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Re: hydrualic pump cavitates
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Posted by Bob Clark on September 12, 2002 at 18:51:24 from (24.154.153.13):
In Reply to: hydrualic pump cavitates posted by mike on September 09, 2002 at 22:07:32:
It's very likely that the cumulative vibration and stress caused the gear to break even after you removed the screen. Also after you removed the screen a small particle might have caused the breakage (your talking about micron clearances). Either way you have to find the root cause of your problem or you'll just break another pump. A suction "screen" should not cause cavitation in a well designed system unless their is contamination or the viscosity of the oil is wrong. About engine speed, it depends on the application, but as a for instance the early Case skid loaders (the ones Case designed, after the original "Uni-Loaders") particularly the 1830's were only to be ran at idle or full throttle because the charge section of the pump had a different performance curve than the the piston (driving) section. Running half speed would cook a pump quicker than anything. Don't know if this helps but maybe it will give you some food for thought.
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