Ya playing with the 3pt lever didnt do squat today...it wouldn't even raise the 3pt. Levers ugh.....
Bx bucket issues
- Thread starter Fytrfire
- Start date
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I read through your thread about replacing the pump and I did not see where you came up with a definitive reason for the pump failure. Did you find out why the pump failed? If not I can't help thinking that it was a symptom of the problem and not the reason which is why you are having continuing hydraulic issues.
Maybe its time to hit the reset button and go back to figure out why the pump failed before spending more on repairs that may not fix the real issue.
Despite what was posted I don't see any way for the pump to have such a catastrophic failure unless very high pressures were developed that caused the case to fail. I did not note any outside damage from striking an object and oil failure, low oil, etc. would most likely show up as wear on the pump with decreasing output, not catastrophic failure.
You know local Kubota techs, so they may be able to seek guidance from Kubota about possible causes and/or other similar cases.
Maybe its time to hit the reset button and go back to figure out why the pump failed before spending more on repairs that may not fix the real issue.
Despite what was posted I don't see any way for the pump to have such a catastrophic failure unless very high pressures were developed that caused the case to fail. I did not note any outside damage from striking an object and oil failure, low oil, etc. would most likely show up as wear on the pump with decreasing output, not catastrophic failure.
You know local Kubota techs, so they may be able to seek guidance from Kubota about possible causes and/or other similar cases.
Henro
Elite Member
- Joined
- Jul 4, 2003
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- 4,971
- Location
- Few miles north of Pgh, PA
- Tractor
- Kubota B2910, BX2200, KX41-2V mini EX
It would seem that the system pressure relief valve should open and prevent catastrophic high pressure. Might be wise to check the PRV and make sure it looks operational. This would require removing it, which seems to be a rather easy thing to do, as some people have reported adding shims to the PRV to increase the system hydraulic pressure.
As FX...413 implied, it would be wise to get a pressure gauge hooked up and check the system pressure to be sure it is within spec.
Edit: Just an afterthought, but are you the original owner? If not, no telling what a previous owner might have done to jack up the system pressure to get more lift from the loader, for example. This would have been done by changing the number of shims on the PRV to increase pressure. Don't recall if they are added or subtracted to change the trip point. Just another possible reason to check system pressure...
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I'm actually on the way out the door right now to get the correct fitting for my Gauge. I'm apparently the 2nd owner, so who knows what potential problems I inherited. The only thing I think that caused that failure was the fact we ran the machine out of hydraulic oil. It didnt crack the HST at that time, but I had to winch the tractor on the trailer and after refilling it and using it for 20 plus hours before failure it whinnied and had a hard time pulling a lil incline ...
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Hey Fx413 thanks for trying to help me out!
I'm apparently the 2nd owner, so who knows what potential problems I inherited. The only thing I think that caused that failure was the fact we ran the machine completely out of hydraulic oil. Spung a leak on a hose yet continued to use the mower
It didnt crack the HST at that time but I had to winch the tractor on the trailer and after refilling it and using it for 20 hours before failure it whinnied and had a hard time pulling a lil incline ...
Maybe its possible at the time of failure it messed up something internally with the 3 pt?
aybe
fishdrivel
Gold Member
If your 3 point can be lifted by hand and won't lift hydraulically, that concerns me.Hey Fx413 thanks for trying to help me out!
I'm apparently the 2nd owner, so who knows what potential problems I inherited. The only thing I think that caused that failure was the fact we ran the machine completely out of hydraulic oil. Spung a leak on a hose yet continued to use the mower
It didnt crack the HST at that time but I had to winch the tractor on the trailer and after refilling it and using it for 20 hours before failure it whinnied and had a hard time pulling a lil incline ...
Maybe its possible at the time of failure it messed up something internally with the 3 pt?
aybe
Back to my original warning, it is possible you damaged the cylinder. Look under the seat at the cylinder case. Do you see any cracks?
I would be very concerned that your repairs are not finding the cause.
You ran it out of hydraulic fluid? Where di that much fluid go?
That tractor hold a lot of fliud and you would have to dump most of it before the HST would quit working.
oldnslo
Super Member
doubtful since the failure was in the hydrostatic pump and not the implement circuit. implement pump and related components I suspect would fail from excessive pressure before the HST pump would.
oldnslo
Super Member
Implement - 3 point should be totally independent of the HST with exception of implement pump also supplies steering and charge flow to the HST. Agree failure appears to be fatigue or high pressure or possibly combination of both. Example: since back hoe could this have been used hard doing lower work on good footing where one could reach HST drive relief pressures pushing into a pile and eventually causing a fatigue failure, especially if previous owner jacked up the pressure for a little more push power. Normal failure on relief valve is stuck open so doubt a relief failure.
fytrfire,
wishing you the best on finding the source of this problem.
fytrfire,
wishing you the best on finding the source of this problem.
zoltanthegypsy
Gold Member
Following up on question asked earlier - apologies if I missed the answer, or it was too obvious...
@ the OP: you said you "have the hose" referring to the hoses that will connect to the BH. But do you have them connected to bypass the Bh? Two connect to each other, and the other plugs into a connector on the tractor.
Just double-checking... and good luck.
[edit to add] Sorry, I lost track of which BX it was. Not the same as my '24 but the question stands - unless it doesn't apply to a '22. Shouldn't the hoses be re-routed (to other hose or connector) when not connected to the BH to provide a loop for return flow?
Z.
@ the OP: you said you "have the hose" referring to the hoses that will connect to the BH. But do you have them connected to bypass the Bh? Two connect to each other, and the other plugs into a connector on the tractor.
Just double-checking... and good luck.
[edit to add] Sorry, I lost track of which BX it was. Not the same as my '24 but the question stands - unless it doesn't apply to a '22. Shouldn't the hoses be re-routed (to other hose or connector) when not connected to the BH to provide a loop for return flow?
Z.
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Well all of the fluid went on the grass that we were cutting...
We probably ran it for close to 2 hours after we noticed a pretty significant leak... I am messing with the tractor now and I did not notice any cracks.
One question I have is this hose that goes to my backhoe I believe runs to the pressure relief valve not 100% on that... but does that not need to be in a closed loop? In other words I have the backhoe off right now would it hurt to connect that coupling to the mail and as circled in the picture?? It seems to me that the one and with a coupling could stay like it is because nothing's going to leak out but with the other male and open like that it seems like either fluid would be gushing out if that was on any kind of pressure side or it will be sucking air in??
Two out of the three quick coupling connections up by the bucket that come off the side of the engine I have pressure tested and I am getting nothing but yet there is some movement on operating the bucket ...