Hydraulics suddenly stop working

[Ccarbino]

Hi just wondering if anyone can help I have a case 580 super e that is fairly new to me that all of a sudden lost all hydrolics and steering. Not sure where to start looking for the problem.

 

[Tinkerer]

Welcome to HEF, Ccarbino !
Check the hydraulic pump shaft and see if it is turning. Part # 19 may have failed. It is on the front of the engine crankshaft.

 

[Ccarbino]

Pump shaft is turning but not very fast and not smoothly. Not sure how fast should be turning. Is #19 a part of the pump?

 

[DIYDAVE]

Looks to be a connector, could go either way. Pull the pump and see what the splines look like...

 

[Ccarbino]

Do I need to remove the weight on the front to remove the pump as I have the extended hoe?

 

[Tinkerer]

Yes remove the counterweight.
From the service manual --->

 

[boaterri]

A seemingly stupid suggestion but have you checked the hydraulic oil level? Don't ask how I come to offer this suggestion........

Rick

 

[Ccarbino]

Hydraulic oil level is good. Looks like the mounting cover is broken on the pump and case stated they do not sell this. also looks like the gear is worn all the teeth gone on the pump.

 

[Tinkerer]

Time for a new pump and hub.
Something such as severe engine vibration caused the pump cover to break.
I am guessing you meant the flange on it where it bolts to the mount.
It would also be a good time to replace the engine mount rubber bushings. #4 on the front and there are rear ones also.
Be sure to check the bolts where the front mount, bolts (#5) to the engine for proper tightness.

 

[Ccarbino]

Just changed the motor mounts a few weeks ago and the shuttle shift. Yes where it bolts, doesn't look like case sells that piece. It's cast so not sure if my guy can weld it, if so i just need to replace the shaft. Otherwise looks like a new pump.

 

[Tinkerer]

I wouldn't bother bother welding it.
A new input shaft and the seal for it will be about $200.00 plus the coupler.
If the weld breaks you will be buying a new pump and coupler anyway.
That is my opinion for what it's worth. =$0.00

 

[Ccarbino]

Case quoted me part number n6888 $514 before taxes Canadian and case showed n6885 but does not sell it. Also coupler d140524 at $86.80 without the rubber mounts. I like your price better lol. I did find a used pump for 485.00.
Thanks for all your help greatly appreciated.

 

[Ronsii]

The last case 580 I did with the stripped splines case had discontinued the pump but offered a slightly different replacement pump... could be the same with parts for the pump you have.

 

[Ccarbino]

After market pump case stated 1281.00 plus tax for the pump.

 

[DIYDAVE]

I'd try to find out the specs of the hyd system, flow GPM, and pressure PSI. Then measure the mount, and go to surpluscenter.com, you never know, there, sometimes they have an exact fit...

 

[Ccarbino]

Question when I put the pump back in do I have to bleed the system? I did not drain I just plugged. And if so do u know how?

 

[DIYDAVE]

Most hyd pumps self prime, self bleed. You might want to take this opportunity to pull the suction screen, and see if there is anything gumming it up. If there is, certainly change the fluid. if not, and I just dripped a grand on a new pump, I'd still put new fluid in it...

 

[Ccarbino]

Where is this suction screen? I found a used pump for less than 500 come from a newer machine but will fit.

 

[DIYDAVE]

Follow the suction line, from the pump to the reservoir, screen is in reservoir, most of the time. When all else fails, check the manual...

 

[mikebramel]

No way I'd pay 500 for a used gear pump. You can get a permco for near that price brand new