Bucket empties by itself!

[comfun1]

The bucket on my loader will empty by itself unless I hit the joystick every 10 seconds or so. It has gradually been getting worse. It is a B7100 kubota and I bought it new in '92. Any idea how to tell what is wrong?

 

[Big Bri]

i just had the same thing happen to mine, when i brought it to the dealer ship they told me that a nut that holds the packing in had come loose causing fluid to bypass. I'm sure there are other causes but that was mine. here is a link to what some others told me that it might also be.
good luck.
http://www.tractorbynet.com/forums/hydraulics/174922-bucket-leaks-fast.html

 

[J_J]

Cylinders leaking, or valve leaking. You could switch hoses between the lift and curl and see if the problem switches.

 

[zman007007]

Hey JJ, how is every thing around the Florida area? It"s fine here around the old Clinton area, except very hot and humid. zman:thumbsup:

 

[AKKAMAAN]

Cylinders leaking, or valve leaking. You could switch hoses between the lift and curl and see if the problem switches.

very good start on trouble shooting...:thumbsup:

question:single or two bucket cylinders...

 

[J_J]

very good start on trouble shooting...:thumbsup:

question:single or two bucket cylinders...

Some machines have one curl cyl, but most tractor have two. I have one curl cyl on my Power-Trac.

 

[Egon]

What kind of condition is the Joystick control system in?

 

[J_J]

Hey JJ, how is every thing around the Florida area? It"s fine here around the old Clinton area, except very hot and humid. zman:thumbsup:

I was up in Clinton about two months ago for the Thornwell reunion , and it was hot. About the same here in Jacksonville, with 95 degrees.

Until three years ago, I was working in this kind of heat all day using weed whackers, backpack blowers, etc. Retired now, and with all the drugs they have me taking, I can only tolerate the sun for a couple of hours, and then I call it a day. It's h**l to get old, but someone has to do it. What I don't like about these golden years, is that everyone is taking all my golden dollars.

 

[rutwad]

could just be a split or cracked O-ring in the loader valve.

 

[kennyd]

could just be a split or cracked O-ring in the loader valve.

Generally, there are no o-rings in a spool valve. The sealing is done by very close tolerances between the spool and the bore in the valve body. They are are a lapped/honed fit-that is why you cannot buy a replacement spool.