Need hydraulic valve advice

Lynn Patrick

Well-known Member
I have a double spool AICO valve that came on a tractor I used to own. I never used the vale until now. I have it on my 3000 for the front blade. I can raise the blade & swivel it one way but cannot get the blade to swivel back. It will lower by gravity but there is no down pressure.
I will attempt to attach pics. Can anyone tell me where there is an adjustment & do I have the hoses plumbed correctly?
Thanks!
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6485.jpg
 
Lynn Patrick,
I have the same Valve.
The 2 hoses on the Left top can control a 2 way cyl (Pressure in and out). Like a cyl on a haybine or a wheeled disk.
As delivered from the factory, the hose on the Right bottom is for a one way cyl (like a Hydraulic up - gravity down ).
I used that hose on a one armed loader.

I believe you will find a 4th port below the 2 on the left that can make the second valve a 2 way, from memory, I think you had to also do something else to make that happen.
(e.g. remove a allen head plug or turn a screw.)

I looked for my instructions but have not located them yet.
Keith
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Thanks Keith! That is definitely the valve I have. Now to try & jog your memory - there is a threaded "stud" sticking out the back w/a 7/16" nut & what looks like a hex shaped hole in the middle. It's almost impossible to see! Could that be the 1 way/2 way adjustment? Any clue if so which way to adjust?
Thanks to all for the help!
 
Lynn,
I looked thru my papers last night without any luck. :)<<<)

Mine worked as it came from the factory. ( in 1980 I paid $135 for it, LOL!)

I have 2 ports out the back to raise/lower something and the one line to provide power up for the old one arm loader.


That sounds like a restrictor to slow speed of flow.

Is there anything behind that pipe plug at top back?
I thought you took out a plug and removed a hex fitting. It could even be where the other line attaches?? (Left lower fitting)


I know I had trouble and had to get a replacement because the one spool was not machined correctly and an O-Ring & backer kept jumping off.

HTH
Keith
 

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