screws out, the ram will come out, and you will have access to all the seals to replace them.

Posted on Mar 16, 2010

Testimonial: "a spanner wrench is needed but it's not threaded. a snap ring must be removed through a small hole in the side then it slides apart"

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