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  1. T

    Case 580B 2 piece to 1 piece cylinder

    Hi, after getting the rod out of the boom cylinder on my 1973 Case 580b, I noticed that the piston was in pretty bad shape (perhaps the bolt came loose, I don't know). Saw a piston advertised for $98.00 on HWPartstore's website and ordered it. Came very quickly, but to my surprise, it was a 1...
  2. T

    New hydraulic fluid

    Hi, finally got all of the leaks stopped and now would like to drain out the old hydraulic fluid and replace with new! Would someone on here walk me through the steps I need to take in order to accomplish this? Thanks! I have a 73 580b.
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    split washers

    Hi, does anyone know where I can get the split washers that go next to the o ring on a 580b swivel joint? Thanks!
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    7.50x16 tires on front!

    Hi, I was just wondering if a 10 ply 7.50x16 trailer tire that I currently have on a gooseneck trailer (currently in a state of disrepair) would work as a replacement for the front tires on my Case 580b? The tires that are on the backhoe are so old that I can barely make out the size; but I...
  5. T

    Swivel joint on 580b

    HI, I need to replace a couple of o-rings on the two swivel joints on my 580b. I am new to hydraulics and was wondering if pressure needs to be released before the hoses are disconnected? If so, how would I go about doing this? Thanks!
  6. T

    relief valve, breather?

    Hi, can anyone identify this?
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    Case 580b hydraulic filter change.

    Hi all, before completing the repacking of the loader cylinders, I replaced the hydraulic filter. In taking the old filter out, I noticed the "hole" in the filter was facing down, so I put the new filter in the same way! I just dropped the new filter in, poured in some hydraulic fluid and...
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    Loader lift cylinder kit/Case 580b

    Hi, received my parts for the cylinder re-packing and am a little confused. The piston rebuild is pretty straightforward, however packing the gland is confusing me due to the old seals in the gland being unrecognizable and no instructions coming with my new parts. By the way, I am working on a...
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    Case 580b transmission filter o ring

    HI everyone, I am just about to change the transmission fluid and filter in my 580b. I received the new filter but there was no o ring! Does the filter housing have or require an o ring? If so, would anyone know the part number? Thanks!
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    Seal Kit

    HI, I am in need of a loader lift seal kit for my 580b and don't know who to buy from! I can get one from $35.00 to $129.00 but I don't want to buy a piece of junk! Can anyone on here recommend a reputable supplier? Thanks!
  11. T

    Case 580b

    Hi everyone, I am new to the backhoe world and have just bought a 1975 Case 580b. I want to put new fluids in her and it's pretty obvious where to put the gear oil and motor oil. But my question is: is the hydraulic fluid and transmission fluid the same thing? Or does the transmission fluid pour...
  12. T

    Case 580b backhoe

    Hi everyone, I am new to the backhoe world and have just bought a 1975 Case 580b. I want to put new fluids in her and it's pretty obvious where to put the gear oil and motor oil. But my question is: is the hydraulic fluid and transmission fluid the same thing? Or does the transmission fluid pour...
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