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Case 580 CK tractor backhoe clutch slippage


 
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kc10ken
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PostPosted: Thu Aug 30, 2007 4:48 pm    Post subject: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

I'm new to this forum so go easy on me guys. I'm the proud owner of a 1974 Case 580 CK backhoe. She's old, she's ugly but she runs great.

Lately I've noticed that if I don't warm her up for at least 15-20 minutes, she won't move. The clutch doesn't engage until she's warm.

Is there any adjustment I can make so she would grab faster? Once she does grab, she's OK from then on.
 
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JIM IL
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PostPosted: Fri Aug 31, 2007 2:29 am    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote


Have you changed your hydraulic oil filter? With standard clutch it's on the left hand side of engine.
 
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kc10ken
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PostPosted: Fri Aug 31, 2007 3:01 am    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

I HAVE changed the hydraulic filter...about a year ago. I don't use her often so she sits for long periods without being used. The hyraulic filter is located on the right side just in front of the controls for the front loader.

I don't think it has a standard clutch, I think it's what they call a "hydrostatic" clutch.
 
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JIM IL
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PostPosted: Fri Aug 31, 2007 3:41 am    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote


You have the hydrostat if the filter's on the right. You also have another torque converter filter in this system... behind the radiator grill on left (port) side of tractor, down low. It is about the same as the other one. Does your fluid in hydralic reservoir look foamy...foam = moisture and if it gets moisture in it, it can slow things down. do you know what flud is in system? Tranny takes 90 wt. but the torque converter/hydraulics take Case TCH or equivalent hyd fluid.
 
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Roger (Mi)
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PostPosted: Fri Aug 31, 2007 6:58 am    Post subject: Don't confuse hydrostatic with power shuttle Reply to specific post Reply with quote

The hydrostatic drive has two small pedals on the floor with forward and backward arrows. There is NO gear shifter. The power shuttle uses the left lever on the steering post to select the forward or backward directions. The power shuttle will have a gear shifter. Is it hydrostatic or power shuttle?
 
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kc10ken
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PostPosted: Sat Sep 01, 2007 7:17 am    Post subject: Re: Don't confuse hydrostatic with power shuttle Reply to specific post Reply with quote

DEFINITELY power shuttle.

Could a low hydraulic fluid level cause clutch slippage especially when cold?
 
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Roger (Mi)
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PostPosted: Sat Sep 01, 2007 9:30 am    Post subject: Power shuttle trouble Reply to specific post Reply with quote

When trouble shooting any problem, start with the simple things first. Example: If an alternator is not charging, check the alternator drive belt first. Also, you are well advised to purchase a “Service Manual” from a Case Industrial dealer. While it is not cheap, the trouble shooting guides and illustrations make it worth every dollar.

There are two types of power shuttle drives used by Case for the 580, Twin Disc and Rockford. Trouble shooting both are basically the same.

With clean oil, filters, proper oil level, and clutches are NOT transmitting full power:

1) Lubrication valve stuck open a. contamination or wear in spool area causing hang up.
b. regulating valve spring broken or improper tension.
c. poor register between clutch hub and piston carrier.
2) Clutch dump valve stuck open a. contamination or wear in spool area causing hang up.
b. regulating valve spring broken or improper tension.
3) Low oil pressure a. worn out or malfunctioning oil pump.
(180 psi engagement) b. clutch pressure regulating valve out of adjustment
(40 psi lubrication)
4) Piston outer sealing rings scored or wedged in piston grooves – oil contamination.
5) Oil pressure NOT being applied to the whole piston area – contamination in the
oil transfer orifice holes between the primary and secondary clutch piston areas.
6) Opposing clutch NOT dis-engaging when shifting to the other – opposing dump valve
and lubrication valve stuck closed.

The converter and lubrication oil regulator valve is located near the center of the torque tube cover and is held to the cover by two bolts. The converter oil temperature sensor is also located on that regulator valve. The valve spool is in that small casting behind a snap ring and retaining plug. The spool MUST move smoothly in the bore. The valve spring (uncompressed) should measure 1.375” and have 10-12 lbs. pressure at a .75” (compressed) height.

The clutch pressure regulator valve is located between the two spools on the control valve body. The regulator valve spool is behind a screw-in plug with shims to adjust the clutch pressure. The spool MUST move smoothly in the bore. The (uncompressed) length of the clutch pressure spring should be 2.04” and have 45 lbs. at 1.344” (compressed) height. The clutch pressure should be at or near 180 psi. There is an oil pressure test port (pipe plug) located on top of the control valve. Adding a .0209 shim will increase pressure by 5 psi. A .0418 shim will increase pressure by 10 psi. Likewise, the removal of a shim of each specific size will reduce pressure by the stated amount.

You should now have enough information to find the cause of the problem. If not, give me another shout. Good luck.
 
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Jim B
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PostPosted: Sat Sep 01, 2007 8:56 pm    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

The 580CK Power Shuttle oil filter is mounted behind the grille, in front of the radiator. The oil source is the TCH in the torque tube. Dipstick is welded to the underside of the hex head plug just in front of the floor shift lever. This oil pump and oil supply feeds the Torque Converter and Power Shuttle clutches.
The pump is mounted high in the case and has a vertical pickup tube with a screen wrapped around the bottom end. This screen often get restricted with debris and slows initial draw into the pump. After pressure builds the GPM of oil is not large. This screen may be your culprut.

The 580CK's did not ever have a hydrostatic transmission.

The filter located on the loader frame just in front of the loader controls is for the totally independent Loader-Backhoe system. Hydraulic oil is used for this system. L-B pump is crankshaft driven at the front. This pump is mounted under the radiator. Changing this oil and filter will have no effect on the Power Shuttle - Torque Converter.
 
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dave in pa.
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PostPosted: Sun Sep 02, 2007 8:11 pm    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

Try not to get to carried away at first with this,I have a 680e and had the same type of problems.I would suggest draining the fluid and cleaning the screen out,on my 680e it calls out for TCH FLUID FOR THE HYDRAULIC AND POWER SHUTTLE FLUIDS,and 90weight for the 4 speed and rearend.If changing the fluid seems to costly,I'll tell you I put nearly 1600 dollars towards repairing mine when it came apart,even after it was rebuilt there were minor issues to be worked out ,those shuttles can be a real bear.I have the manuals for a 680 if its any help let me know and I can send you info. good luck
 
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bob farrell
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PostPosted: Mon Sep 03, 2007 12:23 pm    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

I have a 580C. Don't know much about it. What is the difference between a 580C and a 580CK and what year(s) was the 580c made? Thanks! Bob
 
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kc10ken
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PostPosted: Tue Sep 04, 2007 9:20 am    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

I don't know what the difference is between the 580C and the 580CK, I just know that mine is a 1974 Case 580CK...identified by the ID plate.
 
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kc10ken
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PostPosted: Tue Sep 04, 2007 9:23 am    Post subject: Re: Case 580 CK tractor backhoe clutch slippage Reply to specific post Reply with quote

Thanks for the info! I'll break out the service manuals and change that filter. I had no idea that the torque converter and the power shuttle were fed from a seperate oil supply....I thought it was a common system that shared the hydraulic oil with the backhoe components.

THANKS!
 
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kc10ken
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PostPosted: Tue Sep 04, 2007 9:27 am    Post subject: Re: Power shuttle trouble Reply to specific post Reply with quote

THANKS! Excellent info. I have a set of service manuals so I'll take you're advice and start checking the simple things first.

THANKS!
 
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