Loader 3520 hydraulic problems

Corgidude · Oct 12, 2013

I have a 3520 with cx300 loader and when raising loader while moving the loader is jerky and noisy such as a cavitation sound. It has 15 hours on it so I took it back to the dealer to trouble shoot. All flows and pressures supposedly checked out. John Deere sent him an email stating that if the pressures and flow were correct it was within design specs and I would have to live with it. I was floored to say the least! I have had two other JD compacts and loader backhoes and never experienced anything like this.

Anyone have any suggestions or a direct line to JD service? I am very disappointed with the machine and JD service? Thanks

Kenny

J_J · Oct 12, 2013

Look in your tank and see if you see any air bubbles.

If so, check out the suction side of the pump and suction tube for an air leak.

Have you purged the hyd system of air?

Cycle the loader cyl about 10 times, and also the 3pt cyl,

Corgidude · Oct 13, 2013

JJ, haven't done either of these things . Tractor is at the dealer. Been told the JD system self purges air on its own. Any thoughts on how to do this?

Thanks

BigMike50 · Oct 19, 2013

your not alone. many others have this problem. I strted a thread on this and so did some one else. I think its unacceptable. Dealer picked my machine up this week. haven't heard anything yet, I do believe it is a sump issue. There is not enough capacity to supply the ehydro and the implent pump at the same time.
http://www.tractorbynet.com/forums/john-deere-owning-operating/290667-3x20-hydraulics-pump.html

John Deere 3520 Problems

J_J · Oct 20, 2013

Air will self bleed from a hyd system by cycling the attachments about 5 to 10 times.

However, if air is being sucked in through a suction tube, the bleeding will be a repetitive thing,

Fix the source of the air leak.

As far as the volume of fluid, once the attachment is connected to the tractor and the lines and cyl are filled, the level of the fluid must be adjusted.

BigMike50 · Oct 26, 2013

thought I would give my update. Took awhile for diagnosis at the dealer. The manufacture had the dealer do a bunch of things twice to try and remedy. The last resort was to swap out the pump with a new one. That fixed the problem and john deere wants them to ship the old part in for analysis. They have been having several tractors having the problem. This has been a problem since new and the tractor has less than 200 hours on it.

Corgidude · Nov 22, 2013

My John Deere 3520 hydraulic problems are over. I had a good JD dealer that did the honorable thing and refunded my money. JD wasn't willing to try to fix the problem which is evidently a design issue so I went across the street and bought orange. After three JD compact tractors and two zero turns I was very disappointed with JD's approach.

Rockgod · Nov 24, 2013

Corgidude said:
My John Deere 3520 hydraulic problems are over. I had a good JD dealer that did the honorable thing and refunded my money. JD wasn't willing to try to fix the problem which is evidently a design issue so I went across the street and bought orange. After three JD compact tractors and two zero turns I was very disappointed with JD's approach.

Had the same issue with Kubota, hydraulic problems. Like you, I way lucky enough to get fully refunded.

IMO they all seem to have their fair share of issues. Neither seem to be immune.

Corgidude · Nov 25, 2013

Funny how things work out, I went and bought a Kubota L3560! I geuss all brands have their issues. I have a brand new never used Frontier 60" 4 in 1 buck available if you know anyone that needs one. Take care.