I have a 318d John deere skid steer. I'm not sure the age but it is decently new. I broke a hydraulic line today and after I fixed it I have bucket tilt up and down but know bucket up and down. The up and down pedal is acting like it is stuck in lock mode. Any ideas thank you.

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.

SOURCE: John Deere 1020 Weak 3 point hydraulics

I would suggest you find a JD dealer and buy a manual if you want to do the maintenance yourself. You can also do a Google search and find manuals.

I would also suggest you completely drain the old hydraulic fluid and replace it with new fluid and a new filter if it has not been serviced any time in the recent past.

The symptoms you describe can be low fluid and/or a clogged filter. If you or anyone else has run the tractor too long and it has low fluids and/or a clogged filter, you can damage the hydraulic pump and that can get costly.

jimmy nutron

• 132 Answers
• Posted on Jun 04, 2009

SOURCE: I have a 1968?? 2020 john deere. The hydraulic

make shure none of your hydrolic cylenders are extended and fill it up till you can stick you finger in there and it barley touches if you do this when cylenders are extended you will over fill it.

SOURCE: Need Sevice and repair manual for a 6400 john deer

Please email [email protected]. I would like to copy your technical and operators manuals, mine i think my x swiped, i really need them,,,,,,thx

miss delynda

Wayne Fellows

• 262 Answers
• Posted on Apr 07, 2010

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

1. This cylinder is not to hard to disassemble.
2. Place upright in vise or suitable bracing.
3. Using a block or dowel of wood(maybe rubber mallet also), depress the top cap of the cylinder to relieve tension on the ring.
4. Use a small edged screw driver or pick and spin "retainer" in until the bent end comes to the opening.
5. Lift up and rotate the ring more to allow the ring to pass over the edge of the opening.
6. Once the retainer is started you can tap it with the wood and rubber mallet around the circumference of the cylinder to release the retainer from the groove.
7. If you havent done so by now the oil should be drained.
8. with the cylinder firm in vise(but not too firm to "distort the integrity of the cylinder.) Place the cylinder Sideways so you can pull out piston and rod assembly.*** Put hose or suitable drain on holes of cylinder***. With the motion of the piston the residual oil will tend to spray out.
9. Pull on the piston and position it to bottom out on the top gland(cap) ie:full extension
10. Place support under the rod to avoid damage. The gland is a tight tolerant fit with use of O-rings and backup rings. Too much offset can lead to damaging gland assembly, and jamming in the cylinder. You may be able to just hold with hand also depends on size, bore, stroke, pressure rating. Use due dilligence.
11. Now that its out you have the piston assembly with gland in hand..**if only the rod comes out there are more steps to take, and you need a new rod but sometimes its more cost effective to buy a new cylinder. If there is a farm supplier or hydraulic dealer near they can certifiably /replace repair the cylinder for you. Hydraulic pressure is kind of like lightening. If it strikes you under pressure it can kill you.*** Using the dead blow or rubber mallet try to pop the gland out by using the piston/rod assembly as the puller. You may not have to remove the top clevice or other end of the cylinder, so maybe you could tap on that.
12. The piston can be removed from the rod depending again on make. Usually a socket head cap screw or king nut holding it in place to the rod.
13. When the piston is removed you should be able to slide gland off also.
14. You'll need that pick and or the screwdriver to pick out the seals carefully. Let me know if you require more...WF Services