B26 Repairs

[skyhook]

Does not go down when I reverse. Cylinders are under pressure so no way it is floating.

Then you do have a problem, most probably in the spool detents but I'm by no means an expert when it comes to hydraulics.

 

[downsizingnow48]

Not familiar with B26 details. But, there might be an external adjustment for the float detent, and there might be external crud affecting valve operation that can be cleaned out. Maybe this thread will be useful. I would go look at my B21 but it is 4 hours away.

Bucket float position - OrangeTractorTalks - Everything Kubota

 

[JsJs]

Not familiar with B26 details. But, there might be an external adjustment for the float detent, and there might be external crud affecting valve operation that can be cleaned out. Maybe this thread will be useful. I would go look at my B21 but it is 4 hours away.

Bucket float position - OrangeTractorTalks - Everything Kubota

Thanks for that, but nothing helpful on that site. Hey does anyone have access to a service manual for the loader controls ?

 

[dfkrug]

I don't have a B26, nor have I ever driven one but I can't believe it operates any different than any other loader I have operated.

One difference the B26 FEL has that most other FELs do not, is a self-leveling bkt. My B21 had that,
and I think it carries over to the B26. On the B21, it was a mechanical system, which I disconnected.
I have never operated a B26, but it may have the same system.

Also, there are mechanical and hydraulic self-leveling systems out there.

JsJs may want look into whether or not the SL-bkt is working correctly. I have never had or seen
any adjustments for the float function on an FEL valve. I am also puzzled by his symptoms.

 

[JsJs]

One difference the B26 FEL has that most other FELs do not, is a self-leveling bkt. My B21 had that,
and I think it carries over to the B26. On the B21, it was a mechanical system, which I disconnected.
I have never operated a B26, but it may have the same system.

Also, there are mechanical and hydraulic self-leveling systems out there.

JsJs may want look into whether or not the SL-bkt is working correctly. I have never had or seen
any adjustments for the float function on an FEL valve. I am also puzzled by his symptoms.

Yes it does have self leveling and that is often another frustration. I know its a saftey feature built for those that don't understand gravity but there should be a temporary override. I have had many an event cursing that feature. I don't see how it creates the down pressure problem but anything is possible. Any one with schematics for the hydraulic system ?

 

[skyhook]

If you follow the self leveling rod on the right side of the loader arms,,
near the end of the loader support frame, you'll see a cable operated valve that controls the self leveling,
disconnect it and you will no longer have self leveling.

 

[troutsqueezer]

FWIW, my B21 works as it should in float mode. Looking at the FEL hydraulic diagrams for mine, I'd say there is a valve problem.

 

[JsJs]

FWIW, my B21 works as it should in float mode. Looking at the FEL hydraulic diagrams for mine, I'd say there is a valve problem.

Can you scan and post those diagrams ?

 

[JsJs]

Hey now thats an idea. It will prove if that apparatus is the float culprit , if so, then its a matter or getting rid of it for good.

 

[troutsqueezer]

Can you scan and post those diagrams ?

Negative. Currently don't own an operating scanner. Sorry. They aren't easy to decipher anyway. From the written description of which valves are open when in float mode, it's apparent the fluid flows freely in all directions, thus no lockup.