As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHL - FLT 1268 - EN ROUTE PHL-SJU, CREW RECEIVED THE EICAS MESSAGE L PRIM HYD OVERHEAT' AND THE ASSOCIATED 'OVHT' LIGHT. CREW DEACTIVATED THE PUMP AND THE LIGHT EXTINGUISHED. FLIGHT RETURNED TO PHL AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REPLACED THE LEFT ENGINE DRIVEN PUMP. (M)