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Case 580c stablizer control valve.

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D.Manuel

New Member
Recently picked up 580c backhoe. Trying to fix a hydraulic leak. Seems I traced it to the stablizer control valve. Was looking for online support on how to overhaul with no luck. Was also looking for a repair kit also with no like. Any input on this ?
 

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Vetech63

Vetech63

Senior Member
Every fitting and valve will have orings on them. Replace each one.....you should be able to get orings matched up locally. The spools will have orings just inside the internal bore so the spools will have to be removed. Make sure you mark each spool, so you get it installed in its correct bore and direction.
 
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stinky64

Senior Member
Can probably source o-rings from Napa or someplace that has Parker parts. When I rebuilt mine used random Parker kits used to reseal spool valves on feed trucks where I worked. May still have spare kit in shop, check when I wander down to the shop later, get the #.
 
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stinky64

Senior Member
Had no luck finding Parker pack, take valve off for sure, easier to inspect and get stuff clean when doing rebuild. IMO.
 
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Leakguy

New Member
I just did some of them last fall for the same reason, leaks. The swing cylinders will be in the way if you don't swing it out of the way, depending on which side your working on. The o- ring part numbers are in the service manual. Some of them cross reference to New Holland numbers some are Case. Not to hard to do really.
 
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