Case CK 580 clutch issues

Scott321 · Aug 6, 2017

I just bought a 1970 Case CK 580 diesel. I've only had it a few weeks, and just been using the backhoe. The clutch pressure was always in the green until yesterday, now it's only half pressure. I can't put it in gear, as it grinds, so it's sitting on the edge of my field. I was using the bucket, and trying to scoop up some of the loose fill from digging with the backhoe when I first noticed the pressure.

Any ideas? I'm not a mechanic, but can do the basics, and have a mechanic i trust.

Thank you,

Scott

P.S. I have other questions, but this is the most pressing.

kevinthefixer · Aug 6, 2017

Well, the basics is always the place to start. How is the hydraulic fluid? Level, color, etc.? When was the last filter change, or oil change for that matter? Do you have a service manual for it, if so what's in the troubleshooting section? Owner's manual even? Mechanic or no, I recommend you invest in Owner/operator's, Service, and Parts manuals, eventually you'll need them.

caterpillar guy · Aug 7, 2017

It is slow but use the hoe to push it up to the shed lot easier to work on and not in the mud if it rains.

Scott321 · Aug 7, 2017

Hi Caterpillar Guy, I think you commented on the wrong post.

Scott

Scott321 · Aug 7, 2017

(quoted from post at 05:43:23 08/07/17) It is slow but use the hoe to push it up to the shed lot easier to work on and not in the mud if it rains.

Whoops - I see what you meant now. I'm slow in the AM! Also, I need a shed, right now I have a tarp.

Scott

Scott321 · Aug 8, 2017

(quoted from post at 18:10:24 08/06/17) Well, the basics is always the place to start. How is the hydraulic fluid? Level, color, etc.? When was the last filter change, or oil change for that matter? Do you have a service manual for it, if so what's in the troubleshooting section? Owner's manual even? Mechanic or no, I recommend you invest in Owner/operator's, Service, and Parts manuals, eventually you'll need them.

I poured five gallons of hydraulic fluid into the reservoir. The overflow was coffee colored, fading to cream, does this mean water in the hydraulics? Should I drain the whole system and start over, or try to drain it off the sump? The tractor had sat for two days when I topped the hydraulic fluid.

All of the other fluids (transmission, torque converter, power steering, and engine oil) were at the proper levels, according to their dipsticks. Hit all the quick connections I could see with a grease gun.

I've got the owner's manual, and will see my garage man in the morning for filters. The previous owner didn't have any fluid change information for me, and the electrical system was gutted years ago, so the hour meter stopped at 6500 hours.

Scott

Scott321 · Aug 8, 2017

Anyone know a good source to buy and download the service manuals?

Thank you,

Scott

Scott321 · Aug 9, 2017

I've topped and checked all the fluids, the torque converter dipstick had fluid up to a mark on it, I'm assuming that's the full mark.

The tractor will start, and go in gear, but then it won't move.

The clutch pressure is still low.

I was going to take the torque converter filter into my local garage for a replacement, but the bolts are very tight. I'm applying WD-40 to the bolts (only thing I have on hand), and will try again this evening.

Scott

Case CK 580 clutch issues

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