B8200 hydraulic valve problem.

[Rob]

Hi all, i am having a small technical issue with my B8200 hydraulic direction valve.
The directional flow valve part of the block is not working as it should at present, and to be honest the problem has only appeared since i have added an extra spool valve for my logsplitter, hyd top link ram and tipping trailer.
It is possible the valve has been on the blink for some time probably previous owner as i have not had any need to start diverting fluid until now.

normally it would be moved either clock wise or anti clock depending on what function is being used, when i wind it eitherway it just goes round and wont stop, and at the same time the 3pt lift starts working erratically or the new spool doent get a full flow from the block.

Having not disasembled one of the valve blocks, i assume the problem is within the directional valve section.
any suggestions on what part has failed and is it possible to remove the screw valve section for parts replacement if something has worn or is blocked.
I dont want to jump in and start disasemling without a bit of prior info really.

any help would be brilliant guys.
pic of the block in question.
rgds
rob

 

[Eric McCarthy]

This kinda got lost in the shuffel so I'm trying to bump it back up for you, in hopes someone sees it and can help.

 

[North Idaho Wolfman]

This problem has come up before.
The selector valve has a set of roll pins and if one is seared then it will act strange and not stop at the right time.
Here is a schematic of what your dealing with.