Re: Super A hydraulic pump HELP

Posted by Janicholson on December 03, 2006 at 16:52:30 from (66.173.50.104):

In Reply to: Super A hydraulic pump HELP posted by GRB54 on December 03, 2006 at 16:25:01:

Not bad at all.
There are (probably) two styles of pump. An "O"ring seal, and a traditional shell seal type.
They are both replaceable.
The shaft clearance needs to be checked to be sure the bushing in the end frame of the pump is good. If it is egged out it needs to be rebuilt with a new bushing. If good, the next item is to see if there is a wear groove from the seal or oring in the shaft. If you can feel it with your fingernail, it needs to be repaired with a speedy sleeve if it is an "O"ring seal. The speedy sleeve is pressed onto the shaft creating a slightly larger diameter than original. The end frame housing may need to be enlarged to allow it to be installed. this may include the use of a larger "O"ring.and the deepening of the "O"ring groove. Not a real problem for a hydraulic shop. If it is a traditional seal, the speedy sleeve is a possibility without much housing problem. The seal should be sized to match the speedy sleeve OD.
If a traditional seal is used w/o speedy sleeve, placing it in a position that is deeper, or more shallow so that the lip hits an unworn spot on the shaft is workable. If not, using a seal with similar OD and thickness, but a .005" smaller shaft spec. will probably work in the worn groove. Put a finger of petroleum jelly behind the seal and on the shaft when assembling to lube it on first rotation. Good luck, JimN

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