What was found
(WS9R) PUSH ROD RETAINING SPRING BROKE DURING ENGINE TEST CELL RUN. OBSERVED THAT THE PUSH ROD TUBE SEALS BEGAN LEAKING OIL, UPON REMOVAL OF THE ROCKER COVERS, DISCOVERED THAT (3) OUT OF (4) RETAINING SPRINGS WERE BROKEN. VERIFIED THAT THEY WERE INSTALLED CORRECTLY IAW THE O/H MANUAL. REPLACED ALL RETAINING SPRINGS, COMPLETED TEST CELL RUN WITH NO OTHER PROBLEMS.