Hydraulic question

NickMartin · Post by **NickMartin** » Tue May 26, 2015 1:47 pm

Ok, so I've been working on getting my 9300 backhoe ready to go. Mounted it to the 350 this weekend and found an issue with the hydraulics. One outrigger works perfectly up and down. The other valve works great in one direction and not the other. The outrigger lines are on quick connects, so I swap them and the cylinder will power in the other direction. It seems that the relief side of the valve is not working right. The valve stem seems to be traveling full distance, but it does "whistle" in the direction not operating right.
I was thinking about connecting a line from one side directly to the other and maybe try to flush it.
Any thoughts if this is a good idea or not?

pop pop · Post by **pop pop** » Fri Jun 12, 2015 2:10 am

i think that is a bad idea.
when the machine is off and all pressure is neutral, take the valve apart and check for problems.

Post by **Lavoy** » Fri Jun 12, 2015 8:05 am

Make sure it is not a problem in the quick disconnects first, I have had it happen.
Lavoy

Jack-the-Ripper · Post by **Jack-the-Ripper** » Sat Sep 05, 2015 10:41 am

I've disassembled the relevant control valve and found broken pieces of cylinder seals or o-rings wedged in the valve.

pop pop · Post by **pop pop** » Sat Sep 05, 2015 11:06 pm

go to the next valve and check to see what condition its in.
might be the best to go thru it all now. wouldnt want a valve to get "sticky" and cause a problem or accident.

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