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Hydraulic pump questions

3797 Views 14 Replies 5 Participants Last post by  TUDOR
Hello all,
I have a hydraulic pump that is perfect for a fel project I am doing except it turns the wrong way. I took it apart and it seems like I can flip everything around . It has front and back plates, a center housing and a center gear cluster If I flip the center housing and gear cluster around will it pump? I am no hydraulic expert . :dunno:
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Probably too late, but you never dead head a hydraulic pump. It will build pressure until the case fails, and that takes next to no time at all. The risk of injury from high pressure oil or fractured pump parts is not to be taken lightly.

Some gear pumps are not reversible.
Bucket to bucket using an electric drill to turn the shaft. The drill will stall if the oil can't flow and that'll prevent any damage.

Pumps don't make pressure, they move fluid. They are designed to withstand the pressure created when the actuator does its work up to their pressure rating.

Pictures may help. If the manufacturers plate is still attached to the pump, or numbers are cast into the body, then you can go to the source with no guessing. From the limited view of your current pics, that pump looks to have a built in relief valve. If that is the case, it will only work in one direction.
The symbol on the end plate says that it is a unidirectional pump and the cavity design bears that out.

Contact these folk for a definitive answer. The pics may help.

Click "Contacts" at the top of the page and "USA" on the left of the next page. They may be close enough that you can take it over and talk to them in person. You can get more info in person than with an email if you talk nice-nice.
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