What was found
AT F410 DURING CRUISE FLIGHT, NOTICED AN ABRUPT VIBRATION ACCOMPANIED BY A LOUD RUMBLE. THE HYD SYNOPTIC PAGE SHOWED 2 PERCENT FLUID LEVEL ON LEFT SYSTEM. DIVERTED TO KIAD. WHEN WE SELECTED GEAR DOWN AN AMBER L HYD PRESS LOW CAS ILLUMINATED. FOLLOWED QRH AND LANDED. TOWED TO THE RAMP DUE TO NO NWS. NOTICED HYD FLUID DRIPPING FROM LT ENGINE ON POST FLIGHT. FOUND LT EDP TO HA VE OVERHEATED AND MELTED LTS GASKETS. REMOVED DAMAGED LT ENGINE DRIVEN HYDRAULIC PUMP AND INSTALLED REPAIRED UNIT IAW AMM 29-12-01. OPS AND LEAK CHECKED GOOD. DUE TO OVERHEAT, COMPLIED WITH LEFTHYD.RAUUC SYSTEM OVERHEAT CHECK IAW AMM 29-10-00. ORIG SUBMISSION DATE: 1/16/2023