InsaneHydraulics - Sergiy Sydorenko © 2009-2012 All Ridghts Reserved
Take a good look at these parts - this Parker P2075 pump's entrails got
mashed to bits and pieces, and, apparently, the pump rotated for quite a
long time with them inside! The barrel, the swashplate, even the body - they all got marked and pitted by the metal scraps and chunks, and yet the shaft bearing
came out almost intact! The picture is not of the best quality,
and I should've cleaned the bearing to capture its real condition - but
take my word for it - it looked almost new! The dots you see on the
picture are actually tiny oil drops I should have wiped off...
I can think of two things to explain this - either the oil
flow in the shaft bearing area is very low during the operation, or the
pump's casing wasn't filled with enough oil when the "mashing" occurred.
I hope I will get a chance to inspect the machine and come to a final
conclusion. Be that as it may, it is still quite strange to find a
completely destroyed pump with an undamaged shaft bearing, that is
lodged in an open to case cavity and is lubricated by the case oil.