hatch789
Bronze Member
I have a (new to me) case 580C Backhoe / Loader Serial Number: 8984780
Several questions for you guys as I rebuild stuff that was abused or broken on my new baby.


1. My power steering cap does not have a dipstick on it. To buy a new one just for the dipstick is crazy. I will have to make a little tool and go fishing for it, but in the meantime if someone could please measure theirs for me and tell me at what length the marks are on the dipstick; I would be most grateful. With the information I'm hoping someone can give me, I can make a dipstick for myself if mine is truly gone and not just loose in the reservoir.
2. My power shuttle button on the floor is not working. It won't press. I assume this is OK until I get a chance to fix it. My tractor moves properly with the hydrostatic drive handle on the left of the steering wheel, so this button would only really be needed if I was traveling on the road or something and wanted to shift gears while moving. At least that's my understanding. So if you guys could confirm that it's OK to leave this item go for now that's great.
3. I don't appear to have any Diff button or switch near my gas peddle. Did some models just not have one of these? If I did have a button and it's gone now, can I tell which "mode" my tractor is in right now? Like if I lift the back tires off the ground and try spinning one tire by hand will the other go the same way if it's in DIFF mode "ON"? I will try to remember to do this test tonight. Also is it bad to leave it in a certain mode for extended use?
4. I have rust (yes rust) flaking off of the inside of my fuel tank spout. This thing must have sat around for quite some time without being stored properly. The rust isn't too bad and I'm hoping it's just up on the neck of the gas tank and not all over inside on the walls where it had condensation over the years. I was going to take a "narrow space cleaner" nozzle and carefully suck the loose flakes off of the inside of the neck but there's no good way I know of to get the loose rust flakes out of the tank. My only thoughts were to fill the tank and siphon it out filtering it repeatedly to try to remove as much as possible. Thoughts or suggestions here are welcome.
5. If you look at my 3rd pic you will see that the backhoe bucket is set up right now with the link pin in what I believe to be the more "powerful" digging position (the lower hole). Am I right in this assumption that the lower hole will provide less swing radius of the bucket but be the more powerful setting? If I swap it to the upper pin position I should be able to nearly close the bucket against the dipper arm but I believe it would then be less powerful for digging and break-out force. If someone can clarify this for me I would appreciate it.
I'm sure I'll have a lot more questions as I rebuild my new baby. So I will post here as I go along. My first task is replacing the master cylinders. They are both shot and I have ZERO brakes. No emergency break either. So I have to fix that after the hydraulic brakes are fixed.
Several questions for you guys as I rebuild stuff that was abused or broken on my new baby.



1. My power steering cap does not have a dipstick on it. To buy a new one just for the dipstick is crazy. I will have to make a little tool and go fishing for it, but in the meantime if someone could please measure theirs for me and tell me at what length the marks are on the dipstick; I would be most grateful. With the information I'm hoping someone can give me, I can make a dipstick for myself if mine is truly gone and not just loose in the reservoir.
2. My power shuttle button on the floor is not working. It won't press. I assume this is OK until I get a chance to fix it. My tractor moves properly with the hydrostatic drive handle on the left of the steering wheel, so this button would only really be needed if I was traveling on the road or something and wanted to shift gears while moving. At least that's my understanding. So if you guys could confirm that it's OK to leave this item go for now that's great.
3. I don't appear to have any Diff button or switch near my gas peddle. Did some models just not have one of these? If I did have a button and it's gone now, can I tell which "mode" my tractor is in right now? Like if I lift the back tires off the ground and try spinning one tire by hand will the other go the same way if it's in DIFF mode "ON"? I will try to remember to do this test tonight. Also is it bad to leave it in a certain mode for extended use?
4. I have rust (yes rust) flaking off of the inside of my fuel tank spout. This thing must have sat around for quite some time without being stored properly. The rust isn't too bad and I'm hoping it's just up on the neck of the gas tank and not all over inside on the walls where it had condensation over the years. I was going to take a "narrow space cleaner" nozzle and carefully suck the loose flakes off of the inside of the neck but there's no good way I know of to get the loose rust flakes out of the tank. My only thoughts were to fill the tank and siphon it out filtering it repeatedly to try to remove as much as possible. Thoughts or suggestions here are welcome.
5. If you look at my 3rd pic you will see that the backhoe bucket is set up right now with the link pin in what I believe to be the more "powerful" digging position (the lower hole). Am I right in this assumption that the lower hole will provide less swing radius of the bucket but be the more powerful setting? If I swap it to the upper pin position I should be able to nearly close the bucket against the dipper arm but I believe it would then be less powerful for digging and break-out force. If someone can clarify this for me I would appreciate it.
I'm sure I'll have a lot more questions as I rebuild my new baby. So I will post here as I go along. My first task is replacing the master cylinders. They are both shot and I have ZERO brakes. No emergency break either. So I have to fix that after the hydraulic brakes are fixed.