NX5510 - No hydraulics after filter and fluid change

[K5lwq]

In this case the oil was too cold to prime up. The OP has fixed the issue. But welcome everyone to TBN.

 

[oneal hicks]

Sounds to that you have air trapped in the system, if so you don't need air pressure you already have air in the system. I would bleed the air off much like bleed brakes on a car. I would start the pump crack loose a hydraulic fitting pull the corresponding operation lever and you will likely hear the air being purged when all the air is out and the fluid comes out tighten the fitting. (May take more than one try) When all the air has been purged the system should work properly.

 

[leegersch]

When I bought my 3510hst six years ago the dealer warned me that he had had issues with poor hydraulic performance after installing Traveller fluid for the first time. Claimed it had a high concentration of water soluble ingredients. Esp bad in cold weather. I’ve always used Mobilfluid.

 

[vinpep]

For whatever it may be worth, I had the same problem with the hydraulics that nothing would work. This happened with my 585 Case. Although there was no oil leak (after reading the Case manual before doing the oil change) it stated do not over tighten the vertical filter cap. That proved to be my problem as I was to cautious with the tightness of the screw. Tightened the screw more and hydraulics worked. I only have transmission filter on system.

 

[Zmann.]

In this case the oil was too cold to prime up. The OP has fixed the issue. But welcome everyone to TBN.

Agreed and who would want to keep a fluid like this in their tractor ?
Either the spec is wrong or the fluid does not meet the spec

 

[RandR10]

Possibly related to your issue. I've got an old Kioti LB2204 with the gear drive not HST, but the loader/3-point hydraulics will not move or will only slowly inch for a minute or two when I first fire it up if it's below say 40 degrees out, but the steering works just fine. There's a priority valve in the circuit to supply the steering. I was thinking the flow characteristics of the oil at low temps is causing the valve to bypass 100% of the fluid to the steering until it warms up a few degrees from running, but maybe the fluid just won't flow enough to run the loader at all from being too thick at those temps. Anyway, I'm wondering if it's just simply the wrong fluid characteristics even though it says it meets the spec. I'm running the VP Racing J20A utility tractor fluid right now FYI. Did a complete fluid change and new filter when I rebuilt the engine late 2021 because I had to remove the hydraulic intake pipe to get at some stuff, which drained the gearbox. I know all hydraulics always move a bit slower at low temps but this is a new experience for me.

 

[Hodado]

Hopefully you can get it working properly Guess I’ll remember to avoid changing fluid in colder temperatures

 

[eriejake]

I've done a fair number of fluid changes and this is the first time I've encountered this. Loader jerks a few inches and that's it. PTO spins, but it doesn't seem very vigorous. Steering isn't happening (no power).

I'd over-filled a bit so I removed fluid to just under full.

Haven't run for more than a couple of minutes (total) for fear of damaging something. All Kioti filters. No issues changing anything. I am using semi-synthetic fluid, spec'd better than Kioti.

How best to work through this?

I know you said you used all Kioti filters, however, I had this happen to me once before on a Cub Cadet I was working on. It will be a slight nuisance, but drain fluid and put old filter on and try it. If it works, you just might have gotten a bad filter. Better than chasing your tail "looking" for solutions. Good luck.

 

[Frank Surber]

I don't know about your tractor but some of the older tractors and equipment I've worked on over the years with horizontal filters dad a plug in the top of the filter housing, to fill the filters after installing

 

[stuckinnj]

I don't know about your tractor but some of the older tractors and equipment I've worked on over the years with horizontal filters dad a plug in the top of the filter housing, to fill the filters after installing

Like oil conversations, filling filters prior to install is highly contentious. I have alway filled my filters prior to install. For one installed horizontally, stand upright, fill till full, let sit for a minute or so allowing the filter media to absorb fluid. Once absorbed, you can cleanly install horizontally without fluid loss. Wet media vs dry is always better and pushes any air out.

Do what you may, IMHO, this has prevented any oiling issues from my mowers, tractors, Harley’s to all my 4 wheel vehicles.

 

[pcman]

What about filling the hydraulic fluid from 1/2 on the stick to right to the full mark?
When you put the old filter back on did you confirm that there was not a doubled up gasket left on the case?
You mention a different fluid... What fluid are you using specifically?

Try filling it is sucking maybe cause it needs filled to work my kubota was filled all the way up when I changed it.

 

[torch1]

A couple of things not mentioned so far is the fact that the majority of hydraulic filters on a hydraulic system, filter on the return as the filters cannot handle full system pressure.
Transmission filters are different as you are not talking about 2000 lbs of pressure.
Most systems will have a screen on the intake to the pump to prevent large pieces from the sump getting to the pump.
Get a schematic of your system so you know what is involved/included within the system, get to know your system, always check the simplest thing first, always, no exceptions.
if you fail anything in your system you will probably contaminate the entire system, this means you disassemble every hose, cylinder, valve in your system, if you do not, you will recontaminate the entire system and have ongoing problems until you clean the entire system.
The reason manufactures install filters upside down is so you can not prefill, does that tell you something, just because oil is new does not mean it’s clean, do not prefill oil or fuel filters as this is bypassing the filter, just like putting dirty oil or fuel in your engine or transmission. Price out an injector for your engine, want to change them because you pre-filled the filter?

 

[ptsg]

A couple of things not mentioned so far is the fact that the majority of hydraulic filters on a hydraulic system, filter on the return as the filters cannot handle full system pressure.
Transmission filters are different as you are not talking about 2000 lbs of pressure.
Most systems will have a screen on the intake to the pump to prevent large pieces from the sump getting to the pump.
Get a schematic of your system so you know what is involved/included within the system, get to know your system, always check the simplest thing first, always, no exceptions.
if you fail anything in your system you will probably contaminate the entire system, this means you disassemble every hose, cylinder, valve in your system, if you do not, you will recontaminate the entire system and have ongoing problems until you clean the entire system.
The reason manufactures install filters upside down is so you can not prefill, does that tell you something, just because oil is new does not mean it’s clean, do not prefill oil or fuel filters as this is bypassing the filter, just like putting dirty oil or fuel in your engine or transmission. Price out an injector for your engine, want to change them because you pre-filled the filter?

Most tractors will have the hydraulic filter at the suction side of the pump. Some choose to still run a screen, others don't.

 

[aircommuter]

I guess it’s too much work to read all the posts before responding!! I thought of temperature too but it was said no a few times. Second guess would be the old gasket was stuck on the housing.

 

[PHIL850]

Wonder if you could use a compressor to put some pressure on the tank to force some fluid to the pump?

I would be fearful of blowing a seal somewhere doing that

 

[Alan46]

OP said all better now, just needed to warm the fluid
,

 

[charlessenf]

OK, and the winner is... JimR! Fluid was just too darn cold. I pulled out a propane heater (that I've never used) and blasted the filter and underside. Started up and zero complaints from the pump. Ran for a bit and shut it down and installed the new filter (no fluid added). Fired up and all was still good. Took a few laps around my driveway, hooked my forks back up and put it away. I have to say that this fluid, now that the pump can actually fetch it(!), feels VERY nice- everything feels so much smoother and quicker. I will see how things are when I go to use it (minimal use this time of the year- mostly relegated to moving around crates of firewood).

For what it's worth, this fluid is supposed to last a lot longer (won't be doing a fluid change for a while- likely send in a sample at 400 hrs; filter changes per schedule, of course).

Again, I cannot state how appreciative I am of everyone here. There are not a lot of forums with a LOT of great and knowledgeable folks.

Jeeze what a saga! I've a Kubota and the filters and hydraulic fluid in the shed - over a year now - waiting to change it out.. One guy told me about the ShopVac 'trick' but, never watching it done up close or even knowing which filters which and getting really stung on a fuel pump R&R (>$700.00) I've really been avoiding the fluid change.

At least I learned not to do it in an unheated shop in the dead of Winter. (BTW: When I built my shop in (relatively mild foothills of NC), I insulated the dickens out of it. I've got several ceiling fans that I run in conjunction with a propane torpedo heater for 15-20 minutes to warm the place up and, once it's sixty, turn it off and it holds for hours. Well worth the investment in time, effort and money.

Then again, if it died in there - what a ***** getting it towed to a dealer!

Thanks to all for sharing your experiences.

 

[K5lwq]

I would be fearful of blowing a seal somewhere doing that

Pretty sure you would not blow a seal doing that. The case is vented and many use that technique to get fluid flowing. But anything is possible I guess.

 

[bluetim0]

Kioti ck22 had same problem
Lost steering too
Go figure jacked up front end and manually worked the steering
Got back full hydraulics
Also engaging the mid pto helped
Looks like an air lock or similar

 

[JKeane]

I've done a fair number of fluid changes and this is the first time I've encountered this. Loader jerks a few inches and that's it. PTO spins, but it doesn't seem very vigorous. Steering isn't happening (no power).

I'd over-filled a bit so I removed fluid to just under full.

Haven't run for more than a couple of minutes (total) for fear of damaging something. All Kioti filters. No issues changing anything. I am using semi-synthetic fluid, spec'd better than Kioti.

How best to work through this?

quick reply here. Did you happen to dial back the hyraulics knob under the seat?