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Replaced bucket cylinder on JD 4475 skidsteer, worked as I…

replaced bucket cylinder on JD...
replaced bucket cylinder on JD 4475 skidsteer, worked as I moved the unit outside. sat overnight, then boom and bucket became inactive...fluid is full...drive works...appears to have no flow even at the pump...have broke fittings open to bleed air...lifted the boom and bucket up with a hoist and let them down with the foot controls but never got any fluid movement.
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Answered in 41 minutes by:
5/9/2018
Mechanic: Curtis B., Technician replied 4 years ago
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,929
Experience: Technican turned service manager with multiple lines of equipment and rental units.
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Hello! Let's see if we can work together and come to a satisfactory conclusion!

Foot controls are not locked? Drive works but not hydraulics? Th hydraulic pump is the small pump driven by the drive pumps, loosen pressure line on the hydraulic pump and see if there is oil flow. If none, slip the pump back and check the drive.

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Customer reply replied 4 years ago
with engine running not much more than a fast drip at pressure line, its a splined shaft drive, in the picture, don't think it could be bad...wouldn't it grind a lot?....
Mechanic: Curtis B., Technician replied 4 years ago

If there is no flow, it is not turning. It may not be at the pump, it drives through the other pumps.

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Customer reply replied 4 years ago
were busy with other work so I cant get to the skidsteer now...might be a couple of days....
Mechanic: Curtis B., Technician replied 4 years ago

OK>

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Customer reply replied 4 years ago
got the pump off....It drags on half of the rotation....drive pumps both worked before I took the pump off...
Mechanic: Curtis B., Technician replied 4 years ago

?? Drive does not work now? Was hydraulic pump bad?

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Customer reply replied 4 years ago
have you ever worked on a JD 4475 skidsteer?..if so...is there an easy way to get the reservoir off to make sure its not plugged at the outlet?
Mechanic: Curtis B., Technician replied 4 years ago

nO, 6675 was the ones we had. But if anything like the 6675, you can't get tanks out without removing the engine!

Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 43,929
Experience: Technican turned service manager with multiple lines of equipment and rental units.
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Satisfied Customers: 43,929
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