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Looks to me like debris and then running low on fluid generating heat and getting some of the cover material buildup on the trailing edge of the vanes.View attachment 3171526
View attachment 3171529Anyone familiar enough with hydraulics to confirm this is cavitation damage? The pump also failed and it looks like there was some adhesion of the rotor to the vanes. Not sure if correlated.
Definitely not low on fluid. This thing doesn't see a lot of miles so maybe 3000 miles ago? The reservoir doesn't have a filter though, so I do wonder if dirt ended up getting in there and screwing it up. Still, fluid looked pretty clean.Looks to me like debris and then running low on fluid generating heat and getting some of the cover material buildup on the trailing edge of the vanes.
It only take a small amount of debris to score a pump surface like that.
When was the last time the system had been flushed?
If it doesn't see a lot of miles, then could it be moisture in it, then boiling off from heat and that's what causing the contamination?Definitely not low on fluid. This thing doesn't see a lot of miles so maybe 3000 miles ago? The reservoir doesn't have a filter though, so I do wonder if dirt ended up getting in there and screwing it up. Still, fluid looked pretty clean.
I ask about cavitation because while it wasn't whining, I do wonder if the pump is starving for fluid at high rpm and poppin off and creating adhesion. If that's the problem then adding an inline filter on the return won't be any better
Possible, for sure. Just ensuring I don't fix the wrong problem. this aftermarket reservoir probably starves the pumpWhy do you think it's Cavitation, not debris caught in the vanes?
Would only take a small bit of damage from debris to create an irregularity in the surface that then picks up metal from vanes, or housing, or visa versa.
Original. Never been touched. Per @richardlillard1 conclusion I ordered a new pump but don't want it to fry again tooPretty sure the OP is running hydro assist, and possibly a high-volume aftermarket reservoir, all of which is probably germane to the conversation.
As asked before, how old is the pump? OEM, aftermarket, rebuild?
ThanksDoesn't look like cavitation to me.
Cavitation is the formation of bubbles in a vacuum. Its a micro explosion that blows off particles of material in rounded little craters.
That looks like debris damage.
Yeah it stays low. Like 100 degrees. I have some Hayden trans cooler for itDo you monitor ps fluid temps? What kind of cooler you have?