Backhoe B26 hydralics bypassing

[woody]

I carried my B26 to the dealer today and had a long talk with him. I cannot be there tomorrow I hate it when work gets in my way, but I did talk with the shop manager for a while. he told me today that they set it at 2440 the last time they worked on it then I told him I checked it and could only get 2200 that he needs to check his gauge or I do one. now that he knows that I knows then maybe it will be fixed.

 

[wdchyd]

I carried my B26 to the dealer today and had a long talk with him. I cannot be there tomorrow I hate it when work gets in my way, but I did talk with the shop manager for a while. he told me today that they set it at 2440 the last time they worked on it then I told him I checked it and could only get 2200 that he needs to check his gauge or I do one. now that he knows that I knows then maybe it will be fixed.

Woody,

Did the dealer say he could do a Flow/Load test on the system?....It'll show flow efficiency at rated pressure.....very important......

Don't forget it takes pressure AND flow......if they are a good dealer then they'll do it......

 

[woody]

Woody,

Did the dealer say he could do a Flow/Load test on the system?....It'll show flow efficiency at rated pressure.....very important......

Don't forget it takes pressure AND flow......if they are a good dealer then they'll do it......

I would hope since the rep knew about this problem in advance he prepared for it, but I did find it funny that the service manager could not tell me the pressures before but now he knows. :confused2:

 

[Skyco]

When you reach out with the backhoe and try to get some dirt it does not dig, does not move the machine, and does not pull the motor down.

Good advice given to you in this thread....re: your statement above I don't think you'll ever see the motor pull down- I know my BX24 doesn't even grunt when digging at recommended RPM, even with a stalled backhoe digger.
Regarding the two readings, yours and the dealers, differing- wouldn't surprise me if low cost gauges are 3% or worse accuracy...so the two of ya'll could differ by several hundred lbs and neither is "wrong".

 

[woody]

Good advice given to you in this thread....re: your statement above I don't think you'll ever see the motor pull down- I know my BX24 doesn't even grunt when digging at recommended RPM, even with a stalled backhoe digger.
Regarding the two readings, yours and the dealers, differing- wouldn't surprise me if low cost gauges are 3% or worse accuracy...so the two of ya'll could differ by several hundred lbs and neither is "wrong".

skyco you made a good point on the gauge being off and I did think of that. I have decided that I am going to fix me up a two gauge tester that way I can compare the readings with out disconnecting it from the tractor.
thanks for your input.

 

[woody]

Well, the Kubota rep. did not show up the dealer has had my B26 since Tuesday and I still don't know what to do. So far I have not had a good experience with Kubota.

 

[woody]

First of all, thanks for letting me vent my problems. now I called the service man today and he said the Kubota rep came down this morning and look at my B26 for about an hour and has declared it done he said it is doing all it will do. When I asked him what he did to it he said absolutely nothing. He checked the pressures and then went out and ran it. The pressure is now reading 2360psi, ok I checked it a week ago and I got 2200psi and the last time it was in the shop they said it was 2440psi sounds funny to me. I will go in the morning and pick it up I hope it is mysteriously fixed. :confused2:

 

[J_J]

You might ask them to leave the gage in the system and show you the results. You might take your gage in and compare the two gages. If you install a permanent gage, you can monitor the pressure at any time.

 

[dfkrug]

If you install a permanent gage, you can monitor the pressure at any time.

That's a good idea, if you can find a convenient location. That is where you
would want to tee into the In or PB_Out on one of the valves. Sometimes
there is a plug on the valve body itself for a guage connection. I
permanently mounted a guage on my CADDigger hoe valve, and it was useful.

I do not have a B26, but my B21 had RVs on the main gearbox, the FEL
valve, the hoe valve, the OEM AUX valve, and the 4-in-1 valve. Whatever
was set lowest determined the effective hyd system pressure. That's a
lot of RVs to set if you wanted to raise the pressure....mine was between
2000 and 2100psi.

I have seen it written that the B26 also has a separate hyd pump for the
hoe swing circuit. That would be an independent system with its own
RV, even if it sucks from and dumps to the same reservoir.

 

[dfkrug]

you can disconnect any hose from BH controls going to a cyl providing it's not one with a work port relief (that pressure will show up lower)......

Lower? I am not saying it is not possible to have a work port RV set lower
than the system pressure, but all the hoe work port RVs I have seen are
set considerably higher than the system RVs. I often see 3000psi settings
in these "shock-relief" valves.