FEL how long 'should' bucked remain up when parked?

[k0ua]

So now things have calmed down the original question stands: if you put your bucket 5' in the air how long should it take, normally, before it would contact the ground? (Mainly ->) What is an acceptable bleed down rate? Do tractor manufactures have a spec for this somewhere and (this ->) when would warranty repair become an issue for it bleeding down too quickly?

My CK35 would stay up a long time..
My NX drops the rate of ~16" a day.
Not that it's a problem but it was noticeable. I didn't know what was acceptable which is the reason I asked my dealer and he immediately offered to look at it and asked me to measure and get back to him and haven't as yet. ...so I asked here. Still don't know but I did learn some old dogs can learn new tricks...some can't.

I don't know of any spec's. And just because I don't know about doesn't mean that it doesn't exist somewhere. BUT I can tell you this, My DK drops about like your NX with nothing in the bucket.

 

[Creamer]

And this is why I love this site! thank you guys for an enjoyable read!

 

[4570Man]

And this is why I love this site! thank you guys for an enjoyable read!

Some guys get butt hurt when things go off topic. I personally think it would be a much more boring site and every thread limited to a few replies if it stayed on topic. Most of the threads that go way off topic have already been fulfilled on the original topic anyway.

 

[LD1]

I never said, or implied, that, or anything of the sort.

I stated the reason why I believed it was possible for them to drift down.

Maybe you didn't mean to imply anything, but that's the way it read.

I have never seen a post on here, where a member claims that their loader drifts, but only after they manually extend the cylinder. But there are plenty of threads about loaders drifting down once raised under hydraulic power.

So you make a statement, about a cylinder being able to drift down, (only if manually extended) which is in no way what the op is experiencing, then conveniently forget to mention that it can only happen if the cylinder is manually pulled out.

So now things have calmed down the original question stands: if you put your bucket 5' in the air how long should it take, normally, before it would contact the ground? (Mainly ->) What is an acceptable bleed down rate? Do tractor manufactures have a spec for this somewhere and (this ->) when would warranty repair become an issue for it bleeding down too quickly?

My CK35 would stay up a long time..
My NX drops the rate of ~16" a day.
Not that it's a problem but it was noticeable. I didn't know what was acceptable which is the reason I asked my dealer and he immediately offered to look at it and asked me to measure and get back to him and haven't as yet. ...so I asked here. Still don't know but I did learn some ol dogs can learn new tricks...some can't.

I have never seen a spec from a tractor mfg. But that don't mean they don't exist somewhere in a service manual.

However, almost all valves that I have seen literature on, list what they call a "acceptable spool leakage rate"

And that spec, requires a bit of math to be meaningful. The spec is usually listed something like 0.15 cc per hour @ 1000psi.

Meaning that with a load in the loader, inducing 1000 psi on the system, it will allow 0.15 cc's of fluid to leak by the valve. You must then do the math, see how much that volume of fluid relates to cylinder travel. Larger diameter cylinders....will move less with a given volume of fluid than smaller cylinders. As will a heavier load (inducing a higher pressure) will cause a faster drift.

All in all, I'd consider 8"-12" per hour to be excessive, and borderline causing operational issues. Less than that....while annoying to know that a fully raised loader will be on the ground by morning, don't really cause any operational issues.

 

[4570Man]

I can manually extended the loader cylinders ( put it in float and lift the arms with the bucket curl ). It leaks back most of the way down instantly because it pulled air in the cylinder.

 

[Highgear]

4570Man - Something doesn't sound right - pulled air in the cylinder . What ?

 

[ovrszd]

If the "tank" line connects to the tank above the fluid level and the valve is in float and you extend the cylinder it will suck air into the system.

 

[RNeumann]

I can manually extended the loader cylinders ( put it in float and lift the arms with the bucket curl ). It leaks back most of the way down instantly because it pulled air in the cylinder.

Round 2- here we go......

 

[murphy1244]

Round 2- here we go......

Must be at least in the 10th round...today the bucket is almost on the ground.:stirthepot:

 

[k0ua]

Must be at least in the 10th round...today the bucket is almost on the ground.:stirthepot:

I wonder what hot or cold temperatures would do to the drop rate. It would seem to me that the bucket would drop faster in hot weather with thinner fluid and slower in cold weather with thicker fluid.