bucket lifting problems

[RogueFishr]

I have a Kioti CK30, with a problem that is getting progressively worse. When I pull back on the stick, to raise the bucket with a load in it, it lowers. If I pull back more, it will finally reverse and raise the bucket. If I stop, the bucket will slowly lower itself. If I try to raise it again, it will drop rapidly until i pull the stick back far enough. Is this something in the control valve? Or is it a pump problem? It worked fine, until this summer, and has been getting progressively worse. I am trying to save some money by figuring out what this is and replacing / repairing it myself.

Thanks for any help.

RF

 

[AKKAMAAN]

I have a Kioti CK30, with a problem that is getting progressively worse. When I pull back on the stick, to raise the bucket with a load in it, it lowers. If I pull back more, it will finally reverse and raise the bucket. If I stop, the bucket will slowly lower itself. If I try to raise it again, it will drop rapidly until i pull the stick back far enough. Is this something in the control valve? Or is it a pump problem? It worked fine, until this summer, and has been getting progressively worse. I am trying to save some money by figuring out what this is and replacing / repairing it myself.

Thanks for any help.

RF

Your control valve need a check valve in "parallell gallery"....or maybe better said that you need a new control valve that have this check valve!!

see red circle on my picture of a basic hydraulic system

 

[RogueFishr]

Your control valve need a check valve in "parallell gallery"....or maybe better said that you need a new control valve that have this check valve!!

Thanks for the reply. I will look into getting a new check valve. I may take mine apart (once I know I can get a new one), and see how it works.

Thanks again,
RF

 

[dshreuas]

OK, cool!^_^ I just wanted to make sure I didn't do anything wrong :]

Nice! I'll start saving up some scratch for this

 

[AKKAMAAN]

Thanks for the reply. I will look into getting a new check valve. I may take mine apart (once I know I can get a new one), and see how it works.

Thanks again,
RF

If there is a check valve in your controlvalve....not all control valves come with these check valves....this check valve will secure the load from dropping from gravity, when operating the control valve....for example a log splitter valve don't need this checkvalve because there is no load pressure from gravity, that tries to push flow backwards....
I don't know if your bucket function ever have been normal. If so there is a check valve in your control valve, and it is possible it have jammed in open position...
Can you send pictures of your control valve....these check valves are usually located under a plug between the ports.....

 

[J_J]

I believe that just about all valves designed for loader work have internal check valves to keep the load from dropping when shifting the spools.

 

[AKKAMAAN]

Loader valve with load check valves

splitter valve, No load check valve

If a splitter valve is used on a loader, it will act like posted.....