3320 Hydraulics driving me crazy!

[Spindifferent]

I replaced the main filter in bottom of machine and cleaned the inline screen. I didn't think it had another filter! where is sump filter located on a 3320? Is it worth checking even though i didn't find any debris in the other filters?

My JD 3520 Operator's Manual has no mention of a sump filter. Not sure if it exists on the 3000 series.

OMLVU17926_J7

 

[cantbeatadeere]

Sump filter and screen are one in the same. I have a 4710 that shows some chatter now and again weather its the backhoe, grapple or just using the loader. always done it since new, no rhyme or reason and don't matter hot or cold. may go weeks with nothing then feel a couple hits and all good again for quite a while ........???????

 

[Justjake450]

I hate to just deal with something that could be causing damage but that might be my only option!

 

[AKfish]

I hate to just deal with something that could be causing damage but that might be my only option!

After a tour on JDParts, the 3320 does not have a sump screen. Based on your earlier post, you have changed both of the hyd filters. So, that leads to another search for the solution to the problem.

Hydraulic oil frothy or foamy? If you have an air leak or water entrainment in your hyd oil - you'll see that on the dipstick.

When the main hyd pump died on my tractor, it failed in progressive stages. Not an immediate crash. Intermittent loader glitches - loader would not lift off the ground. After ramping up the engine RPM's, the loader would finally lift.

Reverser transmission wouldn't shift F or R quickly. Long pause before trans would engage.

3pt would not consistently lift up or down. Similar to loader symptoms. Usually would finally lift after running the engine throttle up - alot!

Finally, after about 2 weeks or so of glitchy hydraulic performance problems; loader, transmission, 3pt hitch, the steering began to fail!

Now... When a problem of this kind develops - you will see metal particles - in your filters, eventually you could find them collecting in the hyd oil at the drain plug site in the transaxle housing.

All this aside...I don't think you have this type of problem with your 3320. At least, from what I've read in your posts.

 

[cantbeatadeere]

---If-- your tractor is doing the same thing as my 03 4710 which is a light split second glitch, Mine has done it since day one and now has a sliver less than 1500 hrs on it. it's not at all bad in my opinion and is a seldom occurrence. oil is always clean and never foamed. I change the oil, filters and clean the screen every 400 hrs. with Deere filters and low visc. hyguard. always the same and has never changed nor gotten worse.

 

[Justjake450]

No foamy fluid, and will seem to do it just about every time I lift the 3 point if I have something heavy on there. but it doesn't seem to have changed any within the 250 hours or so I have put on it. I thank you all for your input!

 

[beenthere]

Here is a link to some info on the hydro fluids, and mention of tranny chatter.. with what seems like a Deere product to modify friction.
PMB Product:

Not sure if it may help.

 

[jd110]

The product that addresses chatter is for brake chatter. It will not affect hydraulic chatter.

 

[Justjake450]

could the priority valve be causing this. from what i understand its directly fed by the charge pump and since i can see charge pressure drop with the chatter..not sure if it could be just doing its job or have an issue