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Allis Chalmers Discussion Forum

WD slow hydraulics

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01-03-2008 18:17:38

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i have a WD and the hydraulics on both the remote cylinder and the snap coupler lift operate very slow almost like it is low on oil or has air in the system. anyone here know any reason why they work slow and not so smooth? it was like this during the heat of summer and the cold of winter. the oil level is as it should be with the recommended weight of oil. thanks for the help.

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01-04-2008 10:16:47

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 Re: WD slow hydraulics in reply to TravisB, 01-03-2008 18:17:38  
The pump on your tractor has four pistons that run on a lobed shaft much like a cam shaft. If one or more of the pistons are stuck or not pumping for some reason it will act like you describe.

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01-04-2008 09:10:46

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 Re: WD slow hydraulics in reply to TravisB, 01-03-2008 18:17:38  
Travis, check the travel of the linkage from the quadrant to the pump. If you don't have full travel, the result will be as you explained. Raise the lever and then grab the rod and see if you can raise is some more. Tom

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01-04-2008 05:31:52

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 Re: WD slow hydraulics in reply to TravisB, 01-03-2008 18:17:38  
im not sure. i'll have to get the book out and look and see. thanks for the advice.

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Jack a

01-04-2008 03:32:30

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 Re: WD slow hydraulics in reply to TravisB, 01-03-2008 18:17:38  
Is the rate of flow screw adjusted out correctly?

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