1969 Case 580CK W/ 33 Backhoe

[MichiganHobbyFarmer]

Just acquired a new (to me) 580CK with 188 Diesel. It's completely missing the relief valve on the swing cylinder. I cannot seem to source this anywhere. Case no longer supplies it, can't find it on any of the sites that return when I google it. What are my options at this point? Right now I'm at trying to replace the seals so it's airtight, and taking the housing off and taking it to Parkers to see if they can retro fit it, and set the relief at the proper PSI which from what I can tell should be 3900 +- 200 PSI.

Any advice anyone can give would be greatly appreciated. Seems like I'm at a dead end if Parker can't help me.

 

[BukitCase]

Welcome to TBN -
Not sure where you found that pressure rating, but operating pressure on the CK AND my 580B is 2200 psi

TractorData.com J.I. Case 580 CK Construction King industrial tractor information

www.tractordata.com

Scroll down that page to hydraulics.

On my 580B, most of the hoe controls have adaptors from NPT to JIC in various sizes - but I've never had the individual SECTIONS apart, you may be in trouble finding something that'll replace your missing pieces... Steve