Does anyone have a link for a parts manual for the backhoe controls on a 1973 Case 580B.
CASE Construction | 580B - Case Construction King Tractor W/shuttle Transmission | MyCNHi US Store www.mycnhistore.com
I only see the view for the Tractor and not the backhoe controls. Thanks
OOPS ! #35 backhoe specific to a 580B. You gotta figure out if you have the Commercial Valve or the Case-Cessna. https://www.mycnhistore.com/us/en/c...ies-b/cn/2DCE6496-EFBE-E111-9FCE-005056875BD6
I have the Commercial Valve
Scroll down the page until you get to frame #180.
Tinkerer, Do the seals replace come as a seal kit and where can you purchase them?
Tinkerer, In my 580B Commercial Control Valve housing my o-rings are square just like the cavity. My question is are they originally round o-rings and just conform to the square shape. The ones shown in the drawing are round. Thanks, Tim
I have never seen control valve seal kits offered by Case/ CNH. Those O rings are square. NO, Don't waste your time putting standard round profile "O" rings in those grooves. This website will explain what a square "O" ring is. -------> https://www.mcmaster.com/products/o.../square-profile-oil-resistant-buna-n-o-rings/
Thanks I ordered an assortment kit of the square profile Buna-N oil resistant o-rings and a regular Buna-No-ring asssortment hopefully this will get me going.
Keep us posted on your progress. It will help others doing the same thing.
Update 580B Case: The o-rings that fit into the cavities are actually round in shape with a square profile. I had to go to a local company that rebuilds Sawmill pumps they had all sizes of round and square o-rings. Got it all back together and no leak down on the hydraulics. Thanks