Bx bucket issues

[Fytrfire]

I suspect fishdrivel is talking about the 3 point hitch is trying to raise dead heading the pump over relief. If I remember correctly some Kubota models used a FEL valves that had series spool on the lift lower. This spool directs flow returning from the lift lower cylinders down stream to facilitate raise and dump simultaneously. If the 3 point is attempting to raise it would limit what you could lift

Yeah I did notice there's two locking nuts on the rod that connects to the three-point hitch lever which is also tied into the mower deck. This lowers and raises the mower deck as well as the three-point hitch. According to my pre repair pics, there is more threads showing on it then before when I took everything apart to replace the HST.

I'm going to adjust those nuts back and see if that makes a difference as well as play with the lever while controlling the bucket. I have a pressure tester coming tomorrow as well to test the hydraulic pressures.

 

[Fytrfire]

I'm talking about the rear cylinder.
A good Kubota mechanic can explain it better than I but
As I understand it, being out of adjustment blocks the relief valve.
Sorry, I can't explain better than that.
It could be very expensive repairs that a call or trip to a Kubota mechanic could easily explain or prevent.

Note: some very good tractor mechanics did not know about this problem. My Kubota mechanic at Kubota Dealer in Opelika knew immediately what the issue was.

Its all good thanks for the reply

 

[Fytrfire]

I just lost my response note, so here is version 2.0, much shorter.

I had a similar problem a year ago where the bucket would only lift to hood height if there was any snowload in it at all, empty it worked fine. Turns out that the hydraulic reservoir plug had spun ever so slightly by the deep heavy snow that was being plowed, causing a slow leak of fluid. Tightened that up, checked all the lines and connections to make sure they were securely fastened, and then all was good.

I have owned my BX23S for 3 yrs, about 260 hours on it, and that is the extent of my beginner / novice tractor operator experience. Others on the forum migiht correct my thoughts as they would be experts and experienced, so my efforts to answer are just mere guesses. Some comments / questions for you to consider ...

1) my issue was discovered at the height of winter, 2-3 ft of snow, constantly plowing through it, with no clearance at times
2) I had not removed, replaced, adjusted, serviced the hydraulic lines or connections when the problem arose (it was still a young tractor)
3) check that the lines and hydraulic connections (for Loader) are all properly secured and tight so that there are no leaks, and therefore that a hydraulic "loop" provides continuous flow
4) check that there is sufficient hydraulic fluid in the reservoir, and that there is a reading on the dipstick cap, check that the plug below is straight and secured
5) keep the RPM running at a suitable level for the task
6) if it is REALLY COLD / DEEP FREEZE conditions the hydraulics will be challenged anyways, on typical days this is not an issue

All The Best

edit - I knew that I forgot something
7) you may need to bleed the hydraulic lines like you would a brake line to get any air bubbles out (not sure). Perhaps running the tractor and going through the function motions would do this.

Thank you for the tips and ideas... I have a pressure tester coming tomorrow so I'm going to check my pressures to confirm that the hydraulic pump is giving me sufficient pressure and then play with the mower deck /3 point Lever to see if that changes anything

 

[civilian]

Thank you for the tips and ideas... I have a pressure tester coming tomorrow so I'm going to check my pressures to confirm that the hydraulic pump is giving me sufficient pressure and then play with the mower deck /3 point Lever to see if that changes anything

Based on comments above about 3pt lift lever in raise position and my own observations, play with the mower deck/3pt lever to make sure it is not trying to raise your mower deck before the pressure check. My BX2230 sticks once in a great while, but dad's BX2230 sticks quite often. And when it sticks, the FEL doesn't move very fast. Speeding up the throttle usually kicks out the 3pt lever when it reaches the up position, the the FEL works correctly. Hope this helps. Jon

 

[Fytrfire]

Based on comments above about 3pt lift lever in raise position and my own observations, play with the mower deck/3pt lever to make sure it is not trying to raise your mower deck before the pressure check. My BX2230 sticks once in a great while, but dad's BX2230 sticks quite often. And when it sticks, the FEL doesn't move very fast. Speeding up the throttle usually kicks out the 3pt lever when it reaches the up position, the the FEL works correctly. Hope this helps. Jon

Ya I'll give that a try! I feel like I should rebuild the dump lever contoller valve as the lever sticks from time to time. I wanna say after my HST repair doesn't seem like I can raise the 3 point Arms up, but tomorrow I'll confirm that.

Seems like you always have to find the sweet spot to get the bucket to raise even without a load.

Appreciate the info Jon!

 

[Fxfymn413]

Not really about your question, but I'm curious about why you had to replace the hydraulic pump?

 

[fishdrivel]

I suspect fishdrivel is talking about the 3 point hitch is trying to raise dead heading the pump over relief. If I remember correctly some Kubota models used a FEL valves that had series spool on the lift lower. This spool directs flow returning from the lift lower cylinders down stream to facilitate raise and dump simultaneously. If the 3 point is attempting to raise it would limit what you could lift

Bingo! Thank you.

 

[Fytrfire]

Not really about your question, but I'm curious about why you had to replace the hydraulic pump?

Mine had a catastrophic failure and literally blew out. If you follow my thread you can look at the other pics of the damage.

 

[fishdrivel]

I suspect fishdrivel is talking about the 3 point hitch is trying to raise dead heading the pump over relief. If I remember correctly some Kubota models used a FEL valves that had series spool on the lift lower. This spool directs flow returning from the lift lower cylinders down stream to facilitate raise and dump simultaneously. If the 3 point is attempting to raise it would limit what you could lift

Is it possible that his catastrophic blow out of the pump is also caused by that deadheading hydraulic pressure?

 

[Fytrfire]

Do you have the hose that would connect to the backhoe plugged into the back of the tractor completing the circuit? Have you cycled all loader functions to their limits multiple times to force all the air out?

I do have the hose that would be connected to the BH connected to the machine, but obviously not connected to the BH since I dont have it attached yet. That would be the only thing I haven't cycled yet. I did play with the 3pt/mover lever and I cant raise the 3 point at all with the lever. I can manually lift it up but thats it. Frustrating as hell.... I will say the machine moves nice and fast noth forward and reverse with no whining or anything now with the new HST. I also went to check the pressure but bought the wrong coupler so tomorrow is another day...any thoughts??