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CASE 580D STERRING PROBLEM

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george dugan

06-20-2011 11:01:37




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Steering quit working so we put a new hand pump on the drive shaft on it.Then we changed steering cylinders on it.New hydraulic filter.Now I am be told it is the relief valve or a unloader valve.The front and rear hydraulics work fine.Also we took out about 12 gallon of oil and it will only take 5 and the tank is full to the top.We worked the bucket and rams everything works good but no steering and it needs to bleed the air out.

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mEl

06-21-2011 16:34:02




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 Re: CASE 580D STERRING PROBLEM in reply to george dugan, 06-20-2011 11:01:37  

george dugan said: (quoted from post at 11:01:37 06/20/11) Steering quit working so we put a new hand pump on the drive shaft on it.Then we changed steering cylinders on it.New hydraulic filter.Now I am be told it is the relief valve or a unloader valve.The front and rear hydraulics work fine.Also we took out about 12 gallon of oil and it will only take 5 and the tank is full to the top.We worked the bucket and rams everything works good but no steering and it needs to bleed the air out.


The D series hoe and loader uses the main hyd system pump for steering and has a relief valve in line up near the floorboard to control system pressure. it is not supplied like earlier models with a gear pump driven from the Cam gear. It is a different animal and maybe you should try to get a service manual for a D, one from and E should work also, Just seems like yolu are throwing parts at it without a diagnosis and that gets costly. mEl
This post was edited by mEl at 16:36:04 06/21/11.

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David Lohf

06-21-2011 13:43:43




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 Re: CASE 580D STERRING PROBLEM in reply to george dugan, 06-20-2011 11:01:37  
On A 580C the pump and reservoir are together driven by belt off the right front of motor.You might have an oil leak or no belt. By the way it takes A type. David



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old

06-20-2011 12:37:19




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 Re: CASE 580D STERRING PROBLEM in reply to george dugan, 06-20-2011 11:01:37  
Can not say for sure but I do know on the 560B the steering is run off its own belt driven pump but ya on the D they could have changed it. Yep never have liked any thing with hyd steering on it because if something goes wrong you can have a major steering problem



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old

06-20-2011 12:33:40




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 Re: CASE 580D STERRING PROBLEM in reply to george dugan, 06-20-2011 11:01:37  
Can not say for sure but I do know on the 560B the steering is run off its own belt driven pump but ya on the D they could have changed it. Yep never have liked any thing with hyd steering on it because if something goes wrong you can have a major steering problem



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