I have a hitachi ex 100-3 that seems to get slow after it warms up if I'm coming out of a hole and start to swing or jib my main boom will stop I can hardly run two functions at a time I had the hyd pimp rebuilt and a new pilot pump put in it this spring but still does same thing all the sensors on the pump have been replaced when pump was put on what could b causing this problem
Ex 100-3 gets slow after warming up
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