kubota BT1100, no back hoe swing action, all else is good Just did a full service and replaced leaking hydraulic hose from lower front (outlet) of loader valve down to control valve by frame (shuts off flow to loader - checkes all pressure relief valves they are clean I have pressure right up to the mid inlet no pressure in that hose or the next valva - the swing valve swing valve I cannot find anything about this wierd occurance, has any one out there ever came accros this before thanks randy Carroll co. tractor
no kubota bt1100 swing on back hoe
- Thread starter Janestwo2
- Start date
Since that model has a separate swing pump, I'd suspect one of the couplers on that hose, loose or bad coupling.
Good sleuthing, I had forgotten about this. Poster hasn't been seen since shortly after this, so you're unlikely to get a response.
Don't be this guy!
I’m at my wits end with the exact same issue. This issue is apparently unheard of and nobody has any information posted as to what could possibly be the cause or fix. So yes, I am going to grasp at any straw I can find. Not sure what this is harming.
Do like @TheOldHokie said in your other post. Put everything back together as it was, then follow his systematic instructions exactly, no more no less. His first instruction was to remove the hose from the swing pump at the mid inlet and stick it in a catch bucket. Start the tractor (I suggest idle) and verify flow with the diverter valve in one position and no flow with it in the other position. Post your results and await further instruction.
Thanks for the plug but I think we are past that point now.
Based on the OP's latest description I am starting to suspect something related to operation of the mid-inlet is missing or misplaced in the valve. What do you have in the way of documentation for the Husco valves? A catalog description of the mid-inlet might help.
EDIT- never mind - I see you slready posted mid-inlet documentation. Thats not at all what I expected operationally. It appears the '"swing" pump actually feeds everything but there are two options. Can you tell me if all hoe functions work with the swing pump switched off and the implement pump switched on?
Dan
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I had the same thought about the mid inlet, possibly being reversed, flipped over. But each section has a flat face and an o-ring groove on the other face, so sealing wouldn't work.
You know, what might be worth having OP do. Disconnect both work hoses at the valve and put them in the bucket. Try to swing the boom by hand. Does it swing and fluid come out one hose to the right and the other hose to the left? When I was overhauling my BT900, I had to do some head scratching on those cylinder hoses. What I first thought was a tee screwed into a cylinder port turned out to be just clamped tight against the cylinder. It can be confusing.
Also, if OP has some extra hoses he could try routing open hoses from the valve work ports to the bucket and check for flow.
I know some of this might have been tried, but I can't follow it. Somebody before OP has been into this thing, so who knows what they did?
Do you want to go back to OPs current thread?
I think you may be mis-reading the Husco (or I am) diagram. The mid inlet feeds the downstream section, swing, and acts as the turnaround (Husco's term) for the upstream sections and ties the low pressure passages together.You know, what might be worth having OP do. Disconnect both work hoses at the valve and put them in the bucket. Try to swing the boom by hand. Does it swing and fluid come out one hose to the right and the other hose to the left? When I was overhauling my BT900, I had to do some head scratching on those cylinder hoses. What I first thought was a tee screwed into a cylinder port turned out to be just clamped tight against the cylinder. It can be confusing.
Also, if OP has some extra hoses he could try routing open hoses from the valve work ports to the bucket and check for flow.
I know some of this might have been tried, but I can't follow it. Somebody before OP has been into this thing, so who knows what they did?
Do you want to go back to OPs current thread?
You know these vakves far better than me but the description says its purpose is to introduce a new input stream. It can be used as a "combiner " or an "isolater" .I had the same thought about the mid inlet, possibly being reversed, flipped over. But each section has a flat face and an o-ring groove on the other face, so sealing wouldn't work.
I think you may be mis-reading the Husco (or I am) diagram. The mid inlet feeds the downstream section, swing, and acts as the turnaround (Husco's term) for the upstream sections and ties the low pressure passages together.
You know, what might be worth having OP do. Disconnect both work hoses at the valve and put them in the bucket. Try to swing the boom by hand. Does it swing and fluid come out one hose to the right and the other hose to the left? When I was overhauling my BT900, I had to do some head scratching on those cylinder hoses. What I first thought was a tee screwed into a cylinder port turned out to be just clamped tight against the cylinder. It can be confusing.
Also, if OP has some extra hoses he could try routing open hoses from the valve work ports to the bucket and check for flow.
I know some of this might have been tried, but I can't follow it. Somebody before OP has been into this thing, so who knows what they did?
Do you want to go back to OPs current thread?
The left side of the schematic shows the midinlet terminating the upstream pump flow by directung neutral to tank (low pressure core). Thats basically what an end section does so I suppose that could be called a turnaround.
The right side shows the establishment of a new independent neutral and parallel core with an optional inlet pressure relief. I would call that an isolater. The upstream low pressure core (and hence the neutral) is continued to down stream sections and a common tank outlet.
Position in the stack determines which sections are powered by the mid-inlet. Looking at the parts diagrams it looks like everything but the outrigger section is downstream of the mid-inlet.
All very intellectually interesting but I think the plumbing of the swing cylinders needs a good hard look. We can continue the intellectual discussion offline.
Dan
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