Loader bx24

[bamaKen]

bx24 loader won't raise the front of the tractor.
and if it does it leaks back down very quickly

 

[loggin]

bx24 loader won't raise the front of the tractor.
and if it does it leaks back down very quickly

If there are no external leaks and leak down is fairly quick then it is usually a sign that the control valve/spool is leaking hydraulic fluid from the cylinder back to the reservoir. The issue of not being able to lift the tractor may have to do with pressure and a pressure relief valve may need cleaning, adjusting or replacing. Having air in the fluid could also cause the issues you are having.

Have you checked hydraulic fluid level? Changed fluid and filters on a regular basis? Is there a separate screen that needs cleaning? Checked fluid condition after operating for a while?

 

[TractorTech]

It could be the valve, but more specifically the detent on the back of the spool. Did this just happen or has this been going on for awhile?

One of the lift cylinders could be leaking by and I suspect a more likely problem. With the bucket flat on the ground, curl the bucket as you would dump it. It sould raise the tractor. If it raises, does it still leak down?

Likewise, load the bucket with dirt and raise the loader. Does the loader leak down?

 

[bamaKen]

thanks guys for the quick answers. So i will try and answer each question.
just brought the tractor. and yes the hydraulic fluid was low.
hour meter is not readable.
no history at all got it from a auction house.
assumed the weak loader was due to be low on fluid.
added some universal udt fluid from tractor supply
run and drive it around. extend and retract all cylinders.
the fluid has some bubbles in it. which i assume is air?
the dipper cylinder has some seepage not real bad.
but the back is very strong.
i hear little whine slight hum. is this normal?

"pressure and a pressure relief valve may need cleaning, adjusting or replacing"
where is it at?

"Having air in the fluid could also cause the issues you are having".
how do i bleed it or remove the air?

"It could be the valve, but more specifically the detent on the back of the spool. Did this just happen or has this been going on for awhile?".
i bought it last saturday in its current condition.

"With the bucket flat on the ground, curl the bucket as you would dump it. It sould raise the tractor. If it raises, does it still leak down?".
it raises very little but it raises it by pulling (extending) the boom cylinders out and as soon as i lever is released it goes back down with in 1-2 seconds.

"Likewise, load the bucket with dirt and raise the loader. Does the loader leak down?"
been raining since i got it but i tried to lift my tiller and it will lift but not good and yes it leaks back down but not as fast.

Thanks again for the help. my wife will kill me if i bought a POC

 

[sea2summit]

no history at all got it from a auction house.

Oooof.

How many hours? Fluid levels are correct? It's all hydro driven off the same pump, it drives and operates fine other than the loader? That would be a good sign that you probably don't have a POS.

 

[bamaKen]

thanks for the vote of confidence on NO POS.
i extended all the cylinders. and checked the fluid and it is about half way up the hatch marks on the stick.

"How many hours?"
i wish i knew. hour meter is not readable

" Fluid levels are correct?"
yes i believe so

would a video of it help?
the bucket cylinder seems to work better that the boom cylinders.
so i was wondering if the float detent value might be leaking?
i assume that the float value only effects the boom cylinders not the bucket cylinder?
but i cant seem to find anything about that.
i seem to able to find book on the bx23s but not on the bx24(d)
thanks Ken

 

[ruffdog]

Hour meter doesn't work? Is this a flood victim? Water in the oil? Who knows how much is wrong at this point. Has all the fluids and filters been changed?

 

[rScotty]

thanks for the vote of confidence on NO POS.
i extended all the cylinders. and checked the fluid and it is about half way up the hatch marks on the stick.

"How many hours?"
i wish i knew. hour meter is not readable

" Fluid levels are correct?"
yes i believe so

would a video of it help?
the bucket cylinder seems to work better that the boom cylinders.
so i was wondering if the float detent value might be leaking?
i assume that the float value only effects the boom cylinders not the bucket cylinder?
but i cant seem to find anything about that.
i seem to able to find book on the bx23s but not on the bx24(d)
thanks Ken

Sure, a video would help a lot.
Make sure the fluid is clear, not milky
Air in the fluid is rare, but in the BX24 it may be a good clue. Usually air goes away by itself when you run it a bit. If not, it usually comes via a suction side leak between sump and inlet to the hydraulic pump. That includes the rubber line that is known to cause problems on your model tractor. I believe Kubota sells an upgraded suction line. Check that line.
I doubt it is internal leakage in the boom cylinders. Internal leakage is almost never the problem. In fact, internal bypass leakage cannot make the cylinder and rod pair shorten.
Many tractors will not lift the front much by simply laying the bucket flat and using bucket pressure; they need boom down pressure.
I have no idea what is meant by a float detent valve leaking.
rScotty

 

[bamaKen]

Dang ruffdog. i know your name has ruff in it, but don't be so ruff .
No i think those hour meters are notorious for going bad on the bx24.
no water in the oil.
not a flood victim as far as i know.
have not changed any fluids yet.

 

[bamaKen]

Sure, a video would help a lot.
Make sure the fluid is clear, not milky
Air in the fluid is rare, but in the BX24 it may be a good clue. Usually air goes away by itself when you run it a bit. If not, it usually comes via a suction side leak between sump and inlet to the hydraulic pump. That includes the rubber line that is known to cause problems on your model tractor. I believe Kubota sells an upgraded suction line. Check that line.
I doubt it is internal leakage in the boom cylinders. Internal leakage is almost never the problem. In fact, internal bypass leakage cannot make the cylinder and rod pair shorten.
Many tractors will not lift the front much by simply laying the bucket flat and using bucket pressure; they need boom down pressure.
I have no idea what is meant by a float detent valve leaking.
rScotty

the oil is not milky
the backhoe is strong.

"Usually air goes away by itself when you run it a bit" how long is a bit ?
i put hydraulic oil into the rear end. i guess i was thinking that the pump was in the rear end and would not have a hose form the sump to the pump.
but this is when i get into trouble when i start thinking LOL.

i may have to contact the Stealer on it i guess. and yes i spelled it right.
i see all kind of pic of the bx24 with all four wheels off the ground by a foot or better.
so i think it should be able to do it.
i will send a video at lunch
if will quit raining
ken

​

 

[TractorTech]

Sure, a video would help a lot.
Make sure the fluid is clear, not milky
Air in the fluid is rare, but in the BX24 it may be a good clue. Usually air goes away by itself when you run it a bit. If not, it usually comes via a suction side leak between sump and inlet to the hydraulic pump. That includes the rubber line that is known to cause problems on your model tractor. I believe Kubota sells an upgraded suction line. Check that line.
I doubt it is internal leakage in the boom cylinders. Internal leakage is almost never the problem. In fact, internal bypass leakage cannot make the cylinder and rod pair shorten.
Many tractors will not lift the front much by simply laying the bucket flat and using bucket pressure; they need boom down pressure.
I have no idea what is meant by a float detent valve leaking.
rScotty

The float detent is in the cap at the end of the loader spool. If there is rust in the cap or the detent assembly is falling apart, it will not allow the spool to center to neutral.

As far as lifting the front with the bucket, the bucket has the most leverage and can lift the front when the loader boom/lift cylinders won't. It helps to have the backhoe off the ground so you aren't fitting it. However, if there is leakage in the lift system, the bucket will lift the front while the loader leaks down, as you have seen.

Lifting your tiller and the loader leaking down shows it is isolated to the lift circuit, so milky oil or low level is not the problem.

Does the valve for the loader snap back to center when you let go of it?

Try lifting your tiller again and pull the lever slightly back off of center to see if it will hold the load without moving the valve lever to where it is actually pressurizing the circuit.

 

[Eagle1]

Bucket on my BX will not lift the tractor unless you are full throttle (maybe) the boom with the bucket down will pop it up at idle. Single bucket cylinder dual boom.

 

[TractorTech]

Bucket on my BX will not lift the tractor unless you are full throttle (maybe) the boom with the bucket down will pop it up at idle. Single bucket cylinder dual boom.

Okay, good point. I'm used to larger tractors with dual bucket cylinders, but, as you said the loader pops it up. I have noticed that the BX series I have come across don't do much hydraulically unless at least half throttle. It is necessary to run at or close to full throttle to give you an operating pressure.
This case, the bucket will lift it and the loader tries, but the loader leaks down.

 

[bamaKen]

update on this.
i had to rebuild both cylinders of the FEL boom and it fixed the problem.
and i have had to pretty much rebuild every cylinder on it.
fel and back hoe but she is a strong little tractor now

 

[dougtrr2]

Thanks for the update. Funny how time gets away from a guy, problem starts in Feb, but final answer isn't till December.

Doug in SW IA

 

[bamaKen]

yea problem is i had knee surgery and shoulder surgery since then.
so i have been down a while

thanks Ken