Hi there - I am trying to repair some leaking seals on the hydraulic steering on a 1990 Case 580k 4WD. I've been able to remove the tie rods and remove the 3 large Hex Bolts holding the gland to the steering housing but I can't get the housing to separate...and thus can't get the rod out. I've given a few good wacks to the housing but nothing. There isn't a ton of room to swing anything too big and i don't want to damage the rod that is in the casing. I've attached picture but if anyone has any advice on how to remove the rods I'm all ears. I have the huge service manual but no where in it can i find an exploded diagram of the power steering unit or how to disassemble. Thx in advance for any help. Ron
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rdavison39
Replacing Hydraulic Steering seals on Case 580k 4WD
Hi there - I am trying to repair some leaking seals on the hydraulic steering on a 1990 Case 580k 4WD. I've been able to remove the tie rods and remove the 3 large Hex Bolts holding the gland to the steering housing but I can't get the housing to separate...and thus can't get the rod out. I've given a few good wacks to the housing but nothing. There isn't a ton of room to swing anything too big and i don't want to damage the rod that is in the casing. I've attached picture but if anyone has any advice on how to remove the rods I'm all ears. I have the huge service manual but no where in it can i find an exploded diagram of the power steering unit or how to disassemble. Thx in advance for any help. Ron
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And I guess as a follow on question - once it is separated do the rods just come out. Does anyone have an exploded parts diagram (4WD) of how this steering unit is put together ?
Thanks @Fedup. Yes, the photo above is on the left side. Right side flange ("passenger") photo is below. From what i can gather, now that the 3 large 10mm hex bolts have been removed, i have to dislodge the flange on the left side (probably with a 2x4 and a 10lb hammer), remove the tie-rods from the steering rod so i can pull the rod out of one end (pulling from the drivers side) and then once out of the cylinder, slide the left hand gland/flange (that was held on with the 3 large hex bolts) off the rod once it has been pulled out. The flange on the passenger side has much smaller hex bolts so yes hopefully easier to jar free. In my head, i'm not quite sure what the internals of this steering rod/cylinder look like and exactly what seals i need to replace - i can't find an exploded parts diagram even though i have the huge 1300 page service manual.
I also understand that the hardest part of the job is unscrewing the chrome steering rod from the tie rod - if you have any tips or experience I'm all ears....
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I also understand that the hardest part of the job is unscrewing the chrome steering rod from the tie rod - if you have any tips or experience I'm all ears....
Thanks @Fedup Ah.....good idea. So two pipe wrenches on both ball joints. So that will get one end of the rod free from whatever joint cracks first. But for the other rod/ball joint remaining how do you get that off ? Won't you still need to get a thin wrench to separate the ball joint from the chrome rod ?
Ah - got it. Makes sense. Thanks for your reply - much appreciated!
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