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So, I bought my first hoe...Case 580b. It needs work but overall still has some life left in it. I have the service manual.
The loader won't go up or down. All other hydraulics work fine. If I roll the bucket down and then pull the lift lever and then roll the bucket up, the lift cylinders will hold the arms up. If I then try to lift, the bucket drops. If I engage the lift spool and try to operate the backhoe, it won't, so the lift spool is stopping the power beyond flow through.
If I get the lever in just the right spot...first to the bucket roll then over into lift, the bucket will lift. Somehow it seems like the lift spool is blocking the power beyond circuit, as it should, but is not energizing the parallel passage. The tilt spool energizes parrallel passage and I can power the lift from that if I try to use both at the same time.
It looks like disassembling the loader control valve isn't too big of a job, but I don't want to if that's not where I should start. Are there rebuild kits available for these?
If anyone could offer any advice, sure could use it, thanks.
So, I bought my first hoe...Case 580b. It needs work but overall still has some life left in it. I have the service manual.
The loader won't go up or down. All other hydraulics work fine. If I roll the bucket down and then pull the lift lever and then roll the bucket up, the lift cylinders will hold the arms up. If I then try to lift, the bucket drops. If I engage the lift spool and try to operate the backhoe, it won't, so the lift spool is stopping the power beyond flow through.
If I get the lever in just the right spot...first to the bucket roll then over into lift, the bucket will lift. Somehow it seems like the lift spool is blocking the power beyond circuit, as it should, but is not energizing the parallel passage. The tilt spool energizes parrallel passage and I can power the lift from that if I try to use both at the same time.
It looks like disassembling the loader control valve isn't too big of a job, but I don't want to if that's not where I should start. Are there rebuild kits available for these?
If anyone could offer any advice, sure could use it, thanks.